Find our large collection of Statistics step-by-step solutions available
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[Solution] Drilling down beneath a lake in Alaska yields chemical evidence of past changes in climate. Biologic #18753
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[Solution] Runners are concerned about their form when racing. One measure of form is the stride rate, the numb #18754
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(See Solution) A. typical hour of prime-time television shows three to live violent acts. Lin king fancily intervie #18755
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[Solution] Several large observational studies suggested that women who take hormones such as estrogen after me #18756
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[Solved] An ultramarathon, as you might guess, is a footrace longer than the 26.2 miles of a marathon. Runner #18757
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[Solution] A large observational study used records from Canada's national health care system to compare the ef #18758
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[Solution] Solve the following CPM/PERT Network Analysis problem: Given the following network and activity time #18762
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[Solution] Bring to mind a real-world situation or problem that could be addressed using an independent- or r #18763
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(Solved) When appropriate, be sure to support your postings and responses with specific references to the rea #18764
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(Solved) What are the data requirements of ANOVA (Hint, DV and IV)? #18765
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[Solution] What are the assumptions of ANOVA? #18766
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[Solved] What test tests for equal variances? #18767
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[Solved] Which are the most conservative and least conservative post hoc tests. What do I mean by conservativ #18768
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[Solved] Which post hoc tests should be interpreted when the equal variances can not be assumed? #18769
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Solution: What is the effect size that must be reported with ANOVA. #18770
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[Solved] Week 10 discussion: To prepare for this Discussion: ? Think about how correlation is often miscast #18771
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[Solution] What are the assumptions of Pearson's correlation? There are at least 4. #18772
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(See Solution) What is homoscedasticity? What is it important in regression analysis? #18773
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(See Solution) What were Karl Pearson (KP) contributions to statistics? #18774
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(See Solution) Who was Charles Spearman, what was his contributions to statistics and psychology? #18775
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(See Solution) What is the standard error of estimate, aka the standard error of measurement, in psychometric appli #18776
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[Solved] What is the difference between B (beta) and b? #18777
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[Solution] How do you know that a correlation coefficient is significant. That is, in the true populations the #18778
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(See Solution) What are the difference between Pearson’s r and Spearman’s r? #18779
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(Solved) Why would you use Spearman’s r (rho) rather than Pearson’s r? #18780
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(See Solution) What is the intercept? #18781
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(See Solution) In simple regression , what is the equation for predicting Y from X? #18782
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[Solved] Bring to mind a real-world situation or problem that could be addressed using a one-way analysis of #18783
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[Solution] To prepare for this Discussion: ? Bring to mind a real-world situation or problem that could be add #18784
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(See Solution) Post by Day 4 the real-world situation or problem you selected to address; the independent and depen #18785
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[Solution] Please explain what it means to standardize a measure, and give an example of a standardized measure #18786
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[Solution] Please define independent variable and a dependent variable. #18787
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[Solved] Why are age, anxiety, depression, education, gender, IQ, SAT-Scores, depression, not examples of ind #18788
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[Solved] In what context does an independent variable occur? #18789
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[Solved] What is a quasi experiment #18790
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(Solved) what is a non-equivalent control group #18791
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[Solved] Please explain what it means to standardize a measure, and give an example of a standardized measure #18792
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[Solved] What are the assumption of t-tests? #18793
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(See Solution) What is Levene's test? #18794
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(Solved) What statistic is used in Levene's test. #18795
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[Solved] Research shows that approximately 50% of incoming Community College freshmen require remediation in #18796
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Solution: This week, you are asked to calculate a Pearson correlation in SPSS. ? Review the Week 10 Study Not #18797
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[Solved] For a population with a mean of µ=100 and a standard deviation of σ =10, a. Find the Z-score #18798
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(Solved) Which of the following exam scores should lead to the better grade: (a) A Score of X = 55 on a exam #18799
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[Solution] A distribution with a mean of µ=38 and a standard deviation of ð=20 is being transformed into a stan #18800
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[Solution] A kindergarten class consists of 14 boys and 11 girls. If the teacher selects children from the clas #18801
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Solution: For a normal distribution, identify the z-score location that would separate the distribution into t #18803
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Solution: For a normal distribution, find the z-score values that separate a. The middle 60% of the distributi #18804
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[Solution] A normal distribution has a mean of μ =80 and a standard deviation o σ =10. For each of the #18805
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[Solution] Explain why it would NOT be reasonable to use estimation after hypothesis test for which the decisio #18806
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[Solution] A researcher has constructed an 80% confidence interval of u=45 + 8 , using a sample of n=25 scores. #18807
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Solution: A study described by Harlow (1959) in which monkeys were placed in cages with two artificial mothers #18808
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[Solved] There is some evidence suggesting that you are likely to improve your test score if you rethink and #18809
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[Solved] Explain why you should use Anova instead of several t tests to evaluate mean differences when an exp #18810
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(Solved) The following data were obtained in a syudy using three seperate samples to compare three different #18811
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[Solved] A researcher reports an F ratio with df = 2, 24 for an independent measures research study. a. How #18812
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(Solved) A developmental psychologist is examining the development of lnguage skills from age 2 to age 5. Fou #18813
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Solution: One possible explanation for why some birds migrate and others maintain year round residency in a si #18814
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(Solved) To prepare for this Discussion: ? Imagine that you are a researcher who has collected data from 5,0 #18815
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(Solved) A researcher is investigation the effectiveness of a new study-skills training program for elementar #18818
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[Solved] State College is evaluation a new English composition course for freshman. A random sample of n= 25 #18819
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[Solution] A sample of n=16 individuals is selected from a normal population with a mean of μ =48 and a stan #18820
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[Solution] Describe what is measured by the estimated standard error in the bottom of the independent measures #18823
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[Solved] In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask a #18824
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[Solved] Steven Schmidt(1994) conducted a series of experiments examining the effects of humor on memory. In #18825
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[Solved] A researcher conducts an independent measures research study and obtains t=2.070 with df=28. a. How #18826
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(See Solution) Participants enter a research study with unique characteristics that produce different scores from o #18827
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[Solved] A researcher conducts an experiment comparing two treatment conditions and obtains data with 10 scor #18828
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[Solution] Research has shown that losing even one night's sleep can have a significant effect on performance o #18829
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[Solution] Pelton (1983) repoerted that Olympic-level Marksmen shoot much better if they fire between heartbeat #18830
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[Solved] The student population at the state college consists of 55% females and 45% males. a. The college th #18831
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[Solved] A communications company has developed three new designs for a cell phone. To evaluate consumer resp #18832
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[Solved] Gender differences in dream content are well documented. Suppose a researcher studies aggression con #18833
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(Solved) For the following scores, X Y 3 12 6 7 3 9 5 7 3 10 c. Compute the Pearson correlation. #18835
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(See Solution) It is well known that similarity in attitudes, beliefs, and interests plays an important role in int #18836
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[Solution] Describe the distribution of sample means (shape, expected value, and standard error) for samples of #18838
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[Solved] For a population with a mean of µ = 50 and a standard deviations of s =10, how much error, on averag #18839
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(Solved) For a population with a mean of µ =60 and a standard deviation of s = 24, find the z-score correspon #18840
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[Solved] For a population mean a mean of μ =60 and a standard deviation of σ =24, find the z-score c #18841
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[Solved] The population of IQ scores forms a normal distribution with a mean of μ =100 and a standard devi #18842
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(See Solution) The population of SAT scores forms a normal distribution with a mean of μ =500 and a standard dev #18843
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Solution: A normal-shaped distribution has mean of µ = 80 and s =15. b. What are the x-score values that form #18844
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[Solved] People are selected to serve on juries by randomly picking names from the list of registered voters. #18845
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(See Solution) Last fall, a sample of n = 36 freshman was selected to participate in a new 4-hour training program #18847
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[Solved] A researcher would like to examine the effects of humidity on eating behavior. It is known that labo #18849
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[Solution] Bring to mind a real-world situation or problem that could be addressed using a analysis of variance #18850
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(See Solution) Visit the following Web site Central Limit Theorem Applet and read what is posted: http://www.stat.s #18851
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Solution: A normal distribution has u = 40 and SD = 8. a. Describe the distribution of sample means based on s #18852
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[Solved] A population has u = 80 with SD = 8. The distribution of sample means for samples of size n = 4 sele #18853
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(Solved) A sample of n = 16 scores is obtained from a population with u = 70 and SD = 20. If the sample mean #18854
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[Solution] A random sample of n = 4 scores is obtained from a normal population with u = 20 and SD = 4. What is #18855
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Solution: Define the following: a- distribution of sample means b- Standard error of M c- The central limit th #18856
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(See Solution) Data 1 2 2 3 3 3 4 4 4 4 4 4 5 5 5 6 6 7 Compute the following statistics a)M b) SD c)SE d) the 95% #18857
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[Solved] Define the following a) A statistical significant result b) alpha level c) Type I error d) Type 2 er #18858
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(Solved) Find a• b for (a) a = (4,-1), b = (3,6) (b) a = (5,0,-2), b = (3,-1,10) #18862
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Solution: Find the ?w/?z for w=z{e^{xyz}}. #18875
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[Solved] ∫{{{ sin }^2}3xdx} #18897
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[Solved] ∫{{{ sin }^2}x{{ cos }^3}xdx} #18898
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Solution: ∫{(dx)/(x^2√{x^2+9)}} #18899
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[Solution] For the given table, find T4 and S4 x | f(x) -1 | 2.0 -.5 | 1.5 0 | 1.0 .5 | 0.5 1 | 3.0 #18902
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[Solved] Automobile insurance is much more expensive for teenage drivers than for older drivers. To justify t #18906
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Solution: Having successfully completed JUS 520, a research team drafts you to help with statistics on a proje #18907
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