Statistics - Hypothesis Testing Projects

Sports and Leisure. Find the mean and standard deviation for the batting average for a player in the most

#1: Sports and Leisure. Find the mean and standard deviation for the batting average for a player in the most recently completed MBL season. What batting average would separate the top 5% of all hitters from the rest? What is the probability that a randomly selected player bats over 0.300? What is the probability that a team of 25 players has a mean that is above 0.275?

Go to for collection of data http://espn.go.com/mlb/players/profile?playerId=4652

#2 Health and Wellness Use information from the Red Cross to create a pie chart depicting the percentages of Americans with various blood types. Also find information about blood donations and the percentage of each type donated. How do the charts compare? Why is the collection of type O blood so important?

Data collected

Human Blood Type Chart – A, B, AB or O
ABO Blood Type	Per Cent of General Population	Can DONATE Red Cells To:	Can RECEIVE Red Cells From:	Chance of Finding A Compatible Donor
O+	38.5%	O+, A+, B+, AB+	O+, O-	1 out of 2 50%
O-	6.5%	All Types (universal donor)	O-	1 out of 15 7%
A+	34.3%	A+, AB+	A+, A-, O+, O-	4 out of 5 80%
A-	5.7%	A-, A+, AB-, AB+	A-, O-	1 out of 8 13%
B+	8.6%	B+, AB+	B+, B-, O+, O-	3 out of 5 60%
B-	1.7%	B-, B+, AB-, AB+	B-, O-	1 out of 12 9%
AB+	4.3%	AB+	All Types (universal recipient)	100%
AB-	0.7%	AB-, AB+	AB-, A-, B-, O-	1 out of 7 14%
Significant ABO blood type distribution variation occurs between the world's various ethnic and geographic populations.

Human Blood Types Listed by Frequency of Occurrence
in the U.S. General Population

Type	Per Cent	Note
O+	38.5%	-
A+	34.3%	-
B+	8.6%	-
O-	6.5%	Universal donor
A-	5.7%	-
AB+	4.3%	Universal recipient
B-	1.7%	-
AB-	0.7%	-

#2. Have each person in class take his or her pulse and determine the heart rate (beats in one minute). Use the data to create a frequency table with 6 classes. Then have everyone in the class do 25 jumping jacks and immediately take the pulse again after the activity. Create a frequency table for those data as well. Compare the two results. Are they similarly distributed?

How does the range of scores compare?

Data collected

Before jumping jacks, beats per minute – 80, 83, 80, 90, 88, 88, 94, 82, 84, 93, 98, 86, 91, 90, 96

After jumping jacks beats, per minute – 150, 148, 155, 165, 148, 152, 163, 138, 158, 144, 164, 157, 166, 149, 159

#3 Health and Wellness Use the data regarding heart rates collected in answer #2 problem. Use the sample mean and standard deviation as estimates of the population parameters. For the
before-exercise data, what heart rate separates the top 10% from the other values? For the after-exercise data, what heart rate separates the bottom 10% from the other values? If a student was selected at random, what is the probability that her or his mean heart rate before exercise was less than 72? If 25 students were selected at random, what is the probability that their mean heart
rate before exercise was less than 72?"

Price: $23.37

Solution: The downloadable solution consists of 16 pages, 737 words and 28 charts.
Deliverable: Word Document