[Solution] A variable of two populations has a mean of 7.9 and a standard deviation of 5.4 for one of the populations and a mean of 7.1 and a standards deviation
Question: A variable of two populations has a mean of 7.9 and a standard deviation of 5.4 for one of the populations and a mean of 7.1 and a standards deviation of 4.6 for the other population.
- For independent samples of sizes 3 and 6, respectively, find the mean and standard deviation of.
- Must the variable under consideration be normally distributed on each of the two populations for your answer part (a)? Explain your answer.
- Can you conclude that the variable is normally distributed? Explain your Answer.
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![[Steps Shown] In 2000, 8.6% of all](/images/solutions/MC-solution-library-68165.jpg "[Steps Shown] In 2000, 8.6% of all U.S. families had incomes below")
[Steps Shown] In 2000, 8.6% of all U.S. families had incomes below
(See Solution) Decide whether the use of the pooled t-test and
![[Solved] Use the pooled t-test and the](/images/solutions/MC-solution-library-68167.jpg "[Solved] Use the pooled t-test and the pooled t-interval procedure")
[Solved] Use the pooled t-test and the pooled t-interval procedure
![[Solution Library] In the paper](/images/solutions/MC-solution-library-68168.jpg "[Solution Library] In the paper")
[Solution Library] In the paper "The Relation of Sex and Sense of Direction
(Steps Shown) Refer to Exercise 10.34 and obtain 98% confidence interval
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