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QUESTION
Listed below are randomly selected heights (in inches) of males from year 1877 and from a recent survey.
Listed below are randomly selected heights (in inches) of males from year 1877 and from a recent survey.
Height from year 1877
71 62 64 68 68 67 65 65 66 66
Recent Heights
63 66 68 72 73 62 71 69 69 68
- Find the mean and standard deviation for each of the two samples.
- Use a 0.05 significance level to test the claim that heights of men from 1877 have a mean less than 69.1 inches, which is the mean height given for men today.
- Construct a 95% confidence interval estimate of the mean height of males in 1877.
- Use a 0.05 significance level to test the claim that males in 1877 had a mean height that is less than the mean height of males today.
