Question 11 Several years ago the mean height of women 20 ye

Question 11

Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 64.1 inches.

(a) State the appropriate null and alternative hypothesis to assess whether women are taller today.

(b) Suppose the P-value for this text is 0.03. Explain what this value represents.

(c) Write a conclusion for this hypothesis text assuming an ? =0.10 level of significance.

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(A)   State the appropriate null and alternative hypothesis to assess whether women are taller today.

a. H0:

Solution

Several years ago, the mean height of women 20 years of age or older was 63.7 inches. Suppose that a random sample of 45 women who are 20 years of age or older today results in a mean height of 64.1 inches.

a. state the appropriate null and alternative hypotheses to

assess whether women are taller today.

A. (H subscript 0: Mu=63.7 inches) vs. (H subscript 1: Mu >63.7 inches)-------------ANSWER

There is a 0.03 probability of obtaining a sample mean height of 64.1 inches or taller from a population whose mean height is 63.7 inches.-----------ANSWER