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 63.9 inches.

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

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

(c) give a conclusion for this hypothesis test assuming an =0.10 level of significance.