Question

5. Hypothesis Test for Heights of Supermodels The heights are measured for the simple random sample of nine supermodels (Crawford, Bundchen, Pestova, Christenson, Hume, Moss, Campbell, Schiffer, and Taylor). They have a mean of 69.0 in. and a standard deviation of 1.6 in. The heights of 40 women, who are not supermodels, have a mean of 63.6 and a standard deviation of 2.65 in. Use a 0.01 significance level to test the claim that the mean height of supermodels is greater than the mean height of women who are not supermodels. Assume ?? = ?? a) State the hypotheses. (3 points) b) Find the critical value. (3 points) c) Find the test statistic. (3 points) d) Use the traditional method to make a decision on the null hypothesis. (3 points) e) Find the P-value. (3 points) f) Use the P-value method to make a decision on the null hypothesis. (3 points) g) State your conclusion in the context of the problem. (2 points)

          5. Hypothesis Test for Heights of Supermodels The heights are measured for the simple random
sample of nine supermodels (Crawford, Bundchen, Pestova, Christenson, Hume, Moss, Campbell,
Schiffer, and Taylor). They have a mean of 69.0 in. and a standard deviation of 1.6 in. The heights of
40 women, who are not supermodels, have a mean of 63.6 and a standard deviation of 2.65 in.

Use a 0.01 significance level to test the claim that the mean height of supermodels is greater than the
mean height of women who are not supermodels. Assume ?? = ??

a) State the hypotheses. (3 points)

b) Find the critical value. (3 points)

c) Find the test statistic. (3 points)

d) Use the traditional method to make a decision on the null hypothesis. (3 points)

e) Find the P-value. (3 points)

f) Use the P-value method to make a decision on the null hypothesis. (3 points)

g) State your conclusion in the context of the problem. (2 points)

5. Hypothesis Test for Heights of Supermodels The heights are measured for the simple random
sample of nine supermodels (Crawford, Bundchen, Pestova, Christenson, Hume, Moss, Campbell,
Schiffer, and Taylor). They have a mean of 69.0 in. and a standard deviation of 1.6 in. The heights of
40 women, who are not supermodels, have a mean of 63.6 and a standard deviation of 2.65 in.

Use a 0.01 significance level to test the claim that the mean height of supermodels is greater than the
mean height of women who are not supermodels. Assume ?? = ??

a) State the hypotheses. (3 points)

b) Find the critical value. (3 points)

c) Find the test statistic. (3 points)

d) Use the traditional method to make a decision on the null hypothesis. (3 points)

e) Find the P-value. (3 points)

f) Use the P-value method to make a decision on the null hypothesis. (3 points)

g) State your conclusion in the context of the problem. (2 points)

Added by Edward C.

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