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A researcher was interested in comparing the heights of women in two different countries


A researcher was interested in comparing the heights of women in two different countries. Independent simple random samples of 9 women from country A and 9 women from country B yielded the following heights (in inches). 

Country A: 64.1 66.4 61.7 62.0 67.3 64.9 64.7 68.0 63.6 

Country B: 65.3 60.2 61.7 65.8 61.0 64.6 60.0 65.4 59.0 


At the 5% significance level, do the data provide sufficient evidence to conclude that the mean height of women in country A is different from the mean height of women in country B? Assume both populations are normal. 

a) State the null and alternative hypotheses symbolically. 

b) Use 1-var-stats to find the sample means and the sample standard deviations 

c) Check assumptions and choose an appropriate test procedure. 

d) Compute the value of the test statistic. 

e) Determine the P-value. Please show your work 

f) Decide on the null hypothesis (reject H, or do not reject H.). 

g) Interpret the results of the hypothesis test.

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