Groceries In January 2011, Yahoo surveyed 2400 U.S.men. 1224 of the men identified themselves as theprimary grocery shopper in their household.a) Estimate the percentage of all American males whoidentify themselves as the primary grocery shopper. Usea 98% confidence interval. Check the conditions first.b) A grocery store owner believed that only 45% of menare the primary grocery shopper for their family, and targets his advertising accordingly. He wishes to con-duct a hypothesis test to see if the fraction is in fact higher than 45%. What does your confidence intervalindicate? Explain.c) What is the level of significance of this test? Explain.
Groceries In January 2011, Yahoo surveyed 2400 U.S.men. 1224 of the men identified themselves as theprimary grocery shopper in their household.a) Estimate the percentage of all American males whoidentify themselves as the primary grocery shopper. Usea 98% confidence interval. Check the conditions first.b) A grocery store owner believed that only 45% of menare the primary grocery shopper for their family, and targets his advertising accordingly. He wishes to con-duct a hypothesis test to see if the fraction is in fact higher than 45%. What does your confidence intervalindicate? Explain.c) What is the level of significance of this test? Explain.
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.CT: Chapter Test
Problem 24CT: Show the sample space of the experiment: toss a fair coin three times.
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Groceries In January 2011, Yahoo surveyed 2400 U.S.
men. 1224 of the men identified themselves as the
primary grocery shopper in their household.
a) Estimate the percentage of all American males who
identify themselves as the primary grocery shopper. Use
a 98% confidence interval. Check the conditions first.
b) A grocery store owner believed that only 45% of men
are the primary grocery shopper for their family, and
men. 1224 of the men identified themselves as the
primary grocery shopper in their household.
a) Estimate the percentage of all American males who
identify themselves as the primary grocery shopper. Use
a 98% confidence interval. Check the conditions first.
b) A grocery store owner believed that only 45% of men
are the primary grocery shopper for their family, and
targets his advertising accordingly. He wishes to con-
duct a hypothesis test to see if the fraction is in fact
duct a hypothesis test to see if the fraction is in fact
higher than 45%. What does your confidence interval
indicate? Explain.
c) What is the level of significance of this test? Explain.
indicate? Explain.
c) What is the level of significance of this test? Explain.
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