According to a research center, 9% of all merchandise sold in a
particular country gets returned. A department store in a certain
city sampled 80 items sold in January and found that 16 of the
items were returned.
(a)
Construct a point estimate of the proportion of items returned for
the population of sales transactions at the store in the given
city.
(b)
Construct a 95% confidence interval for the proportion of returns
at the store in the given city. (Round your answers to four decimal
places.)
to
(c)
Is the proportion of returns at the store in the given city
significantly different from the returns for the country as a
whole? Provide statistical support for your answer.
Develop appropriate hypotheses such that rejection of H0 will
support the conclusion that the proportion of returns at the store
in the given city is significantly different from the returns for
the country as a whole.
H0: p ≤ 0.09
Ha: p > 0.09
H0: p = 0.09
Ha: p ≠ 0.09
H0: p ≥ 0.09
Ha: p < 0.09
H0: p > 0.09
Ha: p ≤ 0.09
H0: p < 0.09
Ha: p ≥ 0.09
Find the value of the test statistic. (Round your answer to two
decimal places.)
Find the p-value. (Round your answer to four decimal places.)
p-value =
At
α = 0.01,
what is your conclusion?
Do not reject H0. There is insufficient evidence to conclude that
the return rate for the store in the given city is different than
the country's national return rate.
Reject H0. There is insufficient evidence to conclude that the
return rate for the store in the given city is different than the
country's national return rate.
Reject H0. There is sufficient evidence to conclude that the return
rate for the store in the given city is different than the
country's national return rate.
Do not reject H0. There is sufficient evidence to conclude that the
return rate for the store in the given city is different than the
country's national return rate.
According to a research center, 9% of all merchandise sold in a particular country gets returned....
You may need to use the appropriate technology to answer this question. According to a research center, 9% of all merchandise sold in a particular country gets returned. A department store in a certain city sampled 80 items sold in January and found that 16 of the items were returned. (a) Construct a point estimate of the proportion of items returned for the population of sales transactions at the store in the given city. (b) Construct a 95% confidence interval...
According to the University of Nevada Center for Logistics Management, 6% of all merchandise sold in the United States gets returned. A Houston department store sampled 80 items sold in January and found that 8 of the items were returned. (a) Construct a point estimate of the proportion of items returned for the population ofsales transactions at the Houston store. If required, round your answer to three decimal places. (b) Construct a 95% confidence interval for the porportion of returns...
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TeVUI Save Submit Assignment for Grading Question 7 of 7 eBook According to the University of Nevada Center for Logistics Management, 6% of all merchandise sold in the United States gets returned. A Houston department store sampled 80 items sold in January and found that 8 of the items were returned. (a) Construct a point estimate of the proportion of items returned for the population ofsales transactions at the Houston store. If required, round your answer to three decimal places....