An Advertisement for Meijer, a Supermarket Chain in Michigan, Claims

Short Answer

An advertisement for Meijer, a supermarket chain in Michigan, claims that Meijer has had consistently lower prices than four other full-service supermarkets. As part of a survey conducted by an "independent market basket price-checking company", the average weekly total, based on the prices of approximately 95 items, is given for two different supermarket chains recorded during 4 consecutive weeks in a particular month. Is there a significant difference in the average prices for these two different supermarket chains? Test at = 0.05. What is the approximate p-value for the test? Construct a 95% confidence interval for the difference in the average prices for the two supermarket chains.
Test Statistic = ______________
Reject Region: Reject H₀ if |t| > ______________
Conclusion: ______________
One ______________ conclude that the means are different.
P-value = ______________ Enter (n1, n2)
What is the 95 % confidence interval? (CI)
CI = ______________ Enter (n1, n2)