Asked by Hloni Nkolanyane on Apr 28, 2024
Verified
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)
Significant Difference
A result in data indicating that the observed effect or difference is unlikely to have occurred due to chance or random variation.
Supermarket Chains
Large retail organizations operating multiple grocery stores under the same brand or ownership, offering a wide variety of food and household products.
- Carry out testing of hypotheses and create confidence intervals for means and variances within populations.
- Use proper statistical methods to investigate hypotheses about means and variances in real-life situations.
Verified Answer
DE
Danielle ElgaratMay 01, 2024
Final Answer :
-3.0; 3.182; Do not reject H0; cannot; (.05, .10); (-34.5627, 1.0277)
Learning Objectives
- Carry out testing of hypotheses and create confidence intervals for means and variances within populations.
- Use proper statistical methods to investigate hypotheses about means and variances in real-life situations.
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