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An advertisement for the Valu-For-Your-Money supermarket claims that customerservice is rated 9.8 (out of 10). A disgruntled customer disagrees with this claim. Thecustomer randomly selected a sample of 100 customers and found that the sample meanrating was 8.7 with a sample standard deviation of 0.8.
(a) Calculate the 97% confidence interval for the population mean customer servicerating.Assist the customer in conducting a hypothesis test, at the 3% level of significance, todetermine whether the claim on the advertisement was overstated.
(b) State the null and the alternative hypothesis for this test
(c) Calculate the value of the test statistic for this test.
(d) Calculate the p-value for this test.
(e) Use the p-value approach to state the conclusion of this test, giving reason for your answer.
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The savings supply curve is derived from the fact that: The investment demand curve is derived from the fact that:
The difference between a final good and an intermediate good is that. Gross domestic product is the market value of all:
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How does the demand curve faced by a purely monopolistic seller differ from that confronting a purely competitive firm? Why does it differ? Of what significance is the difference? Why is the pure monopolist's demand curve not perfectly inelastic?
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