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A random sample of 31subjects who identified themselves as compulsive buyers was obtained and given a questionnaire. They had a mean questionnaire score of 0.56 with a standard deviation of 0.14. Test the claim that the population of? self-identified compulsive buyers has a mean greater than the mean of 0.55 for the general population. Use a 0.05 significance level. State the null and alternative hypothesis. Find the Z-score and P-value.
State the conclusion.
A. The? P-value is greater than the significance level. There is not sufficient evidence to support the claim that the population of? self-identified compulsive buyers has a mean greater than the mean of 0.55 for the general population.
B.The? P-value is greater than the significance level. There is sufficient evidence to support the claim that the population of? self-identified compulsive buyers has a mean greater than the mean of 0.55 for the general population.
C. The? P-value is less than or equal to the significance level. There is sufficient evidence to support the claim that the population of?self-identified compulsive buyers has a mean greater than the mean of 0.55 for the general population.
D.The? P-value is less than or equal to the significance level. There is not sufficient evidence to support the claim that the population of?self-identified compulsive buyers has a mean greater than the mean of 0.55 for the general population.
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