It opo would like to determine if this has changed is believed that historically

Question

It opo would like to determine if this has changed is believed that historically American's visit the doctor an avernage of 2.5 times per year. A research group A random sample was selected and its p-value was computed to be .047. At the 5% Significance level, which of the following best summarizes your conclusion? a. We have sufficient evidence to show that the average has changed b. We have sufficient evidence to show that the average has stayed the same. c. We do not have sufficient evidence to show that the average has changed. d. We do not have sufficient evidence to show that the average has stayed the same 10. Op) Choose the answer that best completes the sentence: A p-value of 0.592 would be considered a highly significant. b. significant c. slightly significant. d. not significant. 11 Choose the answer that best completes the sentence: Opo A p-value of 0.0048 would be considered a. highly significant. b. significant. c. slightly significant. d. not significant. Bonus (+2). Based on a random sample, a researcher determined that the 95% confidence interval for the population mean is (49.6, 57.1). Now consider the hypothesis test: Ho : 50 verses Hi : # 50, Does this sample, using -.05, provide sufficient evidence to reject Ho and conclude 50? Justify your answer.

Explanation / Answer

Q9.
p-value : two tailed ( double the one tail ) - ha : = 0.047
hence value of p0.05 > 0.047, here we reject Ho

we have suffcient evidence to show that the average has changed

Q10.
Highly siuffcient.
[REASON] p-value is compared to LOS which is mostly conisdered to maximum of 0.10 OR 0.05, we have
p-value is higher

Q11.
not significant
[REASON] p-value is compared to LOS which is mostly conisdered atleast in minmum of 0.01 OR 0.05, we have
p-value is lower

Q12.
no, we don't have suffcient evidence to reject Ho, since the population value is lies in interval
[49.6, 57.1]

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