If the absolute value of the calculated Z-value is less than the critical (or ta

Question

If the absolute value of the calculated Z-value is less than the critical (or table) Z-value, your conclusion would be _____. accept the null hypothesis. reject the null hypothesis. fail to reject the null hypothesis only (a) and (c) of the above none of the above Using the p-value approach, if the calculated Z-value is 2.27 for a two-tail test, you conclusion would be to _____ at a 5% significance level. accept the null hypothesis. reject the null hypothesis fail to reject the null hypothesis only (a) and (c) of the above none of the above Using the p-value approach, if the calculated Z-value is 2.27 for a two-tail test, you conclusion would be to _____ at a 1% significance level. accept the null hypothesis. reject the null hypothesis. fail to reject the null hypothesis only (a) and (c) of the above none of the above Using the confidence-interval approach, if the sample mean is 11 grams and a population standard deviation of 1.5 grams, the 95% confidence interval for a two-tail test Is found to be _____. between 9.5 and 12.5 between 8 and 14 between 10.41 and 11.59 between 8.06 and 13.94

Explanation / Answer

31. option c. We fail to reject null. It' not same as a. accept the null hypo

32. option b.The 5% sig. level gives Z of 1.96, 2.27 is beyond it. So, option b is the answer

33. option c. This has critical Z of 2.575, our statistic is less than that

34. option d.

Ci is given by : Mean +/- Z*sigma
11+/- 1.96*1.5
=8.06 to 13.94

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