m l he value of the t-stat?st?c not less than the critical value, we do not reje

Question

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l he value of the t-stat?st?c not less than the critical value, we do not reject the null hypo is There is no suficient evidence to conclude that the mean of PCB concentration from the la exceeds 5ppb Question 2 Thee mean is 4 and n=10 In this case null hypothesis: the manufacturer's claim is correct mean is equal to 4 Alternative hypothesis: the manufacturer's claim is incorrect man is not equal to 4 The test statistic is 1.0997 The critical value of 5% with 9 degrees of freedom is 2.262 10997 is less than 2.262, we do not reject the null hypothesis. There is suficnet evidence to conclude that the manufacturer's claim is correct. Question 3 The sample size is 8 and the mean is 45+52-56-55+St+-57 48+51-+15/S

Explanation / Answer

here t-test is used and all the step is fine.

here we accepted the null hypothesis or fail to reject the null hypothesis.

and all the interpretation is fine here.

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