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test the claim about the population mean u at the level of significance a. assume the...

test the claim about the population mean u at the level of significance a. assume the population is normally distributed claim u=1660 a=0.01 o=82 sample statistics x=1630 n=35

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Answer #1

This is the two tailed test .

The null and alternative hypothesis is

H0 : = 1660

Ha : 1660

Test statistic = z

= ( - ) / / n

= (1630 - 1660) / 82 / 35

Test statistic = -2.16

P-value = 0.0308

P-value >

Fail to reject the null hypothesis .

There is sufficient evidence to conclude that the claim is not true .

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