Question

Calculate the value of the test statistic, set up the rejection region, determine the p-value, interpret...

Calculate the value of the test statistic, set up the rejection region, determine the p-value, interpret the result, and draw the sampling distribution.

H0: ? = 1000

H1: ? doesn't equal 1000

? = 200

n = 100

?̅ = 980

∝ = 0.01

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Solution :

This is the two tailed test .

The null and alternative hypothesis is ,

H0 :   =1000

Ha : 1000

Test statistic = z

= ( - ) / / n

= (980-1000) / 200 / 100

Test statistic = -1

P(z <-1 ) = 0.1587

P-value = 2*0.1587=0.3174

=0.01

P-value >

DO NOT REJECT NULL HYPOTHESIS

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