GM 533 TCO (PC Manufacturer Version 2)

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GM 533 - TCO (PC Manufacturer Version 2)

  1. TCO D) A PC manufacturer claims that no more than 5% of their machines are defective. In a random sample of 100 machines, it is found that 8.5% are defective. The manufacturer claims this is a fluke of the sample. At a .02 level of significance, test the manufacturer's claim, and explain your answer.

Test and CI for One Proportion

Test of p vs p

Sample

X

N

Sample p

98% Lower Bound

Z-Value

P-Value

1

8

100

(Points : 20)

Hypotheses:

Ho: p (null)

Ha: p (alternative)

Decision rule and test type:

"?"

Right tailed test (alternative is sign)

Critical value z_()

Reject the null if the test statistic exceeds .

Standard error sqrt{[p(1-p)]/n}

Z(P-p)/(SE)

Decision:

is not greater than...

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