Question

H0:p=0.69H0:p=0.69 H1:p<0.69H1:p<0.69 Your sample consists of 129 subjects, with 95 successes. Calculate the test statistic, rounded...

H0:p=0.69H0:p=0.69
H1:p<0.69H1:p<0.69

Your sample consists of 129 subjects, with 95 successes. Calculate the test statistic, rounded to 2 decimal places

z=

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Answer #1

SOLUTION

= 0.69

1 - = 0.31

n = 129

x = 95

Point estimate = sample proportion = = x / n = 95 / 129 = 0.7364

Test statistics

z = ( - ) / *(1-) / n

= ( 0.7364 - 0.69) / (0.69*0.31) /129

= 1.14

The test statistic is 1.14

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