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(Solved): A university claims that their employment rate directly after graduation is 40%. In a sample of 100 ...



A university claims that their employment rate directly after graduation is 40%. In a sample of 100 graduates, 32 found to have gained employment directly after graduation. Test the claim that the university's employment rate after graduation is smaller than 40% at the 0.10 significance level.

The null and alternative hypothesis would be:

H0:p≥0.4 0:≥0.4
H1:p<0.4 1:<0.4

H0:μ=0.4 0: =0.4
H1:μ≠0.4 1: ≠0.4

H0:μ≤0.4 0: ≤0.4
H1:μ>0.4 1: >0.4

H0:p≤0.4 0: ≤0.4
H1:p>0.4 1: >0.4

H0:p=0.4 0: =0.4
H1:p≠0.4 1: ≠0.4

H0:μ≥0.4 0: ≥0.4
H1:μ<0.4 1: <0.4



The test is:

right-tailed

two-tailed

left-tailed





The test statistic is: (to 2 decimals)

The p-value is: (to 4 decimals)

Based on this we:

Reject the null hypothesis

Fail to reject the null hypothesis



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Given:
n = 100
x = 32
Population Proportion, p = 0.40
Significance level,    = 0.10
Solution:
Sample proportion:






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