The measure of an angle is 89º. Find the measure of its supplement
2 answers:
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Answer:
The null and alternative hypothesis are:
The test statistic for this hypothesis test is z=-1.15.
The P-value for this hypothesis test is P-value=0.124.
The null hypothesis failed to be rejected.
There is not enough evidence to support the claim that less than 10 percent of the test results are wrong.
Step-by-step explanation:
This is a hypothesis test for a proportion.
The claim is that less than 10 percent of the test results are wrong.
Then, the null and alternative hypothesis are:
The significance level is 0.05.
The sample has a size n=317.
The sample proportion is p=0.079.
The standard error of the proportion is:
Then, we can calculate the z-statistic as:
This test is a left-tailed test, so the P-value for this test is calculated as:
As the P-value (0.124) is greater than the significance level (0.05), the effect is not significant.
The null hypothesis failed to be rejected.
There is not enough evidence to support the claim that less than 10 percent of the test results are wrong.