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Consider the following hypothesis test:
Ho: μ ≥ 14
Ha: μ < 14
A sample of 64 provides a sample mean of 13 and a sample standard deviation of 4.
a. Determine the standard error of the mean.
b. Compute the value of the test statistic.
c. Determine the p-value; and at 95% confidence, test the above hypotheses.
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Pilot sample of n = 50 tires illustrated sample standard deviation equal to 4,000 miles. Based on this information, required sample size is?
They find that these 100 people lost an average of 38 hours with a standard deviation of 9.5 hours. What is the P-value for this significance test?
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If the observed value is 4, the expected value is 5, and the standard error is 4, then the test value used for the z test is equal to
Find the probability that a women develops breast cancer given that she has a family history of breast cancer._____________
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