Define the - value of the hypothesis test.
The \(P-\)value is the probability that the data from the sample is inconsistent with the null hypothesis.
Define the \(P-\)value of a hypothesis test.
The definition of the \(P-\)value is the probability that the data from the sample is inconsistent with the null hypothesis.
Thus, \(P-\)value is the probability that the data from the sample is inconsistent with the null hypothesis.
Job Gains and Losses. In the article "Business Employment Dynamics: New Data on Gross Job Gains and Losses" (Monthly Labor Review, Vol. 127, Issue 4, pp. 29-42), J. Spletzer et al. examined gross job gains and losses as a percentage of the average of previous and current employment figures. A simple random sample of 20 quarters provided the net percentage gains (losses are negative gains) for jobs as presented on the WeissStats site. Use the technology of your choice to do the following.
a. Decide whether, on average, the net percentage gain for jobs exceeds 0.2. Assume a population standard deviation of 0.42. Apply
which we provide on the WeissStats site. Use the technology of your choice to do the following.
a. Obtain a normal probability plot, boxplot, histogram, and stemand-leaf diagram of the data.
b. Based on your results from part (a), can you reasonably apply the one-mean -test to the data? Explain your reasoning.
c. At the significance level, do the data provide sufficient evidence to conclude that the mean body temperature of healthy humans differs from ? Assume that .
As we mentioned on page 378, the following relationship holds between hypothesis test and confidence intervals for one-mean z-procedures: For a two-tailed hypothesis test at the significance level , the null hypothesis role="math" localid="1653038937481" will be rejected in favor of the alternative hypothesis if and only if lies outside the -level confidence interval for . In each case, illustrate the preceding relationship by obtaining the appropriate one-mean z-interval and comparing the result to the conclusion of the hypothesis test in the specified exercise.
Part (a): Exercise 9.84
Part (b): Exercise 9.87
94% of StudySmarter users get better grades.Sign up for free