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In a gallup survey, 1087 randomly selected adults were asked "do you have occasion to use alcoholic beverages such as liquor, wine, or beer or are you a total abstainer?" The result: 62% of the subjects said that they used alcoholic beverages. Consider a hypothesis test that uses a 0.05 significance level to test the claim that the majoirty (more than 50%) of adults use the alcoholic beverages.
a. What is the test statistic
b. What is the critical value
c. What is the p-value
d. What is the conclusion
Compute the mean and standard deviation using the formulas given in this book. Check your results by entering the data into a statistical package and obtain their results for the means and standard deviations.
The number of blemishes in rolls of Scotch brand tape coming out of a production process at a plant of the 3M Company in Minnesota is as follows.
the following data summarizes the historical demand for a productmonthnbspnbspnbspnbsp actual
If measurements are made instead on 4 separate days and the mean result is compared with the criterion 3.5, what is the probability that Judy is diagnosed as hypokalemic?
In the absence of outliers, do you think the distribution of salaries is symmetric, skewed to the left, or skewed to the right?
70% of students in a class are from in-state. 60% of students in a class are female. Looking in more detail, 45% of the students are in-state females.
When determining the sample size necessary for estimating the true population mean, which factor is not considered when sampling with replacement
In a multiple regression equation two independent variables are considered, and the sample size is 25. The regression coefficients and the standard errors are as follows.
What is the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the test? Please match the measures to their correct
One member recommends sending the survey to a simple random sample drawn from the parents but another member believes the sample should be stratified according to family income. Base on your knowledge of statistics what are the pros and cons of t..
Select a strati?ed random sample that uses full-time and part-time students as the two strata and that includes 10 students from each stratum. Describe the procedure you used to select the sample, and identify the students included in your sample..
Suppose that 55 percent of the people in a population of 500,000 support your candidate. If you conduct a poll of 1,000 people, what is the interval that has a 95 percent chance of containing the results of your poll?
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