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Two popular drugs used for the treatment of depression are Resithan and Exemor. A random sample of 588 depressed individuals is selected and treated with Resithan, and 201 find relief from their depression. A random sample of 417 depressed individuals is independently selected from the first sample and treated with Exemor, and 147 find relief from their depression. Can we conclude, at the 0.1 level of significance, that the proportion of all depressed individuals taking Resithan who find relief from depression is greater than the proportion of all depressed individuals taking Exemor who find relief from depression?Perform a one-tailed test. Then fill in the table below.
Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. (If necessary, consult a list of formulas.)
State the null hypothesis:
State the alternative hypothesis:
The type of test statistic (round to three decimal places):
The critical value at the .01 significance level (round to three decimal places):
Calculate the 95% confident interval to estimate the percentage of Millennial who believe that their generation has a distinctive identity as compared with the other generations
A research report summarizes the results of the hypothesis test by stating,"z = 2.13, p
A study of the time spent shopping in a supermar- ket for a market basket of 20 specific items showed an approximately uniform distribution between 20 minutes and 40 minutes. What is the probability that the shopping time will be:
Using smoothing constant of w = .80, compute the value of exponentially smoothed series in 1983.
If the company's report is correct, what is the probability that the average balance of an account in the sample is $383 or less?
The chi-square goodness of fit test can be used when we:
37 percent of managers have MBA degrees. Using probability formulas. Determine the proportion of employees who are managers and have MBA degrees.
Can and how would you apply basic probability concepts to facilitate business decision making? Critically discuss the difference between discrete and continuous probability distributions?
Use normal approximation to determine probability that x = 2. Illustrate all work.
If one person is arbitarily selected from this sample, determine probability of getting someone who is age 18-22 or doesn't smoke.
There are three nursing positions to be filled at Lilly Hospital. Position one is the day nursing supervisor; position two is the night nursing supervisor; and position three is the nursing coordinator position.
Seventy-five percent of households say they woud feel secure if they had $50,000 in savings. You randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings.
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