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A study was conducted to determine if there is a difference between the investing preferences of mid-level managers working in the public and private sectors in New York City. A random sample of 320 public sector employees and 380 private sector employees was taken. The sampled participants were then asked about their retirement investment decisions and classified as being either "aggressive," if they invested only in stocks or stock mutual funds, or "balanced," if they invested in some combination of stocks, bonds, cash, and other. The following results were found:
a. State the hypothesis of interest and conduct the appropriate hypothesis test to determine whether there is a relationship between employment sector and investing preference. Use a level of significance of 0.01.
b. State the conclusion of the test conducted in part a.
c. Calculate the p-value for the hypothesis test conducted in part a.
A researcher conducts an independent -measures research study and obtains t= 2.070 with df = 28. How many individuals participated in the entire research study?
Assume that you go to the drive through window at Wendy's and place an order. Two friends of yours independently place orders at the drive through window at the same Wendy's.
1.a small college has 500 freshmen 400 sophomores 350 juniors and 300 seniors. they wish to conduct a survey of their
Bryan money to drive to Madison to buy gas for each of his cars since he has to drive there twice a week anyway?
during ejection from a military airplane the pilots acceleration must not exceed 16g ig injury is to be avoided.
1.which of the following would have a binomial distribution?a.a couple will have children until they have three girls
a simple system consists of four components placed in parallel. each component has the same reliabity r. if we want the
suppose x and y have joint density fxy 10x2y when 0 lt y lt x lt 1.a find the marginal densities of x and y and theb
Is a body temperature of 99.00F unusual? Why or Why not? d)fifty adults are randomly selected. What is the likelihood that the mean of their body temperatures is 97.98F or lower?
The following data are from two separate samples. Does it appear that these two samples came from the same population or from two different populations?
A researcher hypothesized that individuals who listen to classical music will score differently from the general population on a test of spatial ability. On a standardized test of spatial ability, u = 58. A random sample of 14 individuals wh..
For a discrete probability function that is given as: a. What is the expected value E(Y)? b. What is the standard deviation (σ) of the random variable Y?
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