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A consumer organization wants to know if there is a difference in the price of a particular toy at three different types of stores. The price of the toy was checked in a sample of five discount toy stores, five variety stores, and five department stores. The results are shown below. Conduct the test by using the five-step procedure and completing ANOVA table. If you reject Ho, span confidence intervals to show which means are different. Use 0.05 level of significance.
Do you believe that the government should or should not be allowed to prohibit teachers from expressing their religious beliefs in public schools classrooms?
One table has a standard deviation of $50 while the other has a standard deviation of $150. What conclusion can be drawn from the data?
If the researcher wants to test if the blood pressure measurements after the procedure are different from the blood pressure measurements before the procedure, what will the null and alternative hypotheses be? Treat the differences as (blood press..
Make three-month and four-month moving averages for this time series. Does the three-month or four month moving average provide the better forecast? Explain.
Of the 1,4000 homemakers sampled, 420 were able to identify the brand by name. Compute the standard error of the proportion.
At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
You're considering paying $5 to buy a ticket in a local lottery. You were told that 10,000 tickets will be sold. There are 5 prizes. The first prize is $5,000, the second is $1,000, the third is $500, the fourth is $100 and the last prize is $10.
Create ADM/PERT diagram. Determine the critical path.
A professor obtains SAT scores and freshman grade point averages (GPAs) for a group of n=15 college students. The SAT scores have a mean of M=580 with SS=22,400, and the GPAs have a mean of 3.10 with SS=1.26, and SP=84.
The random variable xi represents the number of complaints, and p(xi) is the probability of receiving xi complaints.
Powers Tire Company (Which specializes in tires for vehicles ca. 1965) needs your expertise to help them schedule over the next three months. They can make tires using regular labor, or subcontracting.
Research question : At α = . 05, is cockpit noise level independent of flight phase?
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