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In the following problems, use the given sample data to perform a one-way ANOVA test using a .05 level of significance. What are your conclusions? Assume the sample is drawn from a normal population, the samples are independent, and the populations have the same variances .The table shows the average annual cost of high speed internet access in dollars for a random sample of individuals in four different regions of a state. Northern Southern Eastern Western 125 145 162 171 130 120 158 168 115 140 145 187 124 138 143 155 120
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When 319 college students are arbitarily selected and surveyed, it is observed that 120 own a car. Determine a 99% confidence interval for true proportion of all college students who own a car.
is there a relationship between gender and the type of car driven? a random sample of 1000 adults was obtained. the
How is the criminal justice system portrayed in the media and what impact does the media have on a viewer's perception as to the system's efficacy in dealing with crime?
The famous Y. S. Chang Restaurant is open 24 hours a day. Waiters and busboys report for duty at 3 A.M., 7 A.M., 11 A.M., 3 P.M., 7 P.M., or 11 P.M., and each works an8-hour shift. The following table shows the minimum number of workers needed during..
Sketch the distributions involved, and (c) explain your answer to someone who is familiar with the t test for a single sample but not with the t test for independent means.
She has a history of being successful at getting a donor on 55 percent of her calls. If June has a quota to get at least four donors each day.
Outline the difference between the t test for independent groups and the t test for matched groups. A researcher computed the F ratio for a four-group experiment.The computed F is 4.86. The degrees of freedom are 3 for the numerator and 16 for the ..
a new integrated computer system is to be installed worldwide for a major corporation. bids on this project are being
The population variances from both types of digital cameras are equal, is there evidence of a difference in the mean battery life between the two types of digital cameras
Blood type AB is found in only 3% of the population. If 320 people are chosen at random, find the probability of the following. (Round your answers to four decimal places.)
An averaged department store sells 350 mens suits per year. The mens suit departments at a particular national chain of stores claim they sell more than the industry average.
Which promises the profit of $24,000 with the probability of .7 or a loss (due to bad weather, strikes, and such) of $8000 with the probability of .3. Determine the expected profit?
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