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The probabilities are 0.40, 0.50, and 0.10 that, in city driving, a certain kind of compact car will average less than 28 miles per gallon, from 28 to 32 miles per gallon, or more than 32 miles per gallon. Find the probability that among 10 such cars tested, 3 will average less than 28 miles per gallon, 6 will average from 28 to 32 miles per gallon, and 1 will average more than 32 miles per gallon.
Compute the mean of the sampling distribution? Compute the standard deviation of sampling distribution?
for each of the following variables determine whether the variable is categorical or numerical. if the variable is
State appropriate null and alternative hypotheses. Report the test statistic, its degrees of freedom, and the P-value. What do you conclude?
in a multiple regression analysis with two independent variables the multiple standard error of estimate measures the
For a sample of 12 items from a normally distributed population for which the standard deviation is s=17.0, the sample mean is 230.8. At the 0.05 level of significance
What is the probability that this process will be stopped within the next hour and what is the variance of the number of defectives in a batch of 15 ?
The researcher found that Abraham Lincoln's educational score did not correlate highly with the expected variable. What is wrong?
The U.S. forest service is considering additional restrictions on the number of vehicles allowed to enter Yellowstone National Park. To assess public reaction, the service asks a random sample of 150 visitors if they favor the proposal.
the number of emergency calls received by the local 911 call center is as follows. using trend projection to forecast
a business person looking at data wonders does the average price for medium fuel in the united states differ
How many different combinations of a 3-member debating team can be formed from a group of 16 qualified students?
A professor wants to conduct a study to know whether the grades she gives to her students affect their evaluations of her. She teaches four classes of ten students each.
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