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An automobile manufacturing plant produced 29 vehicles today: 9 were sedans, 10 were vans, and 10 were trucks. Plant managers are going to choose two of these vehicles for thorough inspection. The first vehicle will be chosen at random, and then the second vehicle will be chosen at random from the remaining vehicles. What is the probability that two vans will be selected? Report your answer as an exact fraction.
a) Find the price that this model estimates. b) The house just sold for $291,000 Find the residual corresponding to this house. c) What does that residual say about this transaction?
use 0.05 significance level. a. state the null hypothesis HO: H1: B state the decision rule c. compute the value of the test statistic d. estimate the p value e. what is your decision regarding null hypothesis?
mean is calculated for each sample, then the average distance between M and u would be:
inclusions are defects in poured metal caused by contaminants. the number of large inclusions in cast iron follows a
The booster club has gotten several businesses and car dealers to donate gasoline and cars for the college students to use to make a maximum of 575 personal contacts daily during the fund-raising drive. The college student will donate a total of 2..
An overnight express company must include seven cities on its route. How many different routes are possible, assuming that it matters in which order the cities are included in the routing?
Using the information above, what total size sample would be necessary if we wanted to estimate the true proportion to within? 0.08 using 95% confidence?
Your quality control department has just analyzed the contents of 20 randomly selected barrels of materials to be used in manufacturing plastic garden.
a. Compute the mean quoted airfare. b. Compute the variance and standard deviation in airfares quoted. Treat the data as a sample.
The mean lifetime of electric light bulbs produced by a company has in the past been 1120 hours with a standard deviation of 125 hours. A sample of 20 bulbs revealed a standard deviation in the lifetimes of 150 hours.
Unless otherwise noted, the given loads are superimposed loads; neglect the beam weight; neglect shear and moment considerations.
A student earned grades of 78, 78, 91, and 91 on her four tests. She earned 78 on the final exam and 87 on her class project. What is her weighted mean grade? Roundto one decimal place.
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