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Suppose that the distribution of speeds at an interstate highway location is bell-shaped with a mean of 71 mph and a standard deviation of 5 mph. Use the Empirical Rule to complete each sentence:
a. About 68% of vehicles at this location travel between and mph.
b. About 95% of vehicles at this location travel between and mph.
c. About 99.7% of vehicles at this location travel between and mph.
Two hundred raffle tickets are sold. Your friend has 5 people in her family who each bought two raffle tickets. What is the probability that someone from her family will win the raffle?
What formula would I use? Can you break it down into baby steps so I can understand how you got the answer?
Based on sample data, the 95% confidence interval for the population mean is from $150 to $250.
Logging in the rain forest: contrasts. Figure 29.2 (page 29-5) gives basic ANOVA output for the study of the effects of logging described in Example 29.1. We might describe the overall effect of logging by comparing the mean species count for unlo..
run a regression analysis on the following data set with y as the response
a passenger can travel from home to another city by car c ship s place p or train t. in a given year the passenger
If the sum of squares total is 800 and the sum of squares error is 170. What is the r-squared value?
a local board of education conducted a survey of residents in the community concerning a property tax levy on the
A teacher gives a pre and post test to her students, she wants to know if there is a difference in the number of points students earned on their pretest and post test.
a student has 40 chance of getting a scholarship. consider a group of 10 students.a. what is the probability that
generate a chart or table that lists a variety of crimes types. your chart should include at least four types of crimes
A computer network manager wants to test the reliability of some new fiber optic cables that the department just received. The department received 4 boxes, each containing 30 cables.
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