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The tire managers want the probability information about the number of tires out of 100 that will last over 75,000 miles. Let x denote the number of tire lasts over this amount. Engineers estimate that the mean tire is 20 tires that will last over 75,000 miles, standard deviation is 4. In addition, the data collected indicated that a normal distribution is a reasonable assumption.
What is the probability that fifteen or fewer tires will last more than 75,000 miles?
What is the probability that eighteen to twenty two tires will last more than 75,000 miles?
If the required return is 11 percent, should the firm accept the project? Yes or No?
1. Calculate the mean, median, and standard deviation for ounces in the bottles. 2. Construct a 95% Confidence Interval for the ounces in the bottles.
Verify that for the data in Table 6.6, when testing the hypothesis of homoscedasticity using the R function khomreg, you fail to reject with α = 0.05. Explain why this result is not a satisfactory reason for assuming homoscedasticity.
A drug for female sexual dysfunction called Intrinsa was tested in 2004, both for efficacy and for possible dangerous side effects before being considered
Pets again. The local animal shelter in Exercise reported that it currently has 24 dogs and 18 cats available for adoption; 8 of the dogs and 6 of the cats.
What is the probability that there are more than 16.5 grams of protein in the cup of yogurt - Suppose that six cups of yogurt are selected at random
Graph the data, and comment on skewness and outliers. A rank test is appropriate.- We would like to test hypotheses about the median reading from home radon detectors:
A student in statistics argues that the concepts of mutually exclusive events and independent events are really the same , and that if events are mutually exclusive they must be independent. Do you agree with this statement? Use the probability in..
why is it important that a sample be random? for its validity all hypothesis testing depends heavily on the assumption
There is a confidence interval reported in this statement. Explain what it is and what characteristic of the population it is measuring.
jacks game preserve is stocked with 30 moose 25 elk and 45 deer. five years later a sample of animals yields 90 moose
Solve inequality and graph the solution. Please explain how to how to solve this linear graph
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