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The mean weight of 500 students is 151 lbs and the standard deviation is 15 lbs. Assuming the weights are normally distributed, find out how many students weigh between 120 and 155 lbs.
Discuss the fields in which Poisson distribution is applied. Why does it matter whether a population of arrivals is limited or unlimited?
Calculate 95 percent and 99 percent confidence intervals for m. Using the 95 percent confidence interval, can we be 95 confident that m is at least 50 pounds? Explain.
When the level of confidence and sample standard deviation remain the same, a confidence interval for a population mean based on a sample of n = 100
Two events, A and B are equally likely. The chance that either A or B happens on a given trial of an experiment is 0.70, while the chance that they both happen on a given trial is only 0.40.
To obtain the probability that the mean wage of 75 randomly selected workers will exceed $43,000
Using given data table, find out midpoint for class with greatest frequency?
What is the city mileage standard deviation for this SUV model?
How many integers are there between 5 and 14? How Many rational numbers are there between 5 and 14?
The standard deviation of the sample was 6 people. Develop a 95 percent confidence interval for the population mean.
What could Bristol Myers have done to improve the validity of the results after they had mailed the 10,000 surveys and received 1,983 back? Assume they kept record of who had responded and who had not.
A humane society claimes that less than 36% of U.S. households own a dog. In a random sample of 396 U.S. households, 151 say they own a dog. At x=0.04, is there enough evidence to support the society's claim?
The manufacturer of an airport baggage scanning machine claims it can handle an average of 530 bags per hour.
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