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During a 36 year period, lighting killed 3239 people in the us. Assume that the rate holds true today and is constant throughout the years, find the mean and the probability that no one in the us will be killed by lighting today.
Bob compares his SAT Verbal score of 400 to Marge's ACT Verbal score of 20. "I beat you," he exclaims. "My score is 20 times your score!" Although his multiplication is good, his logic is faulty. Explain why.
Smith bicycled 45 miles going east from Durango, and Jones bicycled 70 miles. Jones averaged 5 miles per hour more than Smith, and his trip took one-half hour longer than Smith's. How fast was each one traveling?
Based on chi-square table, what is the most correct statement which can be made about the p-value for the test?
A company's manufacturing process uses 500 gallons of water at a time. A "scrubbing" machine then removes most of a chemical pollutant before pumping the water into a nearby lake. To meet federal gregulations the treated water must not contain more t..
question 1.the average annual salary for all u.s. teachers is 29863. assume that the distribution is normal and the
Define null and alternative hypothesis and, using sample info. Test manufacturer's claim at 0.01 (1%) level of significance.
Estimating the value of the population mean on the basis of the sample mean alone produces a(n):
What is the probability that the mean annual precipitation during 49 randomly picked years will be less than 101.8 inches?
Create a histogram over five class intervals.
Set up a hypothesis test. Is Charmers' truthful? Describe by working through hypothesis test.
To estimate the mean of the population from sample information, we need to calculate the standard deviation of the distribution of the sample means around the population mean.
A recent study of 75 workers found that 53 people rode the bus to work each day. Find the 95 percent confidence interval of the proportion of all workers who rode the bus to work.
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