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Electricity bills in a certain city have mean $124.73. Assume the bills are normally distributed with standard deviation $18.71. Find the value that separate the lower 44% of the bills from the rest.
Standard deviation of 10.6 points. The lower 5% of the class will not get a passing grade. Find the score that separates the lower 5% from the rest of the class.
Calculate Probability of Point Falling Outside Standard Deviation
Using MS EXCEL estimate the likelihood of making a profit from the drilling contracts and Expected value of the drilling contracts to the company. Justify your answer statistically and identify any assumptions you made
1. a study of commuting times reports the travel times to work of a random sample of 18 employed adults in new york
the u.s. dairy industry wants to estimate the mean yearly milk consumption. a sample of 17 people reveals the mean
it is theorized that repetition aids recall and that the learning of new material can interfere with the recall of
question aggregate responses to three questions were obtained from a survey of 100 males and 100 females who were
Find the point estimate of the proportion of college students who smoke. In constructing 95% confidence interval for the proportion of college students.
the economy may be headed for recession. as the manager of a bank you would like to know the average income of the
You take a random sample of 100 pins from the lot supplied by the vendor and test them. You find 8 of them defective. What is the 95% confidence interval for percentage defective in the lot?
the line width of for semiconductor manufacturing is assumed to be normally distributed with a mean of 0.5 micrometer
Random sample of five North American adult is more than 7 hours a day? What is the probability that in random sample of 5 north American adults, all watch television more than 7 hours a day?
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