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On average, the parts from a supplier have a mean of 97.5 inches and a standard deviation of 12.2 inches. Find the probability that a randomly selected part from this supplier will have a value between 85.3 and 109.7 inches. Is this consistent with the Empirical Rule of 68%-95%-99.7%?
suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less
given the situation described identify the type of sampling involved. a local library polls every 9th customer about
The National Collegiate association (NCAA) reported that the mean number of hours spent per week on coaching and recruiting by college football assistant coaches during the season 70.
Men's heights. The distribution of heights of young men is approximately Normal with mean 70 inches and standard deviation 2.5 inches.
Misinterpretations. An advertising agent who created a regression model using amount spent on Advertising to predict annual Sales for a company made these two state- ments. Assuming the calculations were done correctly, explain what is wrong with e..
What percentage of applicants scored below 750
The first three digits of a university telphone exchange are 452. if all the sequences of the remaining four digits are equally likely, what is the probability that a randomly selected universtiy phone number contains seven distinct digits?
There are three types of bread, three types of meat, three types of cheese, and four types of topping. How many different sandwiches can the restaurant make?
Calculate the percent of observations that fall within 1, 2, and 3 standard deviations of the mean. How do these results compare with the 68-95-99.7 rule?
Suppose two contestants independently select prize envelopes on two different days. What is the probability that both win the top prize
A production line manager, J, is trying to design a manufacturing line, using the machines that her company already has. Based on the historical records
After collecting data for 30 days, you plan to construct the control charts.
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