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The U.S. Bureau of Labor statistics reports that of persons who usually work full time, the average number of hours worked per week is 43.4. Assume that the number of hours worked per week for those who usually work full time is normally distributed. Suppose 12% of these workers work more than 48 hours. Based on this percentage, what is the standard deviation of number of hours worked per week for these workers?
Confidence Intervals around a Population Parameter Never preferred but is accepted as a Trade off for cost and/or time. Dataset Accuracy Confidence Example Preference?
The manufacture of the X-15 steel belted radial truck tire claims that the mean mileage the tire can be driven before the tread wears out is 60,000 miles.
in a dice game if a players rolls a 5 or a 7 she wins 10.00. if she rolls a 9 she wins 5.00 .. the cost to play the
find the mean and standard error of the sample means that is normally distributed with a mean of 10 and a standard
in a study of 299188 cell phone users it was found that 97 developed cancer of the brain or nervous system. assuming
question a researcher wishes to estimate the average amount of money that a person spends on lottery tickets per
The Minitab output for the Tukey Least Significant Difference multiple comparisons is below. Which means are different and similar
The Dean is hanging his head in shame. He realizes his failings in designing an adequate research design to assess the effects of the move on majors and has revised the proposal.
What is the probability winning a contract to build either the school or the hospital? The school only? The hospital only?
Using Microsoft Excel, create a correlation analysis of Wal-Mart's annual net income over the past 10 years compared with Sears's annual net income over the past 10 years and interpret the results.
What is the probability that no more than two of the three are commercial successes?
how many different linear arrangements are there of the letters a b c d e for whicha a is last in lineb a is not last
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