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A study conduced a few years ago claims adult men spend an average of 11 hours a week watching sports on tv. A recent sample of 100 adult men showed that the mean time they spend per week watching sports on TV is 9 hours. The population standard deviation is given to be 2.2 hours.
a) Test at the 1% significance level whether currently all adult men spend less than 11 hours per week watching sports on tv.
b) Calculate the p-value for this problem and conduct the test using the p-value method.
When estimating a population mean with a confidence interval estimate, then E is:
A bag contains five purple ("P") blocks and one yellow ("Y") blocks. Without looking into the bag you reach in, take out a block, return the block to the bag, and then repeat the same process a number of times. Which of the following sequences of ..
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Suppose a worker needs to process 400 items. The time to process each item is exponentially distributed with a mean of 2 minutes, and the processing times are independent.
Now make a scatter plot of data from 1982 to 1998 (again, use years since 1800). Determine a linear, power, or exponential model that explains the crude oil production during this time period.
It could not do anything with the airport and suffer a loss of revenue. The current value of raised revenue from a new airport is in question.
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