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Recently, a university surveyed recent graduates of the English Department for their starting salaries. Four hundred graduates returned the survey. The average salary was $25,752. The population standard deviation is $2,553. What is the 95% confidence interval for the mean salary of all graduates from the English Department?
in class we discussed what fraction of 7-foot or taller males of an appropriate age play in the nba. this exercise
How many students would be required to estimate the proportion of students who consume coffee? Suppose we want the estimate to be within 5% of the true proportion with 95% confidence.
an article in the journal of the environmental engineering division distribution of toxic substances in rivers 1982
use the following table to answer the questions. give your answers correct to two decimal places.x 1 1 3 3
at mikes auto service the mean time to diagnose a problem is 30 minutes with a standard deviation of 8 minutes. the
Develop forecasts for the years 6 through 13 using a 5-year moving average and Weight the most recent year by 6, the previous year by 4, the year before that by 2, and the other years by 1.
What is the likelihood that none of the selected flights arrived within fifteen minutes of scheduled time?
a real estate agency wants to compare the appraised value of single-family homes in two travis county communities. a
jacks game preserve is stocked with 30 moose 25 elk and 45 deer. five years later a sample of animals yields 90 moose
Differentiate both sides of the equation from part (a) with respect to x to obtain:
a suppose that a newspaper in wisconsin wants to take a statewide survey concerning state budgetary issues. the
I tossed a coin 6 times and recorded the outcomes - H for heads and T for tails. The first set of tosses yielded HTHTTH and the second set of tosses yielded TTTHHH. Which set of tosses is more probable to happen? And why?
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