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HR Consulting surveyed a random sample of 74 Twin Cities construction companies to find information on the costs of their health care plans. One of the items being tracked is the annual deductible that employees must pay. The Minnesota Department of Labor reports that historically the mean deductible amount per employee is $502 with a standard deviation of $120.
Compute the standard error of the sample mean
a batch of 50 car batteries is scheduled to be shipped. however the batch will only be shipped if a randomly selected
henry lom feels that the quantity of chocolates in a particular type of packet has decreased. to test this feeling he
the life of a semiconductor laser at a constant power is normally distributed with a mean of 7000 hours and a standard
suppose x is uniform of 0 pi2 and ysinx. find the density function of y. the answer is called the arcsine law because
the mean temp in la is 66.3 degrees f with a standard deviation of 8 degrees f. the temp readings are normally
1. the national snow and ice data center nsidc collects data on albedo depth and physical characteristics of ice
suppose 60 of the people in town will get exposed to flu in the next month. if you are exposed and not inoculated then
What sampling method did you use? Construct a 95% confidence interval for the true population proportion of the SUV's. What sample size would be needed to ensure an error of +/- 0.025 with 95% confidence?
Find the probability that a randomly selected man who has never married is between 35 and 44 years old (inclusive)
a national study has determined that people who work full time average 43.4 hours worked per week. assume that the
you are given 10 multiple choice questions with 5 choices each of which only one is correct. if you try and guess the
how old are college students? the national age distribution for college students is shown below. national age
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