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Random sample of 60 Twin Cities construction companies to find the information on the costs of their health care plans. The Minnesota Department of Labor reports that historically the mean deductible amount per employee is $502 with a standard deviation of $100.
(a) Compute the standard error of the sample mean for HRC.
(b) What is the chance HRC finds a sample mean between $477 and $527?
(c) Calculate the likelihood that the sample mean is between $492 and $512.
In a survey about satisfaction with local phone service, those respondents who rated their current service as excellent and those who rated it Poor-Very Poor were asked to classify their current local service provider. The results are given in the..
Using the empirical rule, what is the approx percentage of cans of regular coke with weights between 0.80931 lbs. and 0.82433 lbs?
twelve different video games showing substance use were observed and the duration times of game play in seconds are
two electronic components of a missile system work in harmony for the success of the total system. let x and y denote
The probabilities of two events X and Y are 0.4 and o.6 respectively.- What are the conditional probabilities of X and Y occurring, given that A, B or C has already occurred?
What is the probability that the plane will complete its next flight safely?
Ecommerce.com a large internet retailer is studying the lead time (elapsed time between when an order is placed and when it is filled) for a sample of recent orders. The lead times are reported in days
a fair six sided die is rolled 10 times. calculate the expected value of the sum of the numbers observed. then compute
Carry out F test for significance of straight line regression of Y on X and interpret your results.
A national study found that students studied, on average, 15.0 hours. You hypothesize that students at this university study more than the national average. What is your alternate hypothesis? (Assume x represents the University students, and μ is the..
Before computing the correlation, state the null hypothesis and alternative hypothesis in words (not formulas)., Based on the hypotheses you stated, explain whether the researcher should conduct a one-tailed or two-tailed test.
efficacy of a drug. seventy-five 75 people with hypertension were given a new drug for the treatment of their
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