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An electrician applied for a job in Long Harbour, Muskrat Falls, & Voisey's Bay. According to a local electrical contractor, the probability of getting a job at Long Harbour is 75%, inMuskrat Falls it's 42% and in Voisey's Bay it's 88%. Calculate the probability of:
a) being offered a job in all three locations.b) not being offered a job at all.c) being offered a job in "only one" location.d) being offered a job in "at least" one location.
At Kelsey High School, Mrs. O'brien noted that the students were waiting too long in line for their lunches. After collecting some data, Ms. O'brien determined the mean wait time was 10 minutes.
What is the probability that the sum of their scores exceeds 1200 and probability that the average of the scores of all 400 student
suppose the heights of american men are normally distributed with the mean of 68 inches and standard deviation of 2.5.
What is the z score for a GRE score of 597? What is the percentile rank of this z score and What is the height (in inches) that marks the 75th percentile for this group of officers?
Suppose a random sample of 20 tax returns from small business is examined. What is the binomial probability that at least one tax return involves fraud?
Construct a 98% con?dence interval for the mean change in heart rate. Assume that the population has a normal distribution. Interpret your answer.
the mean duration of television commercials on a given network is 75 seconds with a standard deviation of 20 seconds.
in each case determine whether the study in question is a controlled experiment or an observational study justify your
if you wish to estimate a population mean with a sampling distribution error se0.24 using a 95 confidence interval and
Set up a model to test whether there are differences in mean ... DATA SET E Ages and Weights of 31 Randomly Chosen U.S. Nickels (n = 31 nickels) Nickels
the probability that a small business will go bankrupt in its first year is 0.21. For 50 such small business, find the following probabilities by using either the binomial probability formula or by using the normal approximation.
1.a market research company wishes to find out whether the population of students at a university prefers brand a or
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