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From family background, it is known that with probability 1 2 a woman is a carrier of haemophilia. If she is a carrier, then with probability 1 2 her male offspring will have the disease. If she is not a carrier, then her male offspring will not inherit the disease. Suppose the woman has a son who does not have the disease; what is the probability that she is a carrier (to one decimal place)?
What is the probability that the average sales are really $36,000 or less per day? Assume the actual population average is $40,000 per day
Perform a complete test of hypotheses to determine if there is evidence to claim the tires produced by Machelin wear out too fast. Include a P-value with the test.
A researcher wants to determine a 95% confidence interval for the mean number of hours that UMKC students spend doing homework per week.
Feeling sleepy? The first four students to arrive for a first-period statistics class were asked how much sleep (to the nearest hour) they got last night.
in a poll taken in march of 2007 gallup asked 1006 national adults whether they were baseball fans. 36 said they
To find out the probability that the age of a randomly selected CEO. The average age of CEOs is 56 years. Suppose the variable is normally distributed.
Causes of variation in the time to respond to an application. The personnel department of a large company records a number of performance measures.
a binomial probability experiment is conducted with the given parameters. compute the probability of x successes in the
A sample of eight male professionals has an average yearly salary of $52,165. Find the average yearly salary for the 11 people.
every normal model is defined by its parameters the mean and the standard deviation.suppose that the mean ? 20 and that
Predict with 95% confidence the test score at a school where 50% of the mathematics teachers have mathematics degrees, the mean age is 43, and the mean annual income is $48,30.
Grading managers Many companies "grade on a bell curve" to compare the performance of their managers and professional workers.
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