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1. If 2 people who do not study together take the course described in find:
a. P(2 A's)
b. P(same grade)
c. P(different grades)
d. P(both higher than D)
e. P(both fail)
f. P(one passes and one fails)
2. In a certain city, a fourth of the families take their children to the doctor for regular checkups. Five families are chosen at random.
a. What is the probability that exactly 3 families out of the 5 take their children to the doctor for regular checkups?
b. What is the probability that at most 2 families out of the 5 take their children for regular checkups?
c. What is the probability that more than 1 family out of the 5 take their children?
Mean of 61 minutes and a standard deviation of 9 minutes. Find the proportion of runners who take more than 70 minutes to finish. Draw a sketch to show this proportion.
Explain why the chi-square goodness-of-fit test is not an appropriate way to find out.- What might you do instead of weighing the nuts in order to use a test?
a company employers 800 men under the age 55. suppose that 30 carry a marker of the male chromosome that indicates an
Find the probability that a standard normal random variable will have a value greater than 3.02.- Find the probability that a standard normal random variable will be between 2 and 3.
Company A has just developed a diagnostic test for a certain disease. The disease depicts 1% of the population. The sensitivity of the test is the probability.
Use column percentages, the maximum difference, and measures of association to describe the strength and direction of the association between the type.
one measure of the risk or volatility of an individual stock is the standard deviation of the total return capital
You are asked to conduct a study to determine if gender has any bearing on the choice of a dog or cat as a pet. You take a random sample of 350 adults and ask each what kind of pet they would prefer, a dog or a cat?
A college wants to know the lower limit of a two-sided 95% confidence interval for SAT scores on the Math section (range equals 200 to 800).
The jury may reject Jack Nimble's claim and Allstate Insurance will not be required to pay any damages;
Over the years, projected due dates for expectant mothers have been notoriously bad at a large metropolitan hospital. The physicians attended an in-service program to develop techniques to improve their projections.
Compute the proportion p (hat) for your sample Show your computation. Find a 95% confidence interval for p. What is the margin of error in this confidence interval? What is the meaning of this interval with respect to your data and project?
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