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At a local college, 153 of the male students are smokers and 357 are non-smokers. of the female students, 60 are smokers and 540 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are smokers?
suppose x is a normally distributed random variable with mu 13 and sigma 2. find each of the following probabilities
You have at least $30 in change in your drawer, consisting of dimes and quarters. Write an inequality that shows the different number of coins in your drawer.
For each female/male pair type, construct and interpret a 90% confidence interval for the population mean number of eggs produced by the female spider mite.
Discuss the potential harmful consequences of committing a Type I Error in this situation, and the potential harmful consequences of committing.
The following problem arises in molecular biology. The surface of a bacterium consists of several sites at which foreign molecules-some acceptable and some not-become attached.
What is the estimated probability of an accident in a month at the intersection with a stoplight added?- Would adding the stoplight be a good idea? Explain.
A two-standard-deviation interval is called the margin of sampling error (or the margin of error or the sampling error) by most pollsters.
Suppose that a coin is tossed 3000 times and 1800 heads result. What is the empirical probability that a head will occur with this coin? Is there evidence.
In order to estimate the proportion of families who prefer female baby-sitters to male baby-sitters with an error of at most 8 percentage points and with at least 95 percent confidence, how large a sample should be taken?
a. Using complete sentences, list three things wrong with the way the survey was conducted. b. Using complete sentences, list three ways that you would improve the survey if it were to be repeated.
Jan is a 35-year-old individual who plans to retire at age 65. Between now and then $4000 is paid annually into her IRA account
womens sat math scores in 2007 had the n499110 distribution. what percent of women scored 750 or better? round your
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