# Question

A social worker is involved in a study about family structure. She obtains information regarding the number of children per family in a certain community from the census data. Identify the random variable of interest, determine whether it is discrete or continuous, and list its possible values.

## Answer to relevant Questions

According to the article “Season’s Cleaning,” the U.S. Department of Energy reports that 25% of people with two-car garages don’t have room to park any cars inside. Assuming this to be true, what is the probability ...Of all the trees planted by a landscaping firm, 90% survive. What is the probability that 8 or more of the 10 trees they just planted will survive? (Find the answer by using a table.) Find the mean and standard deviation for the binomial random variable x with n _ 30 and p _ 0.6 using formulas (5.7) and (5.8). a. Use a calculator or computer to find the probability That x _ 3 in a binomial experiment where n =12 and p _ 0.30 P(x _ 3 0 B(12, 0.30)) b. Use Table 5.8 to verify the answer in part a. The probability of success on a single trial of a binomial experiment is known to be .The random variable x, number of successes, has a mean value of 80. Find the number of trials involved in this experiment and the standard ...Post your question

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