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Information from the American Institute of Insurance indicates the mean amount of life insurance per household in the United States is $165,000. This distribution follows the normal distribution with a standard deviation of $40,000.
If we select a random sample of 50 households, what is the standard error of the mean?
What is the expected shape of the distribution of the sample mean?
What is the likelihood of selecting a sample with a mean of at least $167,000?
What is the likelihood of selecting a sample with a mean of more than $155,000?
Find the likelihood of selecting a sample with a mean of more than $155,000 but less than $167,000.
Normal distribution with average 500 and SD 100. A college wants their students to be in the top 12.5% for verbal aptitude. What minimum qualifying score should they set?
A committee of five members is to be randomly selected from a group of nine freshman and seven sophomores. Which expression represents the number of different committees of three freshman and two sophomores that can be chosen?
You take a sample of 22 year-old U.S. citizens, and ask how many foreign countries they have visited.
a search engine site claims that on average one out of five visitors clicks on an ad.a if 8 users visit the site what
Suppose that B1, B2,......... ω ∈ Ω is a sequence of independent events such that for all i, P[Bi] = 1/2. Show that for any n ≥ 1 and for any ω ∈ Ω, we haveP[{ω}] ≤ 1/2n
Make a two-way table of time of day versus answered or not. What percentage of calls were answered in each time period?
If the price of the home is $350,000 before any penalty or bonus adjustment, how much can the buyer expect to pay for her new home when it is completed?
Develop cogent observations about communication practices of Central African Republic and demonstrate what you have learned about organizational
(a) Compute the probability distribution function for P r(x = r), as r = 1..12. (b) Compute µ(x). (c) Compute s(x).
What is the point estimate of the population standard deviation?
According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $11.
If asked to supposes the test statistic was 2.67 how would one calculate the associated p-value?
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