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The 2006 General Social Survey asked, "what do you think is the ideal number of children for a family to have?" The 1097 females who responded had a median of 2, mean of 3.16, and a standard deviation of 1.91.
a) What is the point estimate of the population mean?
b) Find the standard error of the sample mean.
c) The 95% confidence interval is (3.05, 3.28). Interpret.
d) Is it plausible that the population mean μ = 2? Explain
The p-value for a test statistic is .085, what is the minimum level of significance required to reject the null hypothesis?
What would that evaluation be and what is the margin of error?
As part of their application for a loan to buy Lakeside Farm, a property they hope to develop as a bed-and-breakfast operation, the prospective owners have projected:
Determine the probability that a randomly selected teacher earns more than $525 per week?
A large population of overdue bills has balances that follow a normal curve. When we take a sample of 100 of these the average is $500 and the SD is $100.
The level of glucose, x, in blood follows a normal distribution with mean = 13.8, and std dev = 2.6. What is the probability that in a healthy adult:
Flaws occur in the interior of plastic used for automobiles according to a Poisson distribution with a mean of 0.02 flaws per panel. If 50 panels are inspected, what is the probability that the number of panels that have one or more flaws is less ..
A simple random sample of 50 adults is obtained, and each person's red blood cell count (in cells per micro-liter) is measured. The sample mean is 5.23. The population standard deviation for red blood cell counts is 0.54.
Define the rejection region. State the statistical decision.
Provided that the selected student excels in sports, determine the probability that the student is a boy?
What are the odds against drawing a card from an ordinary deck of cards and getting a spade?
The objective is to maximize the expected net return. Define the optimal value function and give the optimality equation. Find the optimal policy.
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