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In a grand jury case, a bookstore was indicted in Oklahoma County on several counts of selling an obscene book. The grand jury was composed of 22 Baptists and 8 other people. The defendant feels that Baptists are biased against free speech. What is the probability that 22 or more Baptists are selected on jury if Oklahoma County is 40% Baptist?
Compute the probability which we will get the sample mean greater than 21; which is , compute P(x > 21). Compute the probability that we will get the sample mean less than 19.385; that is, compute P(x
Does the normal distribution yield a good approximation of the actual results?
Flaws in a certain type of drapery material appear on the average of one in 150 square feet. If we assume the Poisson distribution, give the probability of at most one flaw in 225 square feet.
You are responsible for planning the parking needed for a new 256-unit apartment complex, and you're told to base the needs on the statistic "average number of vehicles per household is 1.7."
Develop a probability tree showing all marginal, conditional, and joint probabilities and develop a joint probability table.
Comparing the response times between 2 cab companies. companies A and B were each called at 50 randomly selected times. the calls to company A were independently made from the calls to company B. company A had a mean response time of 8.5 minutes with..
Suppose an appliance manufacturer is doing a regression analysis,using quarterly time-series data, of the factors affecting its sales of appliances.
The heights of children 2 years old are normally distributed with a mean of 32 inches and a standard deviation of 1.5 inches. Pediatricians regularly measure the heights of toddlers to determine whether there is a problem.
A normal distribution with a mean of 60,000 miles and a standard deviation of 5,200 miles. What percent of the tires will last at least 75,000 miles?
what is the probability that the sample mean of IQ scores will not differ from the population mean by more than 2 points? (Round your answer to four decimal places.)
If the probability of a newborn child being female is 0.5, find the probability that in 100 births, 55 or more will be female. Use the normal distribution to approximate the binomial distribution.
Calculate and interpret standard error of estimate se and coefficient of determination R2 for these data.
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