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For the population of people who suffer occasionally from migraine headaches, suppose that p = 0.60 is the proportion who get some relief from their symptoms by taking ibuprofen.
(a) Let X be the number of individuals in a simple random sample of size 50 from this population who get some relief by taking ibuprofen, and let pˆ be the sample proportion. Find the probability that the value of pˆ is in the interval (0.55, 0.65).
(b) Repeat part (a) assuming that a sample of size 200 is used instead of a sample of size 50.
Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: Gender of employees at a local warehouse.
The mean construction time for a standard two-car garage by Arrowhead Construction Company is 3.5 days. The time for the construction process follows the normal distribution.
Discuss the properties of a normal distribution. Why are there infinite possible normal distributions? Why should one assume that sample data represents a population distribution?
Proportion of college students who prefer drink A: (0.384, 0.424). Identify the point estimate for estimating the true proportion of college students who prefer that drink.
Assuming that the heights are recorded to the nearest half-centimeter, how many of these students would you expect to have heights.
Determine the probability that gas tank's capacity is above 15.25 gallons?
The data are shown below. Generate a 95% confidence interval for the difference in mean HDL levels between men who exercise regularly and those who do not.
She has a history of being successful at getting a donor on 55 percent of her calls. If June has a quota to get at least four donors each day.
Create a 2 X 2 from the information provided and calculate the appropriate statistic to determine the odds of contracting uterine cancer when using estrogen
Employee motivation and its related fields.
Three automobiles are selected at random, and each is categorized as having a diesel (S) or a nondiesel (F) engine (so outcome are SSS,SSF,ect.) If X= the number of cars among the three with diesel engines, list each outcome in S and its associate..
In how many ways can a committee of 6 members be selected from out of these 12? Find the probability that a random committee contains all males?
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