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20% of the US population has heart conditions. Of those, 88.0% are smokers; of those not having a heart condition 26% are smokers. What is the probability that a randomly selected smoker has a heart condition?
Question: A survey found that an American Family generates an average of 17.2 lb of glass garbage each year. Assume that the standard deviation of the distribution is 2.5 pounds. If a sample of 55 families is randomly selected, find the probabilit..
Suppose that 45% of all babies born in a particular hospital are boys. If 8 babies born in the hospital are randomly selected, what is the probability that more
Apply the function plot to the formula that relates the response "frequency" to the explanatory variable "monetary" in order to produce the scatter plot
On a test whose distribution is approximately normal with a mean of 50 and a standard deviation of 10, the results for three students were reported as follows:
Do all three prototypes have the same average range? Construct an ANOVA table, and carry out the test. Explain your results.
Let x be a random variable that represents the percentage of successful free throws a professional basketball player makes in a season.
Estimate demand for the next four weeks using a four-week moving average as well as simple exponential smoothing with a = .01. Evaluate the MAD, MAPE, MSE, bias and TS in each case. Which of the two methods do you prefer? Why?
To forecast attendance at an yearly tennis tournament a model has been developed that uses attendance from the previous year and the amount spent for advertising this year.
a data set consists of 72 test scores. over a long period it has been found that the mean and standard deviation for
Is the death rate observed in the movie crew unusually high?- Does this prove that exposure to radiation increases the risk of cancer?
An election poll reported that a candidate had an approval rating of 48% with a margin of error E of 3%. Construct a confidence interval for the proportion of adults who approve of the candidate.
One card is selected randomly from a standard 52-card deck. a. What is the probability of drawing a club?
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