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An electronics store receives a shipment of 37 graphing calculators, including 5 that are defective. Eight calculators are chosen at random to be sent to a local high school. How many selections contain 3 defective?
Compare the two distributions graphically, and then use the two-sample t test to compare the average SATM scores of males and females.
Suppose that 98% of the customers in your market have Internet access, and you select a random sample of 500 customers. What is the probability that the sample has:
Pareto charts. Pareto charts are bar graphs with the bars ordered by height. They are often used to isolate the "vital few" categories on which we should focus our attention. Here is an example
Suppose the systolic blood pressure X and fasting blood sugar Y are jointly distributed as bivariate normal in some population with means 120 and 105, standard deviations 10 and 20, and correlation 0.7. Find the average fasting blood sugar of thos..
the computer-science aptitude scorenbspx and the achievement scorenbspynbspmeasured by a comprehensive final were
Independent Bernoulli trials are performed, with success probability 1/2 for each trial. An important question that often comes up in such settings.
1. List the sample space for the experiment that consists of flipping a fair coin and observing the up face, and then tossing a fair die and observing
Compute the p-value associated with the above sample results, and explain what conclusion can be drawn bases on the p-value?
Using this approximation, determine how many telephone operators are needed to ensure at most 5% busy signals if the mean number of phone
Construct a scatterplot showing the relationship between class load and hours per week employed. Does there appear to be a relationship between the variables?
in a one-tail hypothesis test where you reject h0 only in the upper tail and the p-value is .0228 assuming zstate 2.00
Suppose the scatter plot shows the results of a survey of 4646 randomly selected males ages 2424to 3535. Using age as the explanatoryvariable, choose the appropriate description for the graph.
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