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Find a 95% confidence interval for the true population proportion. In a survey of 193 adults, 21% said that they had tried acupuncture at some point in their lives.
Explain the difference between a discrete and a continuous random variable. Give two examples of each type of random variable.
a couple is getting married on june 20th at an outdoor ceremony. in recent years it has rained only 5 days in june.
Use computer simulation to find the expected value of the payoff. What is the probability that your grand total will be 25 or more points.
x is a normally distributed random variable with a mean of 5.0. find the standard deviation of the distribution if
An advertisement for Cold-Ex claims an 80 percent end-of-treatment clinical success rate for the treatment of flu. Twelve flu patients are given Cold-Ex and are later checked to see if the treatment was successful. Let's assume that the claim ..
the quality control department wants to estimate the true percentage of rework for the electrical components to within
A researcher has a series of Likert-scaled items and a measure of frequency of absenteeism. He uses each of the Likert-scaled items in a separate bivariate correlation with absenteeism without testing for the assumption
A group of teenagers were monitored closely over the period of several weeks to measure how frequently they watched violent television programs.
An advertisement for Citicorp Insurance Services, Inc., claims "one person in seven will be hospitalized this year." Suppose you keep track of a random sample.
Every few years, the National Assessment of Educational Progress asks a national sample of eighth-graders to perform the same math tasks.
martindate were tester which can compare two materials in sigle run, weights losses from seven runs. Examine these data by creating the 90% confidence interval for difference of means. Define your assumption.
There is only one copying machine in the student lounge of the business school. Students arrive at the rate of ?=45 per hour?
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