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Suppose your manager indicates that for a normally distributed data set you are analyzing, your company wants data points between z = - 0.6 and z = 0.6 standard deviations of the mean (or within 0.6 standard deviations of the mean). What percent of the data points will fall in that range?
Answer: percent (Enter a number between 0 and 100, not 0 and 1 and round to 2 decimal places)
A pharmaceutical company is testing the effectiveness of a new drug for lowering cholesterol. As part of this trial they wish to determine whether there is a difference between the effectiveness for women and for men. At a=5, what is the test valu..
assume that the average annual salary for a worker in the united states is 32500 and that the annual salaries for
Probability the second truck is available is .50, and the probability that both trucks are available is .30. What is the probability neither truck is available?
Construct a boxplot of the dataset - List the number of outcomes in the sample space when you roll both dice.
Does Lavastatin reduce the risk of heart attack? In a Texas Study, researchers gave Lovastatin to 2,325 people, and a inactive substitute to 2,081 people, with an average age of 58. After 5 years, 57 of the lovastatin group suffered a heart attack..
Assuming that these sample data are representative of demand during the year, determine how many loaves of each type of bread should be made such that demand would be met on at least 75% of the days during the year. Create a new variable called To..
What is the probability that it will be handled by Adam? If it turns out that the problem was solved, what is the probability that it was handled by Adam?
trials are performed in sequence. if the last two trials were successes then the next trial is a success with
Explain why researchers do not use random samples. How are they able to generalize their results?
In a regression analysis involving 30 observations, the following estimated regression equation was obtained.
Defective calculator is 10%. If 10 calculators are selected at random, what is the probability that 4 or more of the calculators will be defective?
A random sample of recent LSAT (Law School Admission Test) scores submitted by applicants to a university's law program are as listed below. Using the 0.10 level of significance, apply the Kolmogorov-Smirnov test for normality in examining whether..
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