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Question: 1. Based on a sample of 100 individuals, the values 1, 2, 3, 4, 5 are observed with relative frequencies 0.2, 0.3, 0.1, 0.25, 0.15. Compute the mean, variance and standard deviation.
2. Fifty individuals are rated on how open minded they are. The ratings have the values 1, 2, 3, 4 and the corresponding relative frequencies are 0.2, 0.24, 0.4, 0.16, respectively. Compute the mean, variance and standard deviation.
What is the probability that the smoker quit after six months?- Suppose the smoker quit smoking after six months. What is the probability that she tried e-cigarettes?
Based on the equation of the least-squares line, we use software to predict the average number of home runs hit per game per team for the year 2001. We obtain the following.
What is the net income of SouthCo if unit sales are twice the break-even point for a given month?
Create a new dataset that can be used with the between subject design. You will no longer need the variables CreativePre and CreativePost Test. Instead, you will have only one variable for the score on the creativity test.
it is common practice in many countries to destroy shred refrigerators at the end of their useful lives. in this
A fair die is rolled twice, with outcomes X for the first roll and Y for the second roll. Find the moment generating function MX+Y (t) of X + Y.
The population standard deviation was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval for the population mean?
A sample of 100 orders revealed that 82 were delivered within the promised time. At the .10 significance level, can we conclude that less than 90 percent of the orders are delivered in less than 10 minutes?
dole pineapple inc. is concerned that the 16 ounce can of sliced pineapple is being overfilled. the quality control
How many degrees of freedom are associated with the deviations from the sample means in the combined data set? Explain.
Unfortunately, it is nearly impossible to split a candy bar exactly in half since the break point is effectively random. Let X be the weight of your part and Y be the weight of your friends part. What is the correlation between X and Y?
Find the mean for the given sample data. Unless otherwise specified, round your answer to one more decimal place than that used for the observations.
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