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A psychologist is interested in knowing whether adults who were bullied as children differ from the general population in terms of their empathy for others. On a questionnaire designed to measure empathy, the mean score for the general population is 95.71. Random sampling of 76 scores obtained from individuals who were bullied yielded a mean of 75.37 and a standard deviation of 22.87.
Suppose you want to calculate the 99% confidence interval.
What is the MEAN that you will use for this calculation?
you have made calculations to test scores from 50 students are from a normal distribution. you calculate the mean score
suppose y1 through y21 is a random sample from the population with the following density function fy 3y2theta3 0 is
A particular telephone switch handles only automated junk voicemail calls that arrive as a Poisson process of rate λ = 100 calls per minute. Each automated voicemail call has duration of exactly one minute.
Calculate the correlation of the numbers shown in the part a table by using a computer or statistical calculator.
How much does she need to place in a saving account today that earns 9.66 percent per year (compounded quarterly) to accumulate this amount?
For the data in Table, perform the paired T test for means using the weights for the east and south sides of the trees. Verify that the p-value is 0.09.
What was the highest score earned on the exam? According to Chebyshev's Theorem, how many students scored between 42 and 74?
What is the probability that exactly two eastbound trains will arrive in the first 24 minutes and exactly three eastbound trains will arrive in the first 36 minutes?
a. What is each country's opportunity cost of producing gloves and hats? b. If the countries could, should they trade? Provide one (1) supporting fact to support your position.
Design a circuit based on the topology of the noninverting amplifier to obtain a gain of +1.5 V/V, using only 10-kΩ resistors. Note that there are two possibilities. Which of these can be easily converted to have a gain of either +1.0 V/V or +2...
Show your work (either your hand calculations or your statistical program output). You can either scan your work and submit it as a low-resolution graphic, type your answers directly into the document, or cut and paste your work into a Word file.
Describe each set of data with a histogram (use the same class intervals on both histograms) the mean, standard deviation.
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