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A sample of 15 measurements of the diameter of a shaft gave a mean Xbar=4.38 inches and a standard deviation s=0.06 inch. Find a 95% confidence interval for the population mean of the shafts
Initially the wheel rotates with an angular speed W, causing the block to rise with a linear speed v = 0.33 m/s. Find the moment of inertia of the wheel if the block rises to a height of = 7.9 before momentarily coming to rest.
According to the survey, 37% of the adults are concerned that employers are monitoring phone calls. Use the binomial distribution formula to calculate the probability that:
The number of widgets produced by 9 employees in an eight hour shift is recorded as: 135, 120, 116, 119, 121, 125, 135, 131, 123. What is the median of the number of widgets produced presented above?
given the following data setx 1 3 7 9 13 15y 1 5 8 10 11 13a. find the correlation coefficient.b. using this to predict
He argues that the regression effort says people who perform very poorly in their previous job tend to perform well in their next job. Is this what the regression effect says? Explain.
Your company ships a lot of packages needing quick delivery and short notice. In the past, you have used Speedy Air Delivery Service, but you are beginning to receive complaints from customers who say they are not receiving their packages on time.
a study was conducted to measure the effectiveness of a hypnotism in reducing pain. the measurements are centimeters on
Record the type of research design used. True lab experiment, quasi-experiment, field experiment, or correlation design.
The mean and standard deviation of these scores are 23.0 and 5.0 respectively. The test was administered to 100 students. What is the T-score equivalent to the raw-score 13?
q1 a basketball coach claims that by taking a special vitamin a weight lifter can increase his strength. eight
Give an example of how you may use multiple regression to answer a question related to the impact of leadership change on employee attitudes scores, teambuilding training and performance outcomes.
use the normal approximation to the binomial to determine what is the probability that: 100 or more murder are committed with a firearm? a. 0.452 b. 0.548 c. 0.367 d. 0.164.
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