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AThe manager hires you to analyze the data she collects and the results for the above questions are as follows:
Agree
Disagree
No Opinion
Satisfied with Position
23
8
4
Desiring More Weekly Hours
26
2
7
Conduct the Chi-Square goodness of fit hypothesis test at a 5% significance level to determine if her employees are satisfied with their position.
a score that is 6 points below the mean corresponds to a z- score of z -0.50. what is the population standard
Research has shown that the people often see a correlation between two events when one does not really exist. Why do you think this happens?
Determine the centerline and the upper and lower control limits for a 3-sigma mean control chart in which each sample consists of 4 cylinders
The table given below shows joint probability distribution of X and Y . Determine the covariance between the X and Y ?
In a multiple regression equation two independent variables are considered, and the sample size is 25. The regression coefficients and the standard errors are as follows.
Do these results suggest that the different therapies have different effects on mental health? (Use the .05 level.) a. Use the five steps of hypothesis testing.
Let X 1 , X 2 , ... , X n be a random sample from the distribution with probability density function f(x; Θ) = [Θ / 2sqrt(x)] * e^[-Θsqrt(x)], x > 0 , Θ > 0. What is the probability distribution of sigma notation from i = 1 to n (sqrt(Xi))?
Which component of a time series is most likely to occur? Which component has a pattern that must be complete in a single year and repeat from year to year?
1. develop numerical summaries of the data2. use regression analysis to develop an estimated regression equation that
What is the P-value of the test, assume the standard deviation is 3 years, a 95% confidence interval for the average time
In this problem we want to run a test of goodness of fit to check whether the coats in the consignment follow the indicated probabilities.
Illustrate the regression model and predict it. The following table shows the yearly maintenance costs for several cars, as well as their age.
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