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There are four conditions/requirements that must be met in order to perform simple linear regression. For each of the conditions below, choose the technique that should be used to determine whether or not that the condition is met. (Each answer may be used once, more than once, or not at all.)
The probability distribution of ε is normal------?
The mean of the distribution of ε is 0 - or that E(ε)=0------?
A) Create a scatterplot of x vs. y
B) Plot residuals over time
C) Plot a histogram of the residuals
D) Plot residuals vs. y-hat
If Kim expects to use phone for 21 hours per month, which plan must she choose?
Analyze the data using linear contrasts to make the following comparisons:
In addition, record the values for the UCL, center line, and LCL. Also, record any points that are out of control. Use a z-value of three.
At α = 0.01 level of significance, test the hypothesis that these data can be described by a Poisson pdf.
Type the above data into the SPSS Data Editor window, or save this file as an unformatted text file and write SPSS syntax to read it in.
Why is cohort studies more expensive than case-control studies? I know one problem is cohort studies often must be followed up for a long period to determine whether the outcome of interest has developed and they are more expense than case-control..
What is the probability that a randomly chosen employee is an Administrator if the employee has the opportunity of gaining promotion next year?
Evaluate the factor effects. Find out which factors are significant in explaining yield.
A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
The personnel manager at a company wants to investigate job satisfaction among the female employees. One evening after a meeting, she talks to all 30 female employees who attended the meeting.
During the past year, the mean sales of Wshington Reds in cases was 45,000 cases, and the standard deviaiton was 4,450. How many cases of Washington Reds should be brought to market? Assume the sales follow a normal distribution.
Find Probability of independent events.Consider again the auto repair rates described. If you own two cars, what is the probability that.
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