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Achievement test scores of all high schoolseniors in a certain state have a mean of 60 and a variance of 64. A random sample of 100 students from one large high school had a mean score of 58. Is there evidence to suggest that this high school is inferior?
The probability of his passing english is 0.8, but the probability of his passing both is 0.6. What should be his estimate of the probability of his passing math?
Assume that male and female births are equally likely and that the birth of any child does not affect the probability of the gender of any other children.
Ffor ten randomly selected employees of a company is = 117 - 1.02x. Predict the job performance rating for an employee whose attitude rating is 55.
Find the probability that a randomly selected student is a nursing major. Find the probability that a randomly selected student is a nursing major given that the student is a male.
Make a pie chart or other indicator that expresses the market position of your fictitious IS business in terms of its top five products or services.
A rare disease has just broken out. Doctor Johnson is trying to help, but while treating patients he might expose himself to the disease.
In terms of p , the researcher should test which of the following null and alternative hypotheses?
"If you took 40 employees at random from the corporation, there is a pretty good chance the average number of days absent would be 12 or more. That's what happened to us-chance variation." Is this a good defense? Justify your answer.
What is the importance of pretesting questions and instruments? What are risks of not doing this? Provide an example
Dr. Walker is an industrial psychologist. She is currently studying stress among executives of Internet companies. She has developed a questionnaire that she believes measures stress.
LINEAR PROGRAMMING MODELS
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship
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