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An industrial psychologist is investigating the effects of work environment on employee attitudes. A group of 40 recently hired sales trainees were randomly assigned to one of 10 different "home rooms" - four trainees per room. Each room is identical except for wall color, with 10 different colors used. The psychologist wants to know whether room color has an effect on attitude, and, if so, wants to compare the mean attitudes of the trainees assigned to the 10 room colors. At the end of the training program, the attitude of each trainee was measured on a 100-pt. scale (the lower the score, the poorer the attitude). How many treatments are in this experiment?
Community college spends each year. If she wishes to be 90% confident, how large a sample is necessary if the standard deviation is known to be $80?
Use Random Number Generation (RNG) in Analysis ToolPak of Excel to generate n = 5 observations from the Normal distribution N(20, 5). Construct the 95% confidence interval for μ.
For a two-tailed test of hypothesis (.01 significance level) to determine if there is a difference in the population means, the degrees of freedom are
Nielsen publishes a weekly ranking of television programs as well as a weekly ranking of four major networks: ABC, CBS, NBC, and Fox. What kinds of decision or actions are based on the Nielsen rankings?
Compute the value of the proportion of the population.
Comparison of paired and unpaired samples test - Prepare a brief conclusion statement summarizing your results. What can you tell this MHMR about client satisfaction? What could you suggest they do to improve?
Given following financing project being considered by venture film, determine critical path probability of completion by 17 weeks.
Using the probabilities above what is the expected size of family you draw?
30 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.
Estimate the true mean price for this particular model with 95% confidence?
In a random sample of 225 students at a university, 180 stated that they were nonsmokers. Based on this sample, compute a 95% confidence interval for the proportion of all students at the university who are nonsmokers.
Estimating the individual score using normal distribution and find the minimum SAT score needed to be accepted?
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