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An investigation of the effectiveness of a training program to improve customer relationships included a pre-training and post-training customer survey. Seven customers were randomly selected and completed both surveys. The results follow.
For a 0.10 significance level, what is the critical value?
suppose you are interested in bidding on a piece of land and you know that one other bidder is interested. the seller
In studies examining the effect of humour on interpersonal attraction, McGee and Shevlin (2009) found that an individual's sense of humor had a significant effect on how the individual was perceived by others.
Assume the population standard deviations are the same. At the .10 significance level, can we conclude that the annual rates of return are higher on the big board?
a student has submitted a concrete cylinder to the strength contest in engineering open house. suppose the strength of
the genes for eye color in a certain male fruit y are r w. the genes for eye color in the mating female fruit y are r
In the Willow Brook National Bank waiting line system (see Problem 1), assume that the service times for the drive-up teller follow an exponential probability distribution with a service rate of 36 customers per hour or 0.6 customer per minute.
a random sample of 70 needles was taken from a medical manufacturing facility and 24 were found to be defective.
the time it takes a cell to divide called mitosis is normally distributed with an average time of one hour and a
What assumptions must you make in order to use these statistics for inference? Explain in context what this confidence interval means.
At one university, students are given z-scores at the end of the semester rather than the traditional GPAs. The mean and standard deviation of all students’ cumulative GPAs, on which the z-scores are based, are 2.7 and 0.5 respectively.
What is the difference between the null and alternative hypothesis statements in one tailed and two tailed tests? How can manufacturing companies use the standard normal distribution to determine quality control of their products?
q1. during the previous presidential elections in the united states very long wait times have been witnessed at
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