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Question: The distribution of the SAT scores in math for an incoming class of business students has a mean of 590 and standard deviation of 22. Assume that the scores are normally distributed.
a. Find the probability that an individual's SAT score is less than 550.
b. Find the probability that an individual's SAT score is between 550 and 600.
c. Find the probability that an individual's SAT score is greater than 620.
d. What percentage of students will have scored better than 700?
e. Find the standardized values for students scoring 550, 600, 650, and 700 on the test.
Which gives me 39.5 people. That is the way that my book figured it out for 10 people. I just did to the 50th power instead of to the 10th power. Am I not doing it correct?
Find a 95% confidence interval for the population proportion of males who do not donate blood who have heart disease.
Compute a 90% confidence interval for the population mean, based on the sample 25, 27, 23, 24, 25, 24, and 59. Change the number from 59 to 24 and recalculate the confidence interval.
a student team in a business statistics course wanted to determine if there was a difference in average download times
Much attention has recently focused on the incidence of concussions among athletes. Separate samples of soccer players, non-soccer athletes, and non-athletes were selected.
Find the standardized z-statistics for P^ =.20 and P^ =.33.- Draw a picture of the sampling distribution of P^, and identify where P^ =.20 and P^ =.33 fall on the picture.
Why do you think that though the Paris Peace Conference in 1919 and subsequent Treaty of Versailles had brought to a close the Great War,the end result of the negotiations involved in the treaty did not satisfy any party involved?
in an assembly-line production of industrial robots gearbox assemblies can be installed in one minute each if holes
Customers arrive at a two-server system according to a Poisson process having rate λ = 5. An arrival ?nding server 1 free will begin service with that server.
For the normal distribution described in given Exercise, what first-mortgage amount would have been exceeded by only 5% of the mortgage customers?
State a question that can be answered in a "binomial" manner, such as Do you normally read the front page of a newspaper at least 4 times a week?
when a population mean is compared to to the mean of all possible sample means of size 25 the two means area. equalb.
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