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Scores are obtained from the Law School Admission Test (LSAT) are normally distributed with a mean score of 650 and a standard deviation of 120.
1. If a test score is selected at random, find the probability that it is less than 700.
2. If the top 15% of the test scores are usually good enough for admission to law school, find the cut off score for gaining admission.
Suppose it costs $25 per student for the administrators to provide the course materials.
Utilizing the .05 level, do the results support the psychologists' theory. A psychologist theorized where people can hear better when they have just eaten a large meal.
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? Compute the value of the test statistic.
If a six appears for the second time, the process is repeated with the move depending on the number shown and the previous throws. If a six appears for the third time, the turn of the player ends without moving the token.
Determine margin of error for confidence interval in (a)?
Formulate an appropriate hypothesis test to examine at the 10% level of significance whether the manager's worries are justified.
To test this notion, eight paid volunteers were placed (individually) in a room in which there was no light from the outside and no clocks or other indications of time.
Explain distribution of sample means (shape , Expected value , and standard error ) for samples of n=36 selected from population with a mean of m =100 and standard deviation of s=12.
Is the school district correct in assuming the girls are equal in performance to boys. They are 95% sure their assumption is correct.
Let x = number of the ball obtained on any selection. Then the probability distribution for x is given by:
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
Below are the sample times in minutes. At the .05 significance level, can we conclude that there is a difference in their mean times?
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