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Question: Scores are obtained from the Law School Admission Test (LSAT) are normally distributed with a mean score of 550 and a standard deviation of 110.
a. If a test score is selected at random, find the probability that it is less than 750.
b. 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.
Winnipeg during rush hour are occupied by just the driver. If you choose 12 vehicles at random, what is the probability that 7 or more carry just the driver?
Regression analysis works with the basic formula of a line, which is Y = mX + b. We can use it to look at causation. Think about the Lemonade Stand Game.
A film alliance used a random sample of 50 U.S. citizens to estimate that the typical American spent 78 hours watching videos and DVDs last year. The standard deviation of this sample was 9 hours.
If the standard deviation of the amount of coffee dispensed is 0.4oz and the amount of coffee dispensed is normally distributed.
The following frequency table determine the ages of 100 shoppers at the local grocery store. Compute the sample mean for this data (mean for the grouped data).
You create a 95% confidence interval for your average score and it is (76.347, 79.133). Given this information, what is the best conclusion?
What can you conclude from chebychev's theorem about the percentage of adults in the town whose heights are between 59.7 and 72.9 inches? Show all work.
A random sample of 60 days shows that the mean daily number of gallons sold is 10.00. What is the point estimate of the population mean?
The owner of a mail-order catalog would like to compare her sales with the geographic distribution of the population. According to the United States Bureau of the Census
Use normal approximation to determine probability that x = 2. Illustrate all work.
drcatscan is an ophthalmologist who in addition to prescribing glasses and contact lenses performs laser surgery to
How do you verify that the assumption of a normal distribution is correct if you've only the mean and standard deviation?
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