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The weight of a product is normally distributed with a standard deviation of .5 ounces. What should the average weight be if the production manager wants no more than 10% of the products to weigh more than 6 ounces?
The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation with a mean of sigma=15.
a sample of 144 students is taken from a population of 2000 high school students to estimate the proportion of students
Find the pdf of X+Y - Two independent uniform random variables
Make a his-togram of the distribution of these 31 scores. Does your plot show outliers, clear skewness, or other non- Normal features? Using a calculator, find the mean and standard deviation of these scores.
a die is rolled twice. let x denote the sum of the two numbers that turn up and y the difference of the numbers
Determine the probability that a randomly selected exam will have a score of at least 71? What percentage of exams will have scores between 89 and 92?
The parameter of interest is the mean score in this population. The sample is an SRS of size n = 4 drawn from the population. a) Find the mean of the 10 scores in the population. This is the population mean.
Use the list of random digits below to assign 4 men and 2 women to the shark fin treatment. Read the table from left to right, first selecting the 4 men and then the 2 women. Use the numerical labels given in the chart to the names.
Test the claim that the Snickers bars have a mean weight that is different than 20.1 grams. Because shutting down the plant is very expensive, test the claim at the .01 level of significance.
weights of pacific yellowfin tuna follow a normal distribution with mean weight of 68lb and standard deviation 12 lb.a.
Motorola takes two weeks to supply an order. if the store manager is targeting a fill rate of 99%, what safety inventory should the store carry? What should its ROP be?
A political action committee decided to poll its membership to determine if they were in favor of a certain potential law, similar to gun control.
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