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The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. Random samples of 100 women are randomly selected and the mean of each sample is determined. Find the standard deviation of the sampling distribution.
Also, 77 percent of managers have MBA degrees. Using probability formulas, determine proportion of employees who either have MBAs or are managers.
How large a sample should be taken if the desired margin of error is as shown below (0 decimals)?
The following sample data were obtained from three populations that did not follow a normal distribution. Compute the value of the test stastic. What is your decision on the null hypothesis?
Compute the mean number and median number of apples in a bag.
the cost function of a company depends on an external variable k2k-3c3000012xfind the value of k so that the fixed cost
The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
Determine whether there is a significant difference in mean temperatures in three cities using ONE-WAY ANOVA. Determine whether there is significant difference in mean temperatures.
If employee is chosen at random, determine these probabilities.The Employee smokes, The employees smokes, given that he/she graduated from college.
Identify whether the following variables are numerical or categorical if numerical state whether the variable is discrete or continuous. if categorical state, whether the variable is nominal or ordinal.
Prepare a 2 slide Microsoft PowerPoint Presentation with speaker notes, how to use a z-test to test the null hypothesis and give an example of z-test to test the null hypothesis
Diagnosis tests of medical conditions have several results. The test result can be positive or negative, whether or not a patient has the condition.
A bag of jelly belly candies contains the following colored jelly beans: red (10), blue (2), orange (5), brown (21), green (0), and yellow (18). Construct the probability distribution for x.
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