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A random sample of 20 patients in a weight loss clinical trial lost an average of 25 pounds over an 8 week period. The sample standard deviation is 10. What is the 95% confidence interval for the weight loss for all patients included in the weight loss clinical trial?
Your friend tells you that the proportion of active Major League Baseball players who have a batting average greater than .300 is greater than 0.56, a claim you would like to test. The hypotheses for this test are Null Hypothesis: p ≤ 0.56, Altern..
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.
The director of admissions at a large university advises parents of incoming students about the cost of textbooks during a typical semester.
The casino game craps is based on rolling two dice. Here is the assignment of probabilities to the sum of numbers on the up face when two dice are rolled:
Use a .10 level of significance to test the claim that the variance of all scores in the population is more than 9.
Can you determine the number of levels used for each factor? Explain. Describe a treatment for this experiment and determine the number of treatments used.
Construct a 99% confidence interval estimate for the population mean amount of paint included in a 1-gallon can.
Work through a simple regression calculation using intrinsic job satisfaction nd extrinsic job satisfaction. Select thirty data points to use for each group.
A student team examined parked cars in four different suburban shopping malls. One hundred vehicles were examined in each loation.
Assume that the master budget for Cannondale shows total variable expenses of $10,000. The budget was based on production of 5,000 units. Cannondale sells all units it produces.
Determine the probability that no more than 10 firms are perfectly competitive?
Compute the mean and variance of the following discrete probability distribution.
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