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A poll found that 38% of male voters and 46% of female voters support a particular candidate. To test whether this candidate has equal levels of support between male and female voters, the null hypothesis should be
a) . H0 : pmale =pfemale b) . H0 : pmale =50 % , H0 : pfemale= 50 %c) . H0 : pmale =38 % , H0 : pfemale= 46 % d) H0 : pmale <pfemale .
In the Distance problems, the kids are given a Rate (speed) that a vehicle is going, as well as a Time that the vehicle travels, and asked to calculate the Distance travelled. In the Rate problems they are asked to compute Rate from the other two ..
Be sure to include information about how you would use the concept of probabilities to apply to profiles for hiring more satisfied individuals.
Determine the upper and lower control chart limit and the lower control chart limit for various values of the fraction defective (p) in the sample taken. Assume a 99.7 % confidence.
The ages of circulating pennies are right skewed. Most circulating pennies were minted relatively recently, and extremely old pennies are rare. Assume the ages of circulating pennies have a mean of 12.2 years and a standard deviation of 9.9 years.
To demonstrate the process is in control or out of control utilizing p-chart. A company which produces nails has retained you as a consultant.
What is the probability of randomly selecting a male from this group?
Use value you found in part a to find out degree of confidence for interval 65.65
What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 5 of µ? Use the value 20 for the population standard deviation of scores on this subsection.
The machine will stop working if more than three components fail. Find the probability that the machine will be working.
I have fit a line to data representing cholesterol readings for 28 individuals starting a cholesterol reducing drug. The computer provides the following output, The degrees of freedom for the t test for the slope are
What is the approximate probability that the combined weight of 25 items exceeds 445 ounces? What theorem is useful in answering this question?
A produce manager wants to estimate the mean size of coke bottle fills with 95 percent confidence. A preliminary sample of 12 bottles shows a sample standard deviation of 3 mil, and mean of 500.
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