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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 .
To test is there any significant difference among two proportions. The Damon family owns a large grape vineyard in western New York along Lake Erie.
Find the optimal order quantity and what is the optimal total ordering cost per year vs. what is that cost with the current policy?
The number of items rejected daily by the manufacturer because of defects for last 30 days are:
Assume we have a population of scores with a mean of 975 and a standard deviation of 15. Assume that the distribution is normal. Provide answers to the following questions:
CCI is unable to adjust the mean of the filling process. However, it is able to adjust the standard deviation of the filling process.
In comparing two variances below, determine test value and what are degrees of freedom that must be used?
Findout the value of X using normal distribution which gives standard deviation also mean. A math teacher gives two different tests to measure students' aptitude for math.
The simple random sample is n = 14, σ = 12.5 and the original population is normally distributed.
For a population with a mean of μ = 50 and a standard deviation of σ = 10, how much error, on average, would you expect between the sample mean (M) and population mean for:
If we repeated this procedure many, many times, only 5 percent of the 95 percent confidence intervals would fail to include the mean Math SAT score of the population of all students at this college.
The χ 2 statistic from a contingency table with 6 rows and five columns will have:
It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test specifically that students who study earlier have an average score tha..
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