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At some point too much stimulation will limit the ability to focus and pay attention. What would happen to the size and the sign of the correlation coefficient if we correlated these two variables?
Compute a value V that enables us to state, with 90 percent confidence, that population variance (sigma^2) is less than V.
Standard deviation of this poll is 4%. What would be standard deviation if sample size were increased from 83 to 190?
Over the last year the absentee rate at a large corporation averaged 8.2 days absent with a standard deviation of 6 days. One department with 40 employees had an absentee rate of 12 days per employee.
Select a legitimate sampling strategy and collect at least 30 data points using your created question or topic. Discuss the sampling strategy in sufficient detail so that someone else could repeat your data collection without any difficulties or q..
A company produces two products that are processed on two assembly lines. Assembly line 1 has 100 available hours, and assembly line 2 has 42 available hours.
The final grades for a random sample of MKT 380 students are as follows: What is the standard deviation for these data?
If the standard deviation is $89.46, find the probability that a randomly selected customer spends between $550.67 and $836.94.
Election-day polls are taken from voting precincts selected because they are believed to be representative of all voters.
Assume that the measurements came from a normal distribution. The variability of the manufacturing process is unknown means the same as the standard deviation is unknown.
Just, a case of food poisoning was traced to a particular restaurant chain. The source was identified and corrective actions were taken to make sure that the food poisoning would not reoccur. In spite of the response from the restaurant chain, man..
Either summarize your design or give an appropriate layout with table.
At the 0.05 level of significance, test whether the mean baseline body mass index for the population of middle aged men who develop diabetes is equal to 24.0 kg/m 2 , the mean for the population of men who do not. What is the p-value of the test?
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