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Find the margin or error for the 95% confidence interval used to estimate the population proportion. In a survey of 7100 TV viewers, 38% said they watch network news programs.
Can we infer from these data that there is a positive linear relationship between the value of the fund and the price of gold - Mutual funds minimize risk by diversifying investments they make.
A student scores 81 on a chemistry test and 75 on a history test. For the chemistry test, the mean was 70 and the standard deviation was 20. For the history test, the mean was 65 and the standard deviation was 8.
What is the chance? students over age 21 students under age 21 Why is your sample not an SRS? These combinations of students have equal chances of being interviewed.
The standard deviaiton is 2 pounds. If 15% of the suitcases are overweight, find the maximum weight allowed by the airline. Assume the variable is normally distributed.
A digital camcorder repair service has set a goal not to exceed an average of 5 working days from the time the unit is brought in to the time repairs are completed. A random sample of 12 repair records showed the following repair (in days)
If a filled container of juice is selected at random, what is the probability that it is a nonconforming container? If a filled container of juice is selected at random, what is the probability that it was filled on machine II?
Find the P value or an interval containing the P value for the sample test statistic.
30% of the college of business students major in finance. A random sample of 20 students is selected. What is the probability that no more than 3 students of the selected students are majoring in finance?
A random sample of 15 paired observations has a correlation of -.46. Can we conclude that the correlation in the population is less than zero? Use the .05 significance level.
Give a brief definition and an example of the following: What does the correlation coefficient r describe? What about r squared?
Discuss why the nonparametric test was used. In order to do this, you will need to state. What was the Dependent Variable (DV) and at what level was it measured. What was the Independent Variable (IV) and at what level it was measured
Effect of a new training program on time taken to complete a task, measured by a "before" and "after" test
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