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People are selected to serve on juries by randomly picking names from the list of registered voters. The average age for registered voters in the county is µ=39.7 years with a standard deviation of σ=12.4. A statistician randomly selects a sample of n=16 people who are currently serving on juries. The average age for the individuals in the sample is M=48.9 years. How likely is it to obtain a random sample of n=16 jurors with an average age greater than or equal to 48.9?
Draw the scatter diagram. Does it appear that x and y are related? If so, how? Test to determine whether there is evidence of a linear relationship
Morality Study for a group of four men, the probability distribution for the number x who live through the next year is as given in the accompanying table.
Find the critical value for a two tailed F-test with alpha=.05 when the sample size from which the variance for the numerator was obtained was 21 and the sample size from which the variance for the denominator was obtained 12
Calculate correlation coefficient for data below. Compute the equation for regression line if n=7, Ex=69, Ey=528 Exy=4754 and Ex^2=825
A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their lifetime.
22% had both CD players and alarm systems. What is the probability one of these cars selected at random had neither a CD player nor an alarm system.
Estimate with 90% confidence the difference in the level of satisfaction with service between the two branches.
Suppose that this test is given to 1000 students. What is the number of students that are expected to make scores between 170 and 230?
Mean of 950 and a standard deviation of 200. nancy bright's sat score was 1390. what percentage of students have scores more than nancy bright?
As we can say there is 5.5 percent chance of seeing the current policy having an effect on smog in the results we observed from natural sampling variation.
Enter data into SPSS (use two columns: one for coding {0, 1, 2, 3, 4, 5} and one for DV)
A standard deviation of 0.6 miles per gallon, find the probability that a car has a gas mileage of between 28.8 and 29.2 miles per gallon.
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