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From the 2008 GSS-the average educational attainment for liberals is 13.90 year Sy=3.27) and the average educational attainment for conservatives is 13.55 years (Sy=2.82). Data are base on 187 liberals and 227 conservatives responses.
a. Test research hypotheses that there is a difference in level of education between liberals and conservatives, set alpha at .01.
b. Would your decision have been different if alpha were set at .05?
Suppose it costs $25 per student for the administrators to provide the course materials.
When combining probabilities, to find the probability of one event AND another event, the separate probabilities should be:
Expalin what would be the appropriate statistical procedure to test the following hypothesis: Triglyceride values are a good predictor of weight in obese adults.
Psychologists wanted to test whether a certain accelerated class' IQ was different than average. There were 25 students in the class; their mean IQ score was 108.
A transatlantic plane carries 140 passengers. It is known that the average weight of all passengers on that plane is 147.14 pounds, that the men on that plane weigh on the average 170 pounds, and women 130 pounds. How many men and how many women w..
Evaluate percentage of households in town with one or more cars; attach standard error to be evaluate. If this is no possible, describe why not.
Consider the following portion of an electric circuit with three relays. Current will flow from point A to point B if there is at least one closed path when the relays are activated. The relays may malfunction and not close when activated.
Expand and aggregate plan using each of the following guidelines and complete the total cost for each plan. Which plan has the lowest total cost.
Standardized measures seem to indicate that the average level of anxiety has increased gradually over the past 50 years. In the 1950s, the average score on the child manifest anxiety scale was µ=15.1. A sample of n=16 of today's children produces ..
Determine the point estimate and 95% confidence interval for the mean family dental expenses of all employees of the company.
The lifetime (hours) of an electronic device is a random variable with the exponential probability density function:
In addition, record the values for the UCL, center line, and LCL. Also, record any points that are out of control. Use a z-value of three.
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