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Listed below are measured MPGs from three different categories of vehicles.Vehicle Miles per GallonVehicle Category#1 9.3 9.3 9.3 8.6 8.7 9.3#2 8.7 7.7 7.7 8.7 8.2 9.0 7.4 7.0#3 7.2 7.9 6.8 7.4 6.5 6.6 6.7 6.5 6.5 7.1 6.7 5.5 7.3x bar subscript i s squared subscript i9.91, 8.03, 6.82 .10, .60, .34
Also given that x bar = 7.99
What is the test statistic?Use a 5% significance level (95% confidence level) to test the claim that the different vehicle categories have the same mean MPG.
Faced with rising FAX costs, a firm issued a guideline that transmissions of 10 or more should bw sent by 2-day mail instead. Wxceptions are allowed, but they want the average to be 10 or below.
What characterizes a regular definition (dictionary) and an operational definition? What is the purpose of sampling?
You're designing a survey to assess employee satisfaction. Provide a question that will produce: Develop five demographic questions to measure gender, age, years of experience, level of education, and ethnicity.
Two percent of the parts from a production process are defective. A sample of five parts from the production process is selected. What is the probability that the sample contains exactly two defective parts?
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 ..
The payouts for the Powerball lottery and their corresponding odds arean probabilities of occurrence are shown below. The price of a ticket is $1.00. Find the mean and standard deviation of the payout.
Calculate the correlation and the regression equation and plot the data in the space provided.
Assume that p-value was 0.07, would you reject null hypothesis of equal mean rates for a Type- I error rate of 5%? (Circle one).
During a meeting, one hospital administrator indicated that 70% of the geriatric patients are males. What is the sample proportion of male patients?
Using a present value table, your calculator, or a computer program present value function, answer the following questions. Assistance is needed with the formula to calculate the problems:
At 5 % level of significance, does this sample prove violation of the guideline that average patient muts pay no more than $250 out-of-pocket? Is this a close decision?
How would you communicate this information to the Vice-President of Human Resources in non-statistical language.
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