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Chi Square and Anova This exercise has the following two tasks: Task 1: Consider the three samples listed in the table: Inferences from Two Samples A B C 1 0 3 3 6 12 5 2 6 5 3 '2 Obtain the sample mean and the sample standard deviation of each of the three samples. - Obtain total sum of squares (SST,) treatment sum of squares (SSTR,) and error sum of squares (SSE) by using the de?ning formulas and verify that the one-way ANOVA identity holds. - Obtain SST, SSTR, and SSE by using the computing formulas. - Construct the one-way ANOVA table. Task 2: Read the case study titled "Losses to Robbery" and answer the corresponding questions: Losses to Robbery: The Federal Bureau of Investigation conducts surveys to obtain information on the value of losses from various types of robberies. The results of the surveys are published in Population-at-Risk Rates and Selected Crime Indicators. Independent simple random samples of reports for three types of robberies-highway, gas station, and convenience store-gave the following data, in dollars, on the value of losses. Highway Gas Station Convenience Store 952 1298 844 996 1195 921 839 1174 880 Inferences from Two Samples Highway Gas Station Convenience Store 1088 1113 706 1024 953 602 1280 614 What does treatment mean square (MSTR) measure? What does error mean square (MSE) measure? Suppose that you want to perform a one-way ANOVA to compare the mean losses among the three types of robberies. What conditions are necessary? How crucial are those conditions?
For 1989 and 1990 Dave Johnson had the highest decathlon score in the world. When Johnson reached a speed of 32 ft/sec on the pole vault runway, his height above the ground t seconds after leaving the ground was given by h= -16t^2+32t.
Identify the null and alternative hypothesis, test statistic, P-value,critical values and state the final conclusion that addreses the original claim:
That they all had false positive results. Is it unusual to arbitarily choose 3 subjects without replacement and get three results which are all false positive results? Describe.
A microeconomist wants to determine how corporate sales are influenced by capital and wage spending by companies. She proceeds to randomly select 26 large corporations and record information in millions of dollars.
Do the data in the sample represented in the Excel file support his contention at the .05 level of significance?
Nationwide, the average time until a electric utility customer service representative answers a call is 260 second. The Gigantic Kilowatt Energy Company rnadomly sampled 30 calls and found that, on average, they were answered in 227 second with a ..
A marketing poll revealed that 45% of Americans say they that they have dinner regularly as a family. You randomly choose 10 American families and ask if they regularly have dinner together as a family.
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable-one three digit number wins $600 and all others win nothing-that gamblers never reach "the long run".
What is the prediction for Home Price if Square Feet = 2,000? (c) Would the intercept be meaningful if this regression applies to home sales in a certain subdivision?
The number of defective components produced by a certain process in one day has a Poisson distribution with mean 20. Each defective component has probability 0.6 of being repairable.
Prepare an analysis of how you developed your instrument. Be sure to describe how you chose your items, how you would norm this instrument.
What statement can you made by using the rule of three, about the proportion p, of all its computers which are defective?
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