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1) When we say we have confidence level of 95% what do you believe our "margin of error" is?
2) If we move level of confidence from 95 to 99%, what will occur to our margin of error? What will occur to width of our confidence interval?
3) Would we have got better feel for amount of flour required if we'd used larger sample? Why (mathematically) would this occur?
4) President of American insurance Institute wishes to compare yearly costs of auto insurance offered by two leading companies. He chooses a sample of 15 families some with only single insured driver, others with many teenage drivers, and pays each family a stipend to contact two companies and ask for price quote. To make data comparable, certain features, like the deductible amount and limits of liability, are standardized. Sample information is reported below. At 0.10 significance level, can we conclude that there is difference in amounts quoted?
Family
Progressive Car Insurance
GEICO Mutual Insurance
Becker
$2,090
$1,610
Berry
1,683
1,247
Cobb
1,402
2,327
Debuck
1,830
1,367
DuBrul
930
1,461
Eckroate
697
1,789
Oennan
1,741
1,621
Glasson
1,129
1,914
King
1,018
1,956
Kucic
1,881
1,777
Meredith
1,571
1,375
Obeid
874
1,527
Poice
1,579
1,767
Phillips
1,677
1,636
Tresize
860
1,188
Find the probability of exactly 6 Mexican-Americans among 12 jurors.
This model is fit to the data using the method of least squares using statistical software, and the following ANOVA table is obtained
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
If he selects the three brands at random, what is the probability that he will select the following?
Find the probability that the driver was intoxicated or the pedestrian was not intoxicated?
What is the probability that the first two cards dealt yields "Black Jack"?
The standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the sample was
Beta and required rate of return stock has required return of 11%; risk-free rate is 7%t; and market risk premium is 4 %. Determine the stock's beta?
Analysis of data sets assignment
Assume that the following four examines were tested as part of a large group that had a normally curved distribution.
The American Automobile Association checks the prices of gasoline before many holiday weekends.
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