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What is the critical F value for a sample of 21 observations in the numerator and 15 in the denominator? Use a two-tailed test and the 0.02 significance level. (Round your answer to 2 decimal places.)
Which of the following statements isn't a property of the normal probability distribution? Please explain briefly why
The Federal Government is stepping up efforts to reduce average response times of fire departments to fire calls. The distribution of mean response times to fire calls follows a normal distribution with a mean of 12.8 minutes and a standard deviat..
Determine the lowest weight a student can have and still be qualified to enter the school.
Can you determine the number of levels used for each factor? Explain. Describe a treatment for this experiment and determine the number of treatments used.
Suppose the random variable X is normally distributed with mean =50 and standard deviation =7 calculate P(X).
The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting, Inc. during the first quarter of 2004.
The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..
Briefly describe co relational research. Name a variable from this study and one from the workplace that might prove to provide a co relational relationship
Following data from an x bar chart, is the process capable (capability index>1.33)?
A portfolio p of consisting 60% of stock X and 40% of stock Y, has a correlation ρpM = 0.62 with the market. What is the portfolio volatility? Statement on the diversification effect.
The 99% confidence interval estimate for a population variance when a sample standard deviation of 12 is obtained from a sample of 10 items is:
An SRS of 100 of a certain popular model car in 1993 found that 20 had a certain minor defect in the brakes. An SRS of 400 of this model car in 1994 found that 50 had the minor defect in the brakes. Let p1 and p2 be the proportion of all cars of t..
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