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The weight(in pounds)0f 6 vehicles and the variability of their braking distances 9in feet) when stopping on a dry surface are shown in the table. can you conclude that there is a significant linear correlation between vehicle weight and variability in braking disance on a dry surface? use a=0.01
weight,x 5970 /5370 /6500 /5100/5820/4800
The GMAT scores from a sample of 50 applicants to an MBA program indicate that none of the applicants scored below 450. A frequency distribution was formed by choosing class intervals 450 to 499, 500 to 549, and so on, with the last class having a..
This semester a sample of 55 students revealed an average cost of books of $415 per student. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September 2006.
Nancy believes that the average running time of movies is equal to 140 minutes. A sample of 4 movies was taken and the following running times were obtained. Assume the population of the running times is normally distributed.
Use MegaStat's output for multiple regression to determine the multiple regression equation
a certain model is normally distributed, with a mean of 24 mpg and a standard deviation of 1.0 mpg. find the following: The mileage rating that upper 5% of cars achieve
Testout the significance of the sample correlation also develop regression equation with scatter plot. Calculate chi-square is less than the critical value
Assume that female students' heights are normally distributed with a mean given by µ = 67.2 in. and a standard deviation given by σ = 3.6 in.
Thirty randomly selected students took the calculus final. If the sample mean was 79 and the standard deviation was 8.5, construct a 99% confidence interval for the mean score of all students.
A 90% confidence interval for the mean Math SAT score mu for the population of seniors is what? (Assume the population of Math SAT scores for seniors in the district is approximately normally distributed.
If a filled container of juice is selected at random, what is the probability that it is a nonconforming container? If a filled container of juice is selected at random, what is the probability that it was filled on machine II?
A regional director responsible for business development in the state of pennsylvania is cocerned about the number of small business failures. If the mean of small businsses failures per month is 10,
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