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When performing a chi-square test for independence, explain how the "cell frequencies under the independence assumption" are calculated. For what purpose are these frequencies calculated?
Given that both balls selected are white what is the probability that bowl 3 was selected?
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level. State the decision rule.
Would you conclude that your data set is approximately normal? If so, what percentage of your data values lie:
Determine the value of the finite population correction factor if population size is 1000 and the sample size is 300? What is the smallest sample size for which finite population correction factor must be Used?
A population of scores has p = 44. In this population, an X value of 40 corresponds to z = - 0.50. What is the population standard deviation.
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
The standard deviation of grade points was 0.65 and the mean was 2.89. The standard error for the sample was
Use the following data to write the normal equations of the linear regression between Y and X, and find the least squares regression.
What is the probability she received 5 or more email during the same period?
Martin Motors has in stock three cars of the same make and model. The president would like to evaluate the gas consumption of the three cars (labeled car A, car B, and car C) using four different types of gasoline. For each trial, a gallon of gaso..
If statistically significant, do you believe the difference is large enough to be significant? If so, to whom, and explain why? Is normality assumption fulfilled? Describe.
Suppose that distribution is normally distributed. If worker at this fast food restaurant is chosen at random,determine the probability that worker earns more than $6.75?
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