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Let X be a normal distributed random Variable with u=100 and o=10. the probability that X is between 70 and 100 is:
a. 8%
b. 84%
c. 95%
d. answer not listed
Do any of the selected samples seem to be out of the control limits? Describe.
Hits on a personal web site occur quite infrequently. They occur randomly and independently with an average of five per week.
The winning team's score in 13 high school basketball games was recorded. If the sample mean is 54.3 points and the sample standard deviation is 11.0 points, find the 98% confidence interval of the true mean.
If alpha level is changed from a = 0.05 to a = 0.01. What occurs to boundaries for critical region?
Illustrate what amount of sales would be required to be a super savings club member. Elucidate amount of sales would be required to be a gold club status.
Find the relative risk for moderate beer drinkers as compared to nondrinkers, finds the 95% confidence interval
A survey covering 0 different suburbs in Dallas found the average price of gasoline to be $3.924 per gallon with a population standard deviation of $0.053. What critical value shoiuld be used to test the claim using a = 0.01?
The following data show levels of fertilizer use (lbs) and wheat yield (bushels) on repeated trials on a six acre plot.
Compute the unit manufacturing cost of the product under the contribution approach. Compute the effect on net income of accepting a special order for 500 units at $10 per unit assuming excess capacity.
You are given the following frequency distribution for the number of errors 55 students made in a test:
By using the normal distribution to approximate the desired probability.
Suppose normality, determine a 90% confidence interval for population variance.
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