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A cola dispensing machine is set to dispense 9 oz. of cola per cup, with a standard deviation of 1 oz. The manufacturer sould like to set the control limit in a way that , for samples of 32, 5% of the sample means will be greater than the upper control limit, and 5% of the sample means will be less than the lower control limit.
a) At what value should the control limit be set?
"Values should be inbetween ____ and ____"
b) What is the probability that if the population mean shifts to 8.6, this change will not be detected?
c) What is the probability that if the population mean shifts to 9.7, this change will not be detected?
If the weekly average expenditure of all households is $53,000 but an expert argues that the weekly expenditure is more than $53,000, test his claim at a 5% level of significance and interpret your results.
What would be your recommendation to the local Farm Bureau for estimating the average loss of production per acre, given the data you have at hand?
A sample of 36 packages reveals the mean weight to be 3.01 pounds, with a standard deviation of 0.03 pounds. What is the estimated population mean?
question in a start of the twenty-first century saw many corporate scandals and many individuals lost faith in
Do these data suggest a statistically significance difference between the proportions of drug-resistant cases in the two states? Use a 0.02 level of significance and computed value of 2.37.
Can we conclude a difference in voting patterns for men vs. women? YES or NO (circle one)
National average for 2-year leases is 30,000 miles. Select the suitable hypothesis.
In a study of the effects of stress on illness, a researcher tallied the number of colds people contracted during a six month period as a function of the amount of stress they reported during that same time period.
Find the probability that at least 8 of them started smoking before 18 years of age. According to the Information Please Almanac.
Assuming for a moment that 35% of all Ralph's customers have a discount card, what is the probability of getting a sample proportion at least this big?
a poll was conducted by making random phone calls to people in the united states. 3000 people called agreed to
question previous small study was investigating the total cost of 10 specific items of fruits and vegetables which
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