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The quality control manager at Marilyn's Cookies is inspecting a batch of chocolate chip cookies that have just been baked.
If the production process is in control, the mean number of chips per cookie is 6.0 What is the probability that in any particular cookie being inspected:
What is probability that in any partcular cookie being inspected, there are less than 4 chocolate-chips?
How many cookies on average in a batch of 100 should the manager expect to discard based on company's policy? Round to a whole number
If one invested in Stock A, Determine standard deviation of percentage return?
If probability of getting sample mean x less than unreported sample mean is 0.025, determine value of the unreported sample mean?
You know that all sociology majors study 2.5 hours per day with a standard deviation of 1.
How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? We want 98% confidence that the sample mean is within 2 minutes of the population mean.
Normal distribution has mean of 80 and standard deviation of 14. Find out the value above which 80 percent of values will occur.
Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?
What is the value of the population mean? What is the best estimate of the value?
Find the least-squares regression line for predicting yield from planting rate and add this line to your plot. Choose the correct equation for the least-sqruares regression line.
Biting an unpopped kernel of popcorn hurts! As an experiment, a self-confessed connoisseur of cheap popcorn carefully counted 773 kernels and put them in a popper. After popping, the unpopped kernels were counted. There were 86. a) Construct a 90 ..
Assume a normal distribution applies and alpha = 0.05 (Use Z table), find the Critical value for the alternative hypothesis:
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. What is the value of your test statistic.
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