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A researcher estimates the 95% CI for a sample with a mean of M = 3.26 and a standard error (?m) of 0.91. What is the upper confidence limit for this interval?
A) 1.48
B) 2.35
C) 4.17
D) 5.04
Independent random samples taken at two companies provide the following information regarding the anual salaries of the employees.
Assume that the population of heights of treated plants is normally distributed with mean. Based on the sample, can it be concluded that is different from centimeters? Use the level of significance. Perform a two-tailed test. Then fill in the table..
does a follow-up reminder increase the renewal rate on a magazine subscription? a magazine sent out 760 subscription
Does your analysis change if the term "average" refers to the mean? To the median? Explain what effect this misinformation might have on the perception of the nation's schools.
Suppose you are working with a data set that is normally distributed, with a mean of 300 and a standard deviation of 44. Determine the value of x from the following information.
a typing competency test yields scores which are normally distributed with a mean of 80 and a standard deviation of 10.
Determine how self confident a person may be. Analysis and Justification. Prepare an analysis of how you developed your instrument.
Linda would like to maintain a 90% service level. what safety stock level do you recommend for BX-5?
What values would be appropriate for the performance measures listed in the preceding problem for the case in which two tellers are available?
An automobile insurance company estimates the following loss probabilities for the next year on a $25,000 sports car:
Iindependently of one another. Two hundred seeds of such a cross are raised, and 142 turn out to be blue-flowering. Are the data consistent with the model?
The lifetime of a disposable water filter is normally distributed with mean equals 30 gal and standard eviation equals 5 gal What is the probability that a filter selected at random will last from 25 gal to 30 gal.
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