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For the z-score equation, if given the standard deviation as well as "n", how do we know whether to make the standard deviation in the denominator = 'standard deviation/root(n)" or just "standard deviation"?
Based on an SRS of 50 pineapples with a mean weight of 31.6 ounces, did the new irrigation system cause an increase in the mean weights of pineapples produced? Explain your answer completely.
How many of the 15 students would you expect to correctly identify Coke or Pepsi? What is the probability that exactly 10 students surveyed will correctly identify coke or Pepsi.
Based upon all of this information, do a "goodness-of-fit" test to see if the distributions are the same as they were two years ago. Use a level of confidence of .01. Should we accept Ho or reject Ho?
Suppose your prior on θ isuniform on [0, 1] and that she then makes two shots in a row. Assume that the outcomes of thetwo shots are independent.
The confidence interval must be less than 5 percentage points i.e. the confidence interval should extend at most 2.5 percentage points above and below the sample proportion?
Make a decision using the Decision Rule approach at given α = 0.05.
Assuming the sample size of 40 can be considered as large, compute the confidence interval for a confidence level of 90%.
A college's data about incoming freshmen indicates that the mean of their high school GPA was 3.4, with a standard deviation of 0.35. Let X=the GPA of an incoming freshman. The students are randomly assigned to writing groups of size 49.
1. the labor relations manager of a large corporation wished to study the absenteeism among workers at the companys
Then, give two examples of correlation which are evaluated in a business environment and discuss the decision made by evaluating the correlation.
Find out the probability that disc doesn't touch line between two planks. Find out also expected distance from center of the disc to closest line between two planks.
Past studies have revealed that only 88% of booked passengers actually arrive for flight.) Determine probability that if airline books 17 persons, not adequate seats will be available.
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