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The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did not represent the entire population. But the identical test scores (for honor students) collected from all schools in a state will result in a normal distribution.
Identify an example of a population that you would expect to be normally distributed. Explain why, according to you, it would be normally distributed. Then, describe a subset of the population you identified and explain why it would not be normally distributed and what would the distribution look like.
The probability that the daily demand at this store is at least one and at most three is:
Compute the coefficient of determination, r 2 , and interpret its meaning.
What happens to the expected return and standard deviation of returns of the portfolio in Part a if the following conditions exist?
Compute the probability that debt for a randomly selected borrower with good credit is more than $18,000?
If absolute value of test statistic is less than critical value in hypothesis test decision is to?
Banner Mattress and Furniture Company wishes to study the number of credit applications received per day for the last 300 days.
This activity is a revision of an activity found in Real Data: A Statistics Workbook Based on Empirical Data by Z. C Holcomb (1997). Published by Pyrczak Publishing.
Five test vehicles of each kind were crashed, with results given below. Research question: Are mean crash damages the same for these 3 vehicles?
Does the weight of a vehicle affect the gas mileage? The following random sample was collected where x = weight of a vehicle in hundreds of pounds and y = miles per gallon.
Use this information to determine the empirical probability that the next bird to visit the feeding station will be a dove.
A better case can be made that observation 13 (Los Arboles) is an outlier. Describe what this means in plain terms.
What type of error would result in that case? Respond to at least two of your classmate's postings.
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