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1) Explain distribution of sample means (shape , Expected value , and standard error ) for samples of n=36 selected from population with a mean of m =100 and standard deviation of s=12.
2) For population with a mean of m =50 and standard deviation of s =10. How much error, on average, would you expect between sample mean (M) and population mean for:
a) a sample of n=4 scores.
b) a sample of n=16 scores.
c) a sample of n=25 scores
Utilizing Excel data analysis calculate t distribution also deduce the result. Study of variance is used to investigate if there is a difference in the mean mileage of the three cars.
What percent of the Fords traveled 62.000 miles or less during the year?
What is the probability that Sara will die in her 60 th year? Using this probability and the $50,000 death benefit, what is the expected loss to Big Rock Insurance?
A researcher hypothesizes that parents with school-aged children are more probable to vote in favour of a referendum increasing public school spending than adults without school-aged children, but wonders of this relationship holds for both Democr..
Find out the probability distribution, and the cumulative probability distribution of car arrivals.
Here are the DMS odor thresholds for 10 untrained students:
Find out the probability
Determine the probability in big class that both sections are covered? Only one section? Neither section? Determine the expected number of sections covered?
The cost of one serving of peanut butter ( in cents) for a random sample of 19 jars of peanut butter was found to be:
The field of statistics can be roughly subdivided into two areas: descriptive statistics and probability.
In a poll of 1,004 adults, 93% indicated that restaurants and bars should refuse service to patrons who have had too much to drink. Construct the 90% confidence interval for the proportion of all adults who feel the identical way.
Based on this sample, is Moe correct in his assertion? Write up formal commentary of results of your test.
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