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Calculate and Display, using Excel, the following:
1. Draw the statistics as a histogram. Do they resemble the Normal Distribution?
2. Find the median, the average grade and the standard deviation of the two terms.
3. Calculate using the t-student distribution to find out if there is a significant difference among these two terms.
Grade Range Numeric Grade Number of Students in term 1 Number of Students in term 2Outstanding (A*) 80 + 85 1 1Excellent (A) 70-79 75 3 4Very Good (B) 60-69 65 8 7Good (C) 50-59 55 5 7Marginal Fail (D) 40-49 45 2 4Fail (F) Below 40 0 1 2Total 20 25
question 1 a high school counselor wants to examine whether the teenage pregnancy rate at her school is different from
let x denote the number of times a certain numerical control machine will malfunction 1 2 or 3 times on any given day.
If you were to roll a single die 10 times, the result of each roll would be __________. A) Mutually exclusive of the other nine rolls B) Proportional to the other nine rolls C) Dependent upon the other nine rolls D) Independent of the other nine roll..
question 1 a 2009 national poll of 1053 u.s. adults found that 548 favored the governments plan for a stimulus
whenever the population standard deviation is unknown and the population has a normal or near-normal distribution which
When studying the simultaneous responses to two categorical questions, we should set up a:
Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution.
1.a manufacturer of infant formula is running an experiment using the standard control formula and two new formulas a
About one-third of the students entering a certain university drop out during or at the end of their first year." Does this statement illustrate percentage, proportion or probability?
makers of generic drugs must show that they do not differ significantly from the reference drugs they imitate. one
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.
Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.
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