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1) Create a frequency table for the total number of people that prefer each type of music:
Tallies:
Rock
16
Rap
1
Classical
5
Country
Jazz
4
Hip-Hop
Pop
Total
40
2) Next, there are about 1,700 students at the school. Use the frequency table to predict how many students would like each type of music. Show all work that leads to your answers.
3) Include a paragraph that discusses the accuracy of your predications. Was your sample chosen representative of the student population of the school? Why or why not? What could you do to make your predictions more accurate?
In certain normal distribution of scores, mean is 50 and standard deviation is 4. Determine z-score corresponding to a score of 55.
Suppose that this is a simple random sample of adult residents of Maine.
The sample proportion of large gloves for each location is and . (Round your answers to 4 decimal places.)
To test whether the population standard deviation differ significantly using Chi-Square test.
Find the probability that 4 of the 5 committee members belong to a union.Find the probability using hypergeometric distribution.
The dealership would now like some general information based on the entire sample of vehicles. Calculate and explain the following:
Assume that the length X in minutes of a regular season NBA game is normally Distributed with X~N (µ X , σ 2 X );
A professor of math refutes the claim that the average student spends 3 hours studying for the midterm exam. Which hypothesis is used to test the claim?
What sample size would be needed to estimate the true proportion of students at your college
Calculate the suitable mean response time from both proposed locations and find out which proposed site must be selected for the new emergency facility.
Set up dummy coded dummy variables to contrast each of the other groups to Group 2, medium Anxiety; run a regression to predict exam performance (Y) from these dummy coded dummy variables.
A journal polled its readers to determine the proportion of wives who, if given a second chance, would marry their husband again.
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