Please use the following information to answer questions 33-35: A researcher is testing the effect of a new flu vaccine on absenteeism from work. A sample of n = 9 employees are randomly selected from the normally distributed population and given the vaccine; then, the researcher measures how many times they were absent in the subsequent year. If the mean number of absences in the entire organization (i.e., in the population) are 4 per year, can the researcher conclude that the vaccine had an impact on absenteeism, and if so, how large was the effect? Use an α of .05. Be sure to show all 5 steps. Absences: 2 3 2 1 5 4 2 1 2 Question 33: Which of the following correctly represents the null and alternative hypothesis for the mentioned sample (MUST SHOW WORK FOR THIS PROBLEM)? Group of answer choices a. Ho: µ ≥ 4, H1: µ < 4 b. Ho: µ ≤ 9, H1: µ > 9 c. Ho: µ = 4, H1: µ ≠ 4 d. Ho: µ > 1, H1: µ ≤ 1 Question 34: Which of the following represents the critical region for this mentioned sample (MUST SHOW WORK FOR THIS PROBLEM)? Group of answer choices a. t = ±2.31 b. t = 2.31 c. t = -2.31 d. t = 0.05 Question 35: Compute the test statistic (t-observed) for the mentioned sample (MUST SHOW WORK FOR THIS PROBLEM).

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please use the following information to answer questions 33-35:

A researcher is testing the effect of a new flu vaccine on absenteeism from work. A sample of n = 9 employees are randomly selected from the normally distributed population and given the vaccine; then, the researcher measures how many times they were absent in the subsequent year. If the mean number of absences in the entire organization (i.e., in the population) are 4 per year, can the researcher conclude that the vaccine had an impact on absenteeism, and if so, how large was the effect? Use an α of .05. Be sure to show all 5 steps.

Absences: 2 3 2 1 5 4 2 1 2

Question 33: Which of the following correctly represents the null and alternative hypothesis for the mentioned sample (MUST SHOW WORK FOR THIS PROBLEM)?

Group of answer choices

a. Ho: µ ≥ 4, H_1:µ < 4

b. Ho: µ ≤ 9, H_1:µ > 9

c. Ho: µ = 4, H_1:µ ≠ 4

d. Ho: µ > 1, H_1:µ ≤ 1

Question 34: Which of the following represents the critical region for this mentioned sample (MUST SHOW WORK FOR THIS PROBLEM)?

Group of answer choices

a. t = ±2.31

b. t = 2.31

c. t = -2.31

d. t = 0.05

Question 35: Compute the test statistic (t-observed) for the mentioned sample (MUST SHOW WORK FOR THIS PROBLEM).

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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