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 a of .05. Be sure to show all 5 steps. Absences: 2 3 2 1 5 4 2 1 2 Step 1: Which of the following correctly represents the null and alternative hypothesis for the mentioned sample

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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 a of .05. Be sure to show all 5 steps.
Absences: 2 3 2 1 5 4 2 1 2
Step 1: Which of the following correctly represents the null and alternative hypothesis for the mentioned sample
Transcribed Image Text: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 a of .05. Be sure to show all 5 steps. Absences: 2 3 2 1 5 4 2 1 2 Step 1: Which of the following correctly represents the null and alternative hypothesis for the mentioned sample
O Ho: µ 2 4
H1: µ< 4
Ho: μ< 9
H1: µ > 9
Ho: μ -4
H1: µ# 4
Ho: μ > 1
H1: µs1
Transcribed Image Text:O Ho: µ 2 4 H1: µ< 4 Ho: μ< 9 H1: µ > 9 Ho: μ -4 H1: µ# 4 Ho: μ > 1 H1: µs1
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