2 or fewer days 18 (Male) 12 (Female)
3 or more days 32(Male) 38 (Female)
a) If an employee is randomly chosen from the 100 employees represented in the table above, what is the probability that the chosen employee exercises 3 or more days a week (label A)?
b) If an employee is randomly chosen from the 100 employees represented in the table, what is the probability that the chosen employee exercises 3 or more days a week, given that the chosen employee is male ( label B)?
c) Are events A and B independent?
d) Use a chi-square to determine if gender and the number of days a week an employee exercises are independent at the .01 level of significance© BrainMass Inc. brainmass.com October 25, 2018, 9:30 am ad1c9bdddf
a) Now A=number of people who exercises 3 or more days a week. From the give table, there are 32+38=70 people who exercises 3 or more days a week. Since there are 100 people together, P(A)=70/100=0.7
b) Using formula of conditional probability, P(people who exercises 3 or more days a week given male)=P(people who exercises 3 or more days a week and people who is male)/P(people who is male)
Now there are 18+32=50 ...
The solution gives detail steps on calculating conditional probability and performing fisher's exact test. All formula and calculations are shown and explained.
ANOVA Uses and Contingency Table
1. Name an application for the use of ANOVA. This can be in a professional setting, hobby, or something you find on the internet
2. What are some business situations where ANOVA would be more appropriate than a Z or T test?
3. Find an example of the use of a contingency table from the internet. Describe what it was testing for and what the result was.View Full Posting Details