Question 5 A Six Sigma Black Belt analyst wants to check if a product is being m
ID: 3367983 • Letter: Q
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Question 5
A Six Sigma Black Belt analyst wants to check if a product is being made to the same specifications in two different factories, Factory A and Factory B. The average weight of each product is compared between the two different factories. Which is the proper test to use?
Paired t-test
Chi-square test
Independent-samples t-test
ARIMA
3.125 points
Question 6
A marketing department is interested in testing if adding testimonials can increase sales on their website. They compare average total sales before and after adding testimonials. Which statistical test would be most appropriate?
Chi-square test
Paired-samples t-test
One-sample t-test
Cox Proportional Hazards Regression
3.125 points
Question 7
A bar owner wants to know if creating a signature drink for the establishment increases total revenue. They compared average revenue for each of its bartenders before the signature drink to 30 days after for each of the same bartenders. The correct statistical test to use is a:
Pearson Correlation
Chi-square test
paired-samples t-test
independent-samples t-test
3.125 points
Question 8
Black Box fitness startup is interested in creating new virtual reality technology that allows a user to workout in the gym in front of a virtual audience. The company claims this will improve performance.
The average bench press for a sample of 35 people was 95lbs before, and 110lbs after. If the ? used was 0.01 and p-value was 0.0003, which of the following is true?
The mean difference was 15lbs.
The correct statistical test to use is a paired-samples t-test.
The test was statistically significant.
Paired t-test
Chi-square test
Independent-samples t-test
ARIMA
3.125 points Save Answer Question 5 A Six Sigma Black Belt analyst wants to check if a product is being made to the same specifications in two different factories, Factory A and Factory B. The average weight of each produet is compared between the two different factories. Which is the proper test to use? Paired t-test Chi-square test Independent-samples t-test ARIMA Question 6 3.125 points Save Answer A marketing department is interested in testing if adding testimonials can increase sales on their website. They compare average total sales before and after adding testimonials. Which statistikal test would be most appropriate? Chi-square test Paired-samples t-test One-sample t-test Cox Proportional Hazards Regression 3.125 points Save Answer Question 7 A bar owner wants to know if creating a signature drink for the establ ishment increases total revenue. They compared average revenue for each of its bartenders before the signature drink to 30 days after for each of the same bartenders. The correct statistical test to use is a Pearson Corre lation paired-samples t-test independent-samples t-test Question 8 3.125 points Save Answer Black Box fitness startup is interested in creating new virtual reality technology that al lows a user to workout in the gym in front of a virtual audience. The company claims this wl mprove performance. The average bench press for a sample of 35 people was 95lbs before, and 110lbs after, tf the ? used was 0.01 and p-value was 0.0003, which of the following is true? The mean difference was 1Sibs. The correct statistical test to use is a paired-samples t-test. The test was statistically significant All of these answers are correctExplanation / Answer
Question5
Here we have two independent samples and we need to compare mean of populations so independent sample t test will be used.
Correct option: Independent-samples t-test
Question 6:
Here we have one sample , so one sample t test will used.
Correct option: One-sample t-test
Question 7:
Here we have paired data, so paired sample t test will used.
Correct option: Paired-samples t-test
Question 8:
Since p-value is less than 0.01 so we reject the null hypothesis.
Correct option is : All of these answers are correct.
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