CORe | HBX CORe Final Examination

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Exam Name: HBX CORe Final Examination
Vendor Name: HBX

Total Questions: 263

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CORe


Discover Questions & Answers of CORe


Question: 1 

A 95% confidence interval for a sample of data is as follows: Sample Mean 90.5 Upper Bound: 98 Lower Bound: 83 Given this data, the tester is 95% confident that: 

A. all of the observations will fall between 83 and 98. 

B. the sample mean of 90.5 equals the true population means. 

C. the true population mean falls between 83 and 98. 

D. the sample mean falls between 83 and 98. 

Answer: C 

Question: 2 

What is the approximate poverty rate for the outlier in the scatterplot below?  

A. 10% 

B. 18% 

C. 25% 

D. 53% 

Answer: B 

Question: 3

A mutual fund manager believes that a new research method will provide better returns for clients. The manager's historical monthly return prior to the new research method was 0.46%. After the manager began using the new method the monthly return was 0.57%. After running a hypothesis test, the manager saw that the one-sided p-value was 0.029. Assuming a 95% confidence level, which of the conclusions below would be correct? 

A. Do not reject the null hypothesis and continue using the new method. 

B. Reject the null hypothesis and continue using the new method. 

C. Do not reject the null hypothesis and begin using the old method.
 
D. Reject the null hypothesis and begin using the old method. 

Answer: B



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