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SSSSS [86.1K]
3 years ago
11

Suppose your statistics instructor gave six examinations during the semester. You received the following exam scores (percent co

rrect): 79, 64, 84, 82, 92, and 77. To compute your final course grade, the instructor decided to randomly select two exam scores, compute their mean, and use this score to determine your final course grade.
a. Compute the population mean. This is your average grade based on all of your grades. (Round your answer to 2 decimal places.)
b. Compute the population standard deviation. (Round your answer to 2 decimal places.)
Business
1 answer:
mixas84 [53]3 years ago
3 0

Answer: a) the population mean is 79.67

b) the population standard deviation is 6.20

Explanation:

a) to calculate the population mean, add all the values together, and then divide by the number of values added: (79+64+84+82+92+77)/6 = 478/6 = 79.67

b) to calculate to population standard deviation, take each value and subtract the mean, square each answer and add them all together, then divide the answer by the number of values added - 1:

(79-79.67)^{2} + (64 -79.67)^{2} + (84-79.67)^{2} + (82-79.67)^{2} + (92-79.67)^{2} + (77-79.67)^{2}  = 429.33

429.33/(6-1) = 85.87

The standard deviation will be the difference between this value and the mean:

85.87 - 79.67 = 6.20

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Stock r has a beta of 1.5, stock s has a beta of 0.75, the expected rate of return on an average stock is 13%, and the risk-free
masha68 [24]

Answer:

4.5%

Explanation:

The formula to compute the expected rate of return under the CAPM model is shown below:

Expected rate of return = Risk-free rate of return + Beta × (Market rate of return - Risk-free rate of return)      

For stock r, the required rate of return is

= 7% + 1.5× (13% - 7%)

= 7% + 1.5 × 6%

= 16%

For stock s, the required rate of return is

= 7% + 0.75× (13% - 7%)

= 7% + 0.75 × 6%

= 11.5%

So, the difference of required rate of return is

= 16% - 11.5%

= 4.5%

The Stock R has high riskier stock whereas the stock S has less riskier stock due to beta

6 0
3 years ago
What types of technology have enable gig jobs to become a larger part of the workforce?<br>​
Natali [406]

Answer:

Transparency through blockchain. It may have gained notoriety as the technology that provides the infrastructure for bitcoin, but blockchain is poised to play a bigger and more important role for gig workers in the years ahead...

Explanation:

5 0
3 years ago
Suppose that people’s expectations in 2013 are rational. If the Federal Reserve engages in a fourth round of quantitative easing
Aleonysh [2.5K]

Answer:

If the Federal Reserve engages in a fourth round of quantitative easing, then the inflation rate will [Increase, Decrease, or remain the same] and the unemployment rate will [increase, decrease, or remain the same] in the short run.

These changes occur as a result of the aggregate demand curve [increasing, decreasing, or remaining the same] and the aggregate supply curve [increasing, decreasing, or remaining the same].

Explanation:

The Federal Reserve's fourth round of Quantitative Easing (QE) is the central bank monetary policy which enables it to buy government bonds and other assets from the open market in order to inject more money or increase the money supply in the economy, thereby expanding economic activity by encouraging lending and investments.  QE can cause inflation if demand grew faster than supply as it takes longer for the velocity of money – the speed at which capital zooms through the economy and turns over – that is, to permeate the economy.

6 0
3 years ago
The increased risk of foreign investments is most often incorporated in capital budgeting models​ by: ​(Select the best choice​
Anettt [7]

Answer:

b. adjusting the discount rate.

Explanation:

The increased risk of foreign investments is most often incorporated in capital budgeting models​ by <u>adjusting the discount rate.</u> This reason is whenever the foreign exchange risk is perceived to be high then the discount rate is increased by to incorporate higher risk.

6 0
3 years ago
Since your first birthday, your grandparents have been depositing $140 into a savings account every month. The account pays 12%
guajiro [1.7K]

Answer:

The correct answer is: $5,140.80.

Explanation:

Simple Interest is a quick method of calculating the interest charged on a loan or the interest accrued out of an investment. It is determined by multiplying the interest rate by the principal by the number of periods. It is one of the most common methods used in finance to calculate the return on certain investments.

In the example, the number of years considered to calculate the interest is 17 because the 18th year on interest is realized by the end of that year. Thus:  

  • Deposit per year: $140
  • Interest per year: $140 x 12% = $16.80
  • Interest accrued: $16,8 x 17 = $285.60

  • Total savings: (Deposit per year x number of years) + interest accrued
  • Total savings: ($140 x 18) + $285.60
  • Total savings: $5,140.80
5 0
3 years ago
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