Answer:
B
Explanation:
when she is talking over the slides, some people are not good multi-taskers and want to listen to the more interesting thing, which is the audio.
The standard deviation of sample equals: 11
Explanation:
Given:
variance of sample (
) = 121
no, of observations made = 441
standard deviation = ?
By using the formula:
Standard deviation (S) = 
= 
= 
= 11
Hence the standard deviation is equal to 11.
Find the gross profit fro the sale of the television:
Gross profit = Sales - Cost of goods sold
Gross profit = $1,600 - $225
Gross profit = $1,375
The gross profit of a sale is the profit from sales minus the cost it took to produce/complete the item or service.
Answer: A. Fewer new businesses were started in 2010 than in other years
Explanation:
The portfolio beta would simply be the summation of the
weighted average of each beta.
Where weighted average of each beta is calculated as:
Stock weighted average = Stock proportion * Individual
beta
Therefore,
Stock A beta weighted average = 0.2 * 0.4 = 0.08
Stock B beta weighted average = 0.3 * 1.2 = 0.36
Stock C beta weighted average = 0.25 * 2.5 = 0.625
Stock D beta weighted average = 0.25 * 1.75 = 0.4375
The summation of all betas yield the overall portfolio
beta:
Portfolio beta = 0.08 + 0.36 + 0.625 + 0.4375
<span>Portfolio beta = 1.5025 ~ 1.5</span>