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.
Answer:
an increase in the operating income by $16,322
Explanation:
The computation of the impact in the operating income is given below:
Variable cost of 75 units (1300000 × 75 ÷ 12700) 7,678
Sale price of 75 units (75 × 320) 24,000
Increase in operating income (24000 - 7678) $16,322
hence, the impact in the operating income is that there is an increase in the operating income by $16,322
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Answer:C. Real interest rates expected by British investors are 2 percentage points higher than the real interest rate expected by US investor.
Explanation:
The real interest rate is the market interest rate less the inflation rate.
The inflation rate always reduce the purchasing power of money which is the real measure of the purchasing power of money and not the money face value.