Standard deviation = √(n * p * q)
You are given n and p
q = 1 - p
q = 1 -0.2 = 0.8
Standard deviation = √(21 * 0.2 * 0.8)
=√3.36 = 1.83
The answer is A.
Answer:
17c
Step-by-step explanation:
17 × c = 17c
The answer is 235.2 dollars
Explanation: find one percent of 147 (1.47) and multiply it by 60 then add that to 147.
One third is left, i think. Sorry, I might be off.
Answer:
$66.80
Step-by-step explanation:
The monthly payment can be computed using the pmt formula in excel spreadsheet as shown below:
=pmt(rate,nper,-pv,fv)
the rate is the interest rate of 3.5% divided by 12 months to show interest rate per month
nper is the number of months it would take to complete the payments which is 4 years multiplied by 12 months i.e 48 months
pv is the cost of the gadget at $2,988
fv is the sum of all month payments which is not unknown
=pmt(3.5%/12,48,-2988,0)=$66.80
