Answer:
s = $13,014.22
Explanation:
Sample values: $40,632, $35,554, $42,192, $33,432, $69,479 and $43,589
Sample size = 6
The standard deviation of a sample (s) is given by:

Where X is the sample mean, n is the sample size, and xi is each value in the sample.
The sample mean is given by:

The standard deviation is:

Answer:
Total material price variance= $380 favorable
Explanation:
Giving the following information:
Material A:
Purchase= 1,000 units
Purchase price= $2.1
Standard price= $2
Material B:
Purchase= 2,400 units
Purchase price= $2.8
Standard price= $3
<u>To calculate the total material price variance, we need to use the following formula on each material:</u>
<u></u>
Direct material price variance= (standard price - actual price)*actual quantity
<u>Material A:</u>
Direct material price variance= (2 -2.1)*1,000
Direct material price variance= $100 unfavorable
<u>Material B:</u>
Direct material price variance= (3 - 2.8)*2,400
Direct material price variance= $480 favorable
Total material price variance= -100 + 480
Total material price variance= $380 favorable
i feel either c or d but d is probably wrong because they would have asked you that at the interview and c could be right because they need your social security for taxes so C