Answer:
49x + 114
Step-by-step explanation:
[ [ fireplace ] x = area of 5 ] x + 6
5x
patio = area of 5 + 49x + 114
5x + 19
(5x + 19) ( x + 6) = 5 + 19x + 30x + 114
(5 + 49x + 114) - (5
) = 49x + 114
(area of patio and fireplace) - (area of fireplace) = (area of patio only)
Answer: b. 0.98
Step-by-step explanation:
The formula to find the maximum error of the estimated mean :
(1)
, where = standard deviation
n= Sample size
z* = Critical z-value.
As per given , we have
n=100
Critical value for 95% confidence interval = z*=1.96
Put these values in the formula (1), we get
Hence, the maximum error of the estimated mean quality for a 95% level of confidence is 0.98.
Therefore , the correct answer is b. 0.98 .