Answer:
0.16
Step-by-step explanation:
Given that the length of time Y necessary to complete a key operation in the construction of houses has an exponential distribution with mean 18 hours.
The formula for cost of completing this operation is

C has mean 3124
Var(C) = 28,460,160
Std dev (C) = 
X = 4000 hours
Difference = 
Mean diff/std dev = 
i.e.nearly 0.16 standard deviations above the mean is 4,000 hours
Answer: b
Step-by-step explanation:
four more
+4
twice a number
n2 (we dont know the number and it’s multiplied by 2)
is
=
-10
so
n2 + 4 = -10
Answer:
The answer is D
Step-by-step explanation:
Answer:
5-ounce bottle for $2.69 is the better deal
Step-by-step explanation:
From the given cases;
Let's determine the cost of 1-ounce of the shampoo's price in both cases
The first one provides us with information about puchasing a shampoo in a 5-ounce bottle which cost $2.69
Suppose:
5 - ounce = $2.69
1 - ounce = x
By cross multiplying:
1-ounce × $2.69 = 5-ounce × (x)
(x) = (1-ounce × $2.69 )/ 5-ounce
x = $0.538
For the second case;
A 14-ounce bottle costs $10.89
The 1-ounce wil costs $x
(x) = (1-ounce × $10.89 )/ 14-ounce
(x) = $0.7778
Therefore, we can conclude that it is better to buy the shampoo in a 5-ounce bottle for $2.69 than the 14-ounce bottle because , the lowest value of 1 ounce in 5-ounce bottle for $2.69 seems to be cheaper than the 14-ounce bottle.