Answer:
$26.3 night-time rest days
Range is $33.19
Step-by-step explanation:
We need to find the mean of the standard cost to find the night-time rest days:
So, the required mean is :
After simplification we will get the night-time rest days price which is: $26.3
Now, we will find the range in cost of stays in standard price and with breakfast price which is difference between the maximum cost minus the lowest cost
So, the sum of Standard cost is: $103
And the sum of Breakfast price cost is: $136.19
So, the required range is: $136.19-$103=$33.19
Answer:
0.57926
Step-by-step explanation:
We have been given that the capacity of an elevator is 15 people or 2385 pounds. The people have weights that are normally distributed with a mean of 165 lb and a standard deviation of 30 lb. We are asked to find the probability that a randomly selected person has a weight greater than 159 pounds.
First of all, we will find z-score corresponding to 159 using z-score formula.
Now, we need to find area under normal distribution curve that is greater than z-score of as:
Using formula , we will get:
Therefore, the probability that if a person is randomly selected, his weight will be greater than 159 pounds, is 0.57926.
The answer is about $10 is the estimate. Round $3.85 to $4 Round $3.06 to $3 Round $2.79 to $3 add $4+$3+$3=$10
Answer:
Negative 3.25 greater-than negative 2.5 + r
Step-by-step explanation:
The solution Ellen drew is ...
r < -0.75
This is the solution to ...
-3.25 > -2.5 +r
-0.75 > r . . . . . . . add 2.5 to both sides
_____
<em>Comment on the problem text</em>
Math expressions are much easier to read if you use math symbols to write them.
Answer:
12/5 days
Step-by-step explanation:
if d=number of days
w=work completed
person one completes w=d/6 (ie. after 6 days (when d=6) work will be completed (w=1))
person two completes w=d/4 (ie. after 4 days (when d=4) work will be completed (w=1))
so total work competed together w=d/6 + d/4
the job is complete when w=1 so
1 = d/6 + d/4
12 = 2d + 3d
12 = 5d
d = 12/5