Answer:
The answer and step by step explanation is in the picture below. Thank you! :)
Step-by-step explanation:
Answer:
The length is 7.50metres and the width is 5metres
Explanation:
Given the following
Length = 1.5Width
Perimeter = 25m
Required
Dimension of the room
Perimeter of the rectangular room = 2(L+W)
Since L = 1.5W
P = 2(1.5W+W)
P = 2(2.5W)
P = 5.0W
25 = 5W
W = 25/5
W = 5metres
Since L = 1.5W
L = 1.5*5
L = 7.5meters
The length is 7.50metres and the width is 5metres
Complete question :
The lifetimes of a certain type of calculator battery are normally distributed. The mean lifetime is 400 days, with a standard deviation of 50 days. For a sample of 6000 new batteries, determine how many batteries will last: 360 and 460 days
Answer:
0.67307
Step-by-step explanation:
Given that :
Mean, m = 400
Standard deviation, s = 50
Sample size, n = 6000
Obtain the standardized score :
Zscore =(x - m) / s
For X = 360
P(x < 360)
Zscore =(360 - 400) / 50
Zscore = - 40 / 50
Zscore = - 0.8
P(Z < - 0.8) = 0.21186
For X = 460
P(x < 460)
Zscore =(460 - 400) / 50
Zscore = 60 / 50
Zscore = 1.2
P(Z < 1.2) = 0.88493
P(Z < 1.2) - P(Z < - 0.8)
0.88493 - 0.21186
= 0.67307
Assuming that the label only covers the body of the cylinder and not the circular faces on the top and bottom.
