Answer:
6:00pm is the answer
Step-by-step explanation:
a) For x = 27:
z = 27-28/2 = -0.5
For x = 31:
z = 31-38/2 = 1.5
From the normal distribution table, P(27 < x < 31) = P(-0.5 < z < 1.5) = P(z < 1.5) - P(z < -0.5) = 0.9332 - 0.3085 = 62.47%
b) For x > 30.2:
z = 30.2-28/2 = 1.1
From the normal distribution table, P(x > 30.2) = P(z > 1.1) = 1 - P(z > 1.1) = 1 - 0.8643 = 13.57%
Answer:
range of the test scores is 48
Step-by-step explanation:
60,72,94,108
108- 60=48
There are eight cities on the list.
The number of groups of 2 is (8·7)/2 = 28
The number of groups of 3 is (8·7·6)/(3!) = 56
The number of groups of 4 is (8·7·6·5)/(4!) = 70
The number of groups of 5 is (8·7·6·5·4)/(5!) = 56
The number of groups of 6 is (8·7·6·5·4·3)/(6!) = 28
The number of groups of 7 is (8·7·6·5·4·3·2)/(7!) = 8
So there are (28+56+70+56+28+8) = 246 ways to visit "some" of them.
There's only one way to visit "all" of them, and
there's only one way to visit "none" of them.
So, all together, Louise has 248 travel options.
If she decides to visit Chicago, I will show her a good time.
The answer in the green box should be 9.
