Answer:
9
Step-by-step explanation:
if you substitute a for 3 and b for 2 you should get 9
The answer is b 18. 48 divided by 8 =6 therefor each 8th is 6, 3 8ths of 48 is 3 times 6 which equals 18.
Answer:
P(45<X<81) = P(-3<z<3)=0.9974 or 99.74%
Step-by-step explanation:
Mean = 63
Standard Deviation =6
We need to find probability that X lies between 45 and 81 i.e P(45<X<81)
First we will find z-score for X=45 and X=81
For X=45 the z-score can be found using formula:
Putting values and finding z-score
For X=45, z-score is -3
For X=81 the z-score can be found using formula:
Putting values and finding z-score
For X=81, z-score is 3
Now finding the probability of P(-3<z<3)
It can be solved as:
P(-3<z<3)=P(z<3)-P(z<-3)
Looking at the z-score table to find
P(z<3)= 0.9987
P(z<-3)=0.0013
So, P(-3<z<3)=P(z<3)-P(z<-3)
P(-3<z<3)=0.9987 - 0.0013
P(-3<z<3)=0.9974
or P(-3<z<3)= 99.74%
So, P(45<X<81) = P(-3<z<3)=0.9974 or 99.74%
Answer:
40 cheesburgers
Step-by-step explanation:
<u>Answer:</u>
<h2><em>
$18.5</em></h2>
<em></em>
<u>Step-by-step explanation:</u>
44-7=37 (we don't need the price of the planetarium ticket, so subtract 7)
37÷2=18.5 (since the entree fees are equal, divide 37 by 2)
<em />
<em>However, I might be wrong. </em>