Answer:
a) 
D. 9.74
b) 
B. 74
Step-by-step explanation:
Part a
We have the following dataset given:
69 74 75 62 70 93 64 69 61 88 67 77 87 90 66 91 77 63 82 82 71 74 76 65 83
We can begin calculating the sample mean with the following formula:
And replacing we got:
Now we can calculate the sample deviation with the following formula:
And after replace we got:
Part b
For this case we need to sort the value on increasing way:
[1] 61 62 63 64 65 66 67 69 69 70 71 74 74 75 76 77 77 82 82 83 87 88 90 91 93
And the median would be the value in the position 13 and we got:
Answer:
$143.5
Step-by-step explanation:
So I think you want to find interest rate
I=PRT
so
I= 1025*0.07*2
I=143.5
hope I helped!
I think its B. Because 396 divided by 3 equals 132 (there's 3 feet in a yard)
Answer:
18/96
Step-by-step explanation:
in order to solve this we can multiply them but we have to multiply by the reciprocal of the second fraction. like this:
9/12*9/8
what i did is i flipped the second fraction and this gives us the reciprocal and allows us to just multiply across and get our answer.
hope this helps
We can calculate the number of hours she needs to babysit by the rule of three.
1 hour--------------------$11
x---------------------------$331
x=(1 hour x x$331) / $11=30.0909.... hours≈31 hours
She needs to work 31 hours.
