Answer: confidence interval = 27.5 +/- 1.68
= ( 25.82, 29.18)
Step-by-step explanation:
Given;
Number of samples n = 64
Standard deviation r = 6mi/gallon
Mean x = 27.5mi/gallon
Confidence interval of 97.5%
Z' = t(0.0125) = 2.24
Confidence interval = x +/- Z'(r/√n)
= 27.5 +/- 2.24(6/√64)
= 27.5 +/- 1.68
= ( 25.82, 29.18)
Answer:
21
Step-by-step explanation:
The ratio is 5x To 3x so the difference is 2x
14/2 =7 So x=7
so 3(7)=
21 toilet papers
Answer:
A
Step-by-step explanation:
Hopefully this helps!
A= there are "4"one fourths in one hour and he hikes 2 miles every hour
B= 1, 1 1/2, 2, 4
C= it going to be 1/3 mile for every 1/6hour and she hikes 2 miles every hour.
D= 2/3, 1, 2, 4
Answer:
-50x+40
Step-by-step explanation: