Laviella0514viz
Answered

The mean gasoline consumption of 10 cars is 28 liters with a standard deviation of 1.6 liters. What is the appropriate form of test to be use in this problem?
A. Z
B. t
C. P
D. s​

Sagot :

Juvilynjudavarviz

95%CI=(

x

ˉ

−t

0.025,n−1

n

s

,

x

ˉ

+t

0.025,n−1

n

s

)=

=(28-2.26\frac{1.6}{\sqrt{10}},28+2.26\frac{1.6}{\sqrt{10}})=(26.86,29.14).=(28−2.26

10

1.6

,28+2.26

10

1.6

)=(26.86,29.14).