Well 117/9=13 so kari has $13
Answer:
hi what are you diong mark me brainist
Step-by-step explanation:
Answer:
Its D.
Step-by-step explanation:
All you have to do is divide 3 1/2 by 1/2.
Answer:
B on e2020/edge
Step-by-step explanation:
Answer:
0.0039 is the probability that the sample mean hardness for a random sample of 12 pins is at least 51.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 50
Standard Deviation, σ = 1.3
Sample size, n = 12
We are given that the distribution of hardness of pins is a bell shaped distribution that is a normal distribution.
Formula:
Standard error due to sampling =

P(sample mean hardness for a random sample of 12 pins is at least 51)
Calculation the value from standard normal z table, we have,
0.0039 is the probability that the sample mean hardness for a random sample of 12 pins is at least 51.