Answer:
hope this will help
Step-by-step explanation:
Answer: B
Step-by-step explanation:
Answer:
speak English I don't understand your letter?and what your question?
Answer:
190
Step-by-step explanation:
Data provided in the question:
Confidence level = 99%
Therefore,
α = 1% = 0.01
[ from standard normal table ]
z-value for
= 2.58
Margin of error, E = $0.06
Standard deviation, σ = $0.32
Now,
n = 
Here,
n is the sample size (or the minimum number of gas stations )
on substituting the respective values, we get
=
=
= 13.76²
= 189.3376 ≈ 190
Hence,
minimum number of gas stations that she should include in her sample is 190
(A) 1.8
The difference is 18, 13 is bc the tenth term so divide 18 by 10 to get 1.8