Multiple Choice
You want to estimate the average gas price in your city for a litre of regular unleaded gasoline with 90% confidence.You believe that the standard deviation of prices is $0.04.If you wish to achieve a margin of error no larger than $0.02,how many gas stations should you sample?
A) 13
B) 11
C) 12
D) 14
E) 10
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q34: You want to estimate the average gas
Q35: P-value for t ≤ 1.44 with 45
Q36: A 90% confidence interval from a sample
Q37: Consider a right skewed distribution.What is the
Q38: You want to estimate the average gas
Q40: The amounts (in millilitres)of juice in
Q41: P-value for a two tailed test with
Q42: P-value for t ≥ 2.13 for a
Q43: A researcher wants to estimate the mean
Q44: Based on a sample of size 42,a