Essay
Four in ten Canadians who travel by car look for gas and food outlets that are close to or visible from the highway. Suppose a random sample of n = 20 Canadians who travel by car are asked how they determine where to stop for food and gas. Let x be the number in the sample who respond that they look for gas and food outlets that are close to or visible from the highway.
a. What are the mean and variance of x?
b. Calculate the interval 
What values of the binomial random variable x fall into this interval?
c. Find 
How does this compare with the fraction in the interval 
for any distribution? For mound-shaped distributions?
Correct Answer:
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a. 
, and b. 3.6180 to 12.3818. Since ...View Answer
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Correct Answer:
Verified
, and b. 3.6180 to 12.3818. Since ...View Answer
Unlock this answer now
Get Access to more Verified Answers free of charge
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