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1. According to AAA, the price of a gallon of regular, unleaded gas across gas stations in North Carolina is normally distributed with a mean of $2.39 and a standard deviation of $0.15. If you randomly pick a gas station, what is the probability the price is exactly $2.26 per gallon?
2. According to AAA, the price of a gallon of regular, unleaded gas across gas stations in North Carolina is normally distributed with a mean of $2.39 and a standard deviation of $0.15. If you randomly pick a gas station, what is the probability that the price is between $2.30 and $2.60 per gallon?
3. According to AAA, the price of a gallon of regular, unleaded gas across gas stations in North Carolina is normally distributed with a mean of $2.39 and a standard deviation of $0.15. Find the price such that only 20% of gas stations charge more than that price.
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The grades on a chemistry midterm at Talladega College are normally distributed with M=78 and σ = 6.2. John scored 72 on the exam.- Find the z-score for John's exam grade.- What does this answer mean?
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A Poisson distribution was fitted to data for the number of cars crossing a bridge in forty successive 6-minute intervals of time. The sample mean was calculated from the data to be ??¯ = 2.875 and this value was used as an estimate of the populat..
Construct a 99?% confidence interval to estimate the actual proportion of people who texted while driving in 2010.
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