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Regular gasoline averaged $2.45 per gallon in November 2018. Assume the standard deviation for gasoline prices is $0.13 per gallon. A random sample of 35 service stations was selected. Complete parts a through d. What is the probability that the sample mean will be less than $2.47? The probability that the sample mean will be less than $2.47 is (Type an integer or decimal rounded to four decimal places as needed.) b. What is the probability that the sample mean will be more than $2.44? The probability that the sample mean will be more than $2.44 is- (Type an integer or decimal rounded to four decimal places as needed.) c. What is the probability that the sample mean will be between $2.42 and $2.52? The probability that the sample mean will be between $2.42 and $2.52 is (Type an integer or decimal rounded to four decimal places as needed.)

Regular gasoline averaged $2.45 per gallon in November 2018. Assume the standard deviation for gasoline prices is $0.13 per gallon. A random sample of 35 service stations was selected. Complete parts a through d. What is the probability that the sample mean will be less than $2.47? The probability that the sample mean will be less than $2.47 is (Type an integer or decimal rounded to four decimal places as needed.) b. What is the probability that the sample mean will be more than $2.44? The probability that the sample mean will be more than $2.44 is- (Type an integer or decimal rounded to four decimal places as needed.) c. What is the probability that the sample mean will be between $2.42 and $2.52? The probability that the sample mean will be between $2.42 and $2.52 is (Type an integer or decimal rounded to four decimal places as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Regular gasoline averaged $2.45 per gallon in November 2018. Assume the standard deviation for gasoline prices is $0.13 per gallon. A random sample of 35 service stations was selected. Complete parts a through d. a. What is the probability that the sample mean will be less than $2.47? The probability that the sample mean will be less than $2.47 is (Type an integer or decimal rounded to four decimal places as needed.) b. What is the probability that the sample mean will be more than $2.44? The probability that the sample mean will be more than $2.44 is (Type an integer or decimal rounded to four decimal places as needed.) c. What is the probability that the sample mean will be between $2.42 and $2.52? The probability that the sample mean will be between $2.42 and $2.52 is (Type an integer or decimal rounded to four decimal places as needed.) d. Suppose the sample mean is $2.51. Does this result support the average gasoline price findings? Explain your answer. The probability that the average price per gallon is more than $2.51 is (Type an integer or decimal rounded to four decimal places as needed.) Does this result support the average gasoline price findings? Explain your answer. Consider a probability of less than 0.05 to be small. O A. The probability does not support the finding that the average price per gallon for gas in the population is $2.45, because this probability is large. O B. The probability does not support the finding that the average price per gallon for gas in the population is $2.45, because this probability is small. O c. The probability supports the finding that the average price per gallon for gas in the population is $2.45, because this probability is large. O D. The probability supports the finding that the average price per gallon for gas in the population is $2.45, because this probability is small.
Transcribed Image Text:Regular gasoline averaged $2.45 per gallon in November 2018. Assume the standard deviation for gasoline prices is $0.13 per gallon. A random sample of 35 service stations was selected. Complete parts a through d. a. What is the probability that the sample mean will be less than $2.47? The probability that the sample mean will be less than $2.47 is (Type an integer or decimal rounded to four decimal places as needed.) b. What is the probability that the sample mean will be more than $2.44? The probability that the sample mean will be more than $2.44 is (Type an integer or decimal rounded to four decimal places as needed.) c. What is the probability that the sample mean will be between $2.42 and $2.52? The probability that the sample mean will be between $2.42 and $2.52 is (Type an integer or decimal rounded to four decimal places as needed.) d. Suppose the sample mean is $2.51. Does this result support the average gasoline price findings? Explain your answer. The probability that the average price per gallon is more than $2.51 is (Type an integer or decimal rounded to four decimal places as needed.) Does this result support the average gasoline price findings? Explain your answer. Consider a probability of less than 0.05 to be small. O A. The probability does not support the finding that the average price per gallon for gas in the population is $2.45, because this probability is large. O B. The probability does not support the finding that the average price per gallon for gas in the population is $2.45, because this probability is small. O c. The probability supports the finding that the average price per gallon for gas in the population is $2.45, because this probability is large. O D. The probability supports the finding that the average price per gallon for gas in the population is $2.45, because this probability is small.
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