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Regular gasoline averaged $2.26 per gallon in September 2018. Assume the standard deviation for gasoline prices is $0.14 per gallon. A random sample of 30 service stations was selected. Complete parts a through d. a. What is the probability that the sample mean will be less than $2.23? The probability that the sample mean will be less than $2.23 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 $2.33? The probability that the sample mean will be more than $2.33 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 $2.22 and $2.387 The probability that the sample mean will be between $2.22 and $2.38 is. (Type an integer or decimal rounded to four decimal places as needed.) d. Suppose the sample mean is $2.32. Does this result support the average gasoline price findings? Explain your answer. The probability that the average price per gallon is more than $2.32 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 supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. B. The probability supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. O C. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. O D. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. Next

Regular gasoline averaged $2.26 per gallon in September 2018. Assume the standard deviation for gasoline prices is $0.14 per gallon. A random sample of 30 service stations was selected. Complete parts a through d. a. What is the probability that the sample mean will be less than $2.23? The probability that the sample mean will be less than $2.23 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 $2.33? The probability that the sample mean will be more than $2.33 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 $2.22 and $2.387 The probability that the sample mean will be between $2.22 and $2.38 is. (Type an integer or decimal rounded to four decimal places as needed.) d. Suppose the sample mean is $2.32. Does this result support the average gasoline price findings? Explain your answer. The probability that the average price per gallon is more than $2.32 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 supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. B. The probability supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. O C. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. O D. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. Next

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 $2.26 per gallon in September 2018. Assume the standard deviation for gasoline prices is $0.14 per gallon. A random sample of 30 service stations was selected. Complete parts a through d. a. What is the probability that the sample mean will be less than $2.23? The probability that the sample mean will be less than $2.23 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 $2.33? The probability that the sample mean will be more than $2.33 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 $2.22 and $2.38? The probability that the sample mean will be between $2.22 and $2.38 is (Type an integer or decimal rounded to four decimal places as needed.) d. Suppose the sample mean is $2.32. Does this result support the average gasoline price findings? Explain your answer. The probability that the average price per gallon is more than $2.32 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 supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. O B. The probability supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. O C. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. O D. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. Next
Transcribed Image Text:Regular gasoline averaged $2.26 per gallon in September 2018. Assume the standard deviation for gasoline prices is $0.14 per gallon. A random sample of 30 service stations was selected. Complete parts a through d. a. What is the probability that the sample mean will be less than $2.23? The probability that the sample mean will be less than $2.23 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 $2.33? The probability that the sample mean will be more than $2.33 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 $2.22 and $2.38? The probability that the sample mean will be between $2.22 and $2.38 is (Type an integer or decimal rounded to four decimal places as needed.) d. Suppose the sample mean is $2.32. Does this result support the average gasoline price findings? Explain your answer. The probability that the average price per gallon is more than $2.32 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 supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. O B. The probability supports the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. O C. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is large. O D. The probability does not support the finding that the average price per gallon for gas in the population is $2.26, because this probability is small. Next
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