c) The Department of Transportation of a country reported that 80.2% of the country's airline flights arrived on time. One researcher randomly selected 50 airline flights. Let X = the number of flights arriving on time. (i) Does X meet the conditions of a Binomial random variable? Explain your choice in two sentences. (2 Marks) (ii) Calculate the Z-score (to 2 d.p.) for 32 flights arriving on time if the mean is 40 flights and the standard deviation is 2.82. Would you be surprised to learn that 32 flights arrived on time? Use one sentence to explain your answer. (2 Marks)

c) The Department of Transportation of a country reported that 80.2% of the country's airline flights arrived on time. One researcher randomly selected 50 airline flights. Let X = the number of flights arriving on time. (i) Does X meet the conditions of a Binomial random variable? Explain your choice in two sentences. (2 Marks) (ii) Calculate the Z-score (to 2 d.p.) for 32 flights arriving on time if the mean is 40 flights and the standard deviation is 2.82. Would you be surprised to learn that 32 flights arrived on time? Use one sentence to explain your answer. (2 Marks)

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

See similar textbooks