A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 146.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 31 seconds, complete parts (a) through (d) below. C (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 92 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 92 seconds is (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 192 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 192 seconds in the restaurant's drive-through is (Round to four decimal places as needed.) (c) What proportion of cars spend between 2 and 3 minutes in the restaurant's drive-through? The proportion of cars that spend between 2 and 3 minutes in the restaurant's drive-through is (Round to four decimal places as needed.) (d) Would it be unusual for a car to spend more than 3 minutes in the restaurant's drive-through? Why? The probability that a car spends more than 3 minutes in the restaurant's drive-through is is than 0.05. (Round to four decimal places as needed.) so it be unusual, since the probability
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 146.9 seconds. Assuming drive-through times are normally distributed with a standard deviation of 31 seconds, complete parts (a) through (d) below. C (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 92 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 92 seconds is (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 192 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 192 seconds in the restaurant's drive-through is (Round to four decimal places as needed.) (c) What proportion of cars spend between 2 and 3 minutes in the restaurant's drive-through? The proportion of cars that spend between 2 and 3 minutes in the restaurant's drive-through is (Round to four decimal places as needed.) (d) Would it be unusual for a car to spend more than 3 minutes in the restaurant's drive-through? Why? The probability that a car spends more than 3 minutes in the restaurant's drive-through is is than 0.05. (Round to four decimal places as needed.) so it be unusual, since the probability
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
Related questions
Question
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 5 steps with 5 images
Recommended textbooks for you
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON