Homework Help is Here – Start Your Trial Now!
Math
Statistics
A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 142.2 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 100 seconds? The probability that a randomly selected car will get through the restaurants drive-through in less than 100 seconds is (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through is (Round to four decimal places as needed.) (e) 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 restaurants drive-through? Why? The probability that a car spends more than 3 minutes in the restaurant's drive-through is so it (Round to four decimal places as needed) be unusual, since the probability is than 0.05

A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 142.2 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 100 seconds? The probability that a randomly selected car will get through the restaurants drive-through in less than 100 seconds is (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through is (Round to four decimal places as needed.) (e) 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 restaurants drive-through? Why? The probability that a car spends more than 3 minutes in the restaurant's drive-through is so it (Round to four decimal places as needed) be unusual, since the probability is than 0.05

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
See similar textbooks
icon
Related questions
Question

Plz complete  solution  

A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 142.2 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 100 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 100 seconds is (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through is (Round to four decimal places as needed) (e) 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 so it (Round to four decimal places as needed) be unusual, since the probability is than 0.05
Transcribed Image Text:A study found that the mean amount of time cars spent in drive-throughs of a certain fast-food restaurant was 142.2 seconds. Assuming drive-through times are normally distributed with a standard deviation of 24 seconds, complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) What is the probability that a randomly selected car will get through the restaurant's drive-through in less than 100 seconds? The probability that a randomly selected car will get through the restaurant's drive-through in less than 100 seconds is (Round to four decimal places as needed.) (b) What is the probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through? The probability that a randomly selected car will spend more than 174 seconds in the restaurant's drive-through is (Round to four decimal places as needed) (e) 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 so it (Round to four decimal places as needed) be unusual, since the probability is than 0.05
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Calculus For The Life Sciences
Calculus For The Life Sciences
Calculus
ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
SEE MORE TEXTBOOKS