HomeworkLib
Question

Assume that the speed of automobiles on an expressway during rush hour is normally distributed with...

Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 66 mph and a standard deviation of 5mph. if 400 cars selected at random, how many will be traveling slower than 60 mph

math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

0 0
Add a comment
Know the answer?
Add Answer to:
Assume that the speed of automobiles on an expressway during rush hour is normally distributed with...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Assume that the speed of automobiles on an expressway during rush hour is normally distributed with...

    Assume that the speed of automobiles on an expressway during rush hour is normally distributed with a mean of 63 mph and a standard deviation of 5 mph. If 200 cars are selected at random, how many will be traveling slower than 55 mph? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. O Of the 200 cars, approximately cars will be traveling slower than...

  • #5 Assume that the speed of automobiles on an expressway during rush hour ls nomaly distributed...

    #5 Assume that the speed of automobiles on an expressway during rush hour ls nomaly distributed with a mean of 66 mph and a standard deviation of 6 mph What percent of cars are traveling slower than 58 mph? Click the icon to view page 1 of the title of 2-cores m Click the icon to view page 2 of the table of com The percentage of cars wing wwe than (Type an integer or a decimal rounded to two...

  • 2. A radar unit is used to measure the speed of automobile on an expressway during...

    2. A radar unit is used to measure the speed of automobile on an expressway during rush-hour traffic. The speeds of individual automobiles are normally distributed with a standard deviation of 4 mph, a. Find the mean of all speeds if 3% of the automobiles travel faster than 72 mph. Round the mean to the newest forth b. Using the mean you found in part a, find the probability that a car is traveling between 70 mph and 75 mph....

  • Suppose that the speed at which cars go on the freeway is normally distributed with mean...

    Suppose that the speed at which cars go on the freeway is normally distributed with mean 73 mph and standard deviation 8 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X-N b. If one car is randomly chosen, find the probability that it is traveling more than 72 mph. c. If one of the cars is randomly chosen, find...

  • Suppose that the speed at which cars go on the freeway is normally distributed with mean...

    Suppose that the speed at which cars go on the freeway is normally distributed with mean 68 mph and standard deviation 6 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N(_____,______) b. If one car is randomly chosen, find the probability that it is traveling more than 69 mph. ________ c. If one of the cars is...

  • Suppose that the speed at which cars go on the freeway is normally distributed with mean...

    Suppose that the speed at which cars go on the freeway is normally distributed with mean 70 mph and standard deviation 8 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. 1. If one of the cars is randomly chosen, find the probability that it is traveling between 69 and 73 mph.

  • On a stretch of Interstate-89, car speed is a normally distributed variable with a mean of...

    On a stretch of Interstate-89, car speed is a normally distributed variable with a mean of 68.1 mph and a standard deviation of 3.5 mph. You are traveling at 72 mph. Approximately what percentage of cars are traveling faster than you? Enter your answer as a percentage with 1 decimal place. ____ %

  • Speeding: On a stretch of Interstate-89, car speed is a normally distributed variable with a mean...

    Speeding: On a stretch of Interstate-89, car speed is a normally distributed variable with a mean of 68.9 mph and a standard deviation of 3.5 mph. You are traveling at 75 mph. Approximately what percentage of cars are traveling faster than you? Enter your answer as a percentage with 1 decimal place. %

  • Speeding: On a stretch of Interstate-89, car speed is a normally distributed variable with a mean...

    Speeding: On a stretch of Interstate-89, car speed is a normally distributed variable with a mean of 68.9 mph and a standard deviation of 4.1 mph. You are traveling at 75 mph. Approximately what percentage of cars are traveling faster than you? Enter your answer as a percentage with 1 decimal place. %

  • On a stretch of Interstate-89, car speed is a normally distributed variable with a mean of...

    On a stretch of Interstate-89, car speed is a normally distributed variable with a mean of 69.3 mph and a standard deviation of 3.7 mph. Suppose you are a police officer on this stretch of road and only have time to ticket 2% of the cars that go by you. How fast should someone be traveling before you pull them over? Round your answer to 1 decimal place. mph

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT