Question

STEP BY STEP Suppose that the speed at which cars go on the freeway is normally...

STEP BY STEP

Suppose that the speed at which cars go on the freeway is normally distributed with mean 71 mph and standard deviation 10 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 73 mph. c. If one of the cars is randomly chosen, find the probability that it is traveling between 73 and 78 mph. d. 65% of all cars travel at least how fast on the freeway? mph.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
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 74 mph and standard deviation 9 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...
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 80 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 78 mph. c. If one of the cars...
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 69 mph and standard deviation 5 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 67 mph. c. If one of the cars is randomly...
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 69.3 mph and a standard deviation of 3.1 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
For each probability and percentile problem, draw the picture. The speed of cars passing through the...
For each probability and percentile problem, draw the picture. The speed of cars passing through the intersection of Blossom Hill Road and the Almaden Expressway varies from 12 to 35 mph and is uniformly distributed. None of the cars travel over 35 mph through the intersection. A) What is the probability that the speed of a car is at most 27 mph? (Enter your answer as a fraction.) B) What is the probability that the speed of a car is...
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 68.3 mph and a standard deviation of 3.9 mph. Suppose you are a police officer on this stretch of road and only have time to ticket 1% 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.
Speeding on the I-5. Suppose the distribution of passenger vehicle speeds traveling on the Interstate 5...
Speeding on the I-5. Suppose the distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in California is nearly normal with a mean of 72 miles/hour and a standard deviation of 5.25 miles/hour. Round all answers to four decimal places. 1. What proportion of passenger vehicles travel slower than 61 miles/hour? 2. What proportion of passenger vehicles travel between 76 and 82 miles/hour? 3. How fast do the fastest 18% of passenger vehicles travel?   4. Suppose the...
For each probability and percentile problem, draw the picture. The speed of cars passing through the...
For each probability and percentile problem, draw the picture. The speed of cars passing through the intersection of Blossom Hill Road and the Almaden Expressway varies from 15 to 35 mph and is uniformly distributed. None of the cars travel over 35 mph through the intersection. Part (i) State "P(19 < X < 59) = ___" in a probability question. What is the probability that the speed of a car is exactly 19 or 59 mph? What is the probability...
The speed of cars passing through the intersection of Blossom Hill Road and the Almaden Expressway...
The speed of cars passing through the intersection of Blossom Hill Road and the Almaden Expressway varies from 12 to 35 mph and is uniformly distributed. None of the cars travel over 35 mph through the intersection. a. In words, define the Random Variable X. b. Give the distribution of X. d. Enter an exact number as an integer, fraction, or decimal. f(x)= ? where <or equal to X <or equal to e. Enter an exact number as an integer,...
Speeding on the I-5. Suppose the distribution of passenger vehicle speeds traveling on the Interstate 5...
Speeding on the I-5. Suppose the distribution of passenger vehicle speeds traveling on the Interstate 5 Freeway (I-5) in California is nearly normal with a mean of 72.5 miles/hour and a standard deviation of 5.5 miles/hour. Round all answers to four decimal places. 1. What proportion of passenger vehicles travel slower than 69miles/hour? ) 2. What proportion of passenger vehicles travel between 60 and 65miles/hour? 3. How fast do the fastest 13% of passenger vehicles travel? (miles/hour) 4. Suppose the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT