Question

7. The Weights of 100 remote control cars at a competition are approximately normally distributed. The...

7. The Weights of 100 remote control cars at a competition are approximately normally distributed. The average weight is 3.2 kg, with a standard deviation of 0.4 kg.

  1. How many remote control cars would be disqualified if it were against the rules to have a car with a weight of more than 4 kg or less than 2.4 kg?

  1. A car is said to be in the 90th percentile. How much does it weigh?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
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
Similar Questions
8. Suppose weights of cars in America are normally distributed with a mean of 3550lbs and...
8. Suppose weights of cars in America are normally distributed with a mean of 3550lbs and a standard deviation of 870lbs. What is the probability that a car weighs between 3000 and 4000 lbs? What would be the weight of a car in the 84th percentile of this distribution?
The weights for newborn babies is approximately normally distributed with a mean of 6 pounds and...
The weights for newborn babies is approximately normally distributed with a mean of 6 pounds and a standard deviation of 1.7 pounds. Consider a group of 900 newborn babies: 1. How many would you expect to weigh between 5 and 9 pounds? 2. How many would you expect to weigh less than 8 pounds? 3. How many would you expect to weigh more than 7 pounds? 4. How many would you expect to weigh between 6 and 10 pounds?
A study indicates that the weights of adults are normally distributed with a mean of 140...
A study indicates that the weights of adults are normally distributed with a mean of 140 lbs and a standard deviation of 25 lbs. a. What is the probability that a randomly selected adult weights between 120 and 165 lbs? b. if 200 adults are randomly selected from this population, approximately how many of them weigh more than 170 lbs? c. Find the value of weight X such that only 20% of adults weight less than that.
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of...
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of 207 pounds and standard deviation of 24 pounds. a. What proportion of players weigh between 200 and 250 pounds? b. What is the probability that the mean weight of a team of 25 players will be more than 215 pounds?
The weights of a certain dog breed are approximately normally distributed with a mean of 53...
The weights of a certain dog breed are approximately normally distributed with a mean of 53 pounds, and a standard deviation of 5.9 pounds. Answer the following questions. Write your answers in percent form. Round your answers to the nearest tenth of a percent. a) Find the percentage of dogs of this breed that weigh less than 53 pounds. % b) Find the percentage of dogs of this breed that weigh less than 49 pounds. % c) Find the percentage...
The weights for newborn babies is approximately normally distributed with a mean of 5.4 pounds and...
The weights for newborn babies is approximately normally distributed with a mean of 5.4 pounds and a standard deviation of 1.6 pounds. Consider a group of 1100 newborn babies: 1. How many would you expect to weigh between 3 and 8 pounds? 2. How many would you expect to weigh less than 7 pounds? 3. How many would you expect to weigh more than 6 pounds? 4. How many would you expect to weigh between 5.4 and 9 pounds? HINT:...
Suppose birth weights of human babies are normally distributed with a mean of 120 ounces and...
Suppose birth weights of human babies are normally distributed with a mean of 120 ounces and a stdev of 16 ounces (1lb = 16 ounces). 1. What is the probability that a baby is at least 9 lbs 11 ounces? 2. What is the probability that a baby weighs less than 10 lbs (160 ounces)? 3. What weight is the 90th percentile?
The weights of a certain dog breed are approximately normally distributed with a mean of 50...
The weights of a certain dog breed are approximately normally distributed with a mean of 50 pounds, and a standard deviation of 6.6 pounds. Use your graphing calculator to answer the following questions. Write your answers in percent form. Round your answers to the nearest tenth of a percent. a) Find the percentage of dogs of this breed that weigh less than 50 pounds. ______ % b) Find the percentage of dogs of this breed that weigh less than 47...
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of...
Suppose that the weights of professional baseball players are approximately normally distributed, with a mean of 207 pounds and standard deviation of 24 pounds. What proportion of players weigh between 200 and 250 pounds? What is the probability that the mean weight of a team of 25 players will be more than 215 pounds? Could you please explain too?
Suppose that the weight of seedless watermelons is normally distributed with mean 6.6 kg. and standard...
Suppose that the weight of seedless watermelons is normally distributed with mean 6.6 kg. and standard deviation 1.4 kg. Let X be the weight of a randomly selected seedless watermelon. Round all answers to 4 decimal places where possible. What is the probability that a randomly selected watermelon will weigh more than 6 kg? What is the probability that a randomly selected seedless watermelon will weigh between 6.2 and 7.1 kg? The 90th percentile for the weight of seedless watermelons...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT