The average bill for car repairs at a car service center is $196, with a standard...
The average bill for car repairs at a car service center is $196, with a standard deviation of $44. Assuming the bills to be normally distributed, find the probability of a bill exceeding $300.
Group of answer choices
0.4909
0.0182
0.9819
0.1406
0.0090
A tire manufacturer believes its tires will last an average of 48,000 miles, with standard deviation of 2,000 miles. What is the probability that one of these tires, chosen at random, will last at least 50,000 miles?
Group of answer choices
0.6587
0.3413
0.1587
0.4772
None of the above
Homework Answers
Here we need to find 
As distribution is normal we can convert x to z
So answer here is 0.0090
So correct answer is 0.1587
Add Answer to:
The average bill for car repairs at a car service center is
$196, with a standard...
The average bill for car repairs at a car service center is $196, with a standard...
The average bill for car repairs at a car service center is $196, with a standard deviation of $44. Assuming the bills to be normally distributed, find the probability of a bill exceeding $300.
For a new type of tire, a racing car team found the average distance a set...
For a new type of tire, a racing car team found the average distance a set of tires would run during a race is 161 miles, with a standard deviation of 14 miles. Assume that tire mileage of each set is independent and follows a Normal model Give answers in decimal form rounded to four decimal places as needed. 1 If the team plans to change tires twice during a 500-mile race, what is the expected value and standard deviation...
The lifetime of a certain brand of tires is normally distributed. The average lifetime of a...
The lifetime of a certain brand of tires is normally distributed. The average lifetime of a tire is 50,000 miles with a lifetime standard deviation of 8,400 miles. The probability that a randomly selected tire will last less than 45,000 miles is Tables Keypad 10 Points Answer 0.2758 0.0000 0.7242 0.2257 The resting heart rate (bpm) for a given conditioned athlete is a uniformly distributed random variable ranging between 40 and 60 bpm (beats per minute). What is the probability...
15. The tires manufactured by the ABC Tire Company last an average of 42,000 miles with...
15. The tires manufactured by the ABC Tire Company last an average of 42,000 miles with a standard deviation of 7800 miles. If a random sample of 100 the tires, manufactured by the ABC Tire Company is taken, what is the probability that these tires: a) will last more than 41,000 miles? b) will last less than 43,250 miles? c) will last between 41,000 and 43,250 miles?
The Chemco Company manufactures car tires that last distances 8. The Chemco Company manufactures car tires that last distances having a normal distribution with a mean of 35,000 miles and a stand...
The Chemco Company manufactures car tires that last
distances
8. The Chemco Company manufactures car tires that last distances having a normal distribution with a mean of 35,000 miles and a standard deviation of 4275 miles. If the manufacturer wants to guarantee the tires so that only 3% will be replaced because of failure before the guaranteed number of miles, for how many miles should the tires be guaranteed? 9. A random sample of 50 cars in the drive-thru of...
The mileage that car owners get with a certain kind of radial tire is normally distributed...
The mileage that car owners get with a certain kind of radial tire is normally distributed with a mean of 70,000 miles. If 97.725% of these tires lasted less than 78,000 miles, please calculate the standard deviation for the tire mileage. [Note: Please round your result for the standard deviation to the nearest integer.] [2 points] What is the probability a randomly selected tire of this type will last 65,000 miles? Please justify your answer. [1 point] Calculate the probability...
Tires last 45,000 miles on average with a standard deviation of θ = 2,700 miles. Tire...
Tires last 45,000 miles on average with a standard deviation of θ = 2,700 miles. Tire life is considered outliers if less than or equal to 36,900 or greater than or equal to ______________.
Two engineers, Philip and Ayazi, are given access to 45 prototype car tires to test for...
Two engineers, Philip and Ayazi, are given access to 45 prototype car tires to test for mileage lifetime. Philip tests all 45 tires and determines that tire performance is normally distributed with an average lifetime of 60,000 miles and standard deviation of 8,000 miles Their supervisor wants to tell the company's Board of Directors that this batch of prototype tires will last at least 50,000 miles. ) What can Philip state about the tires lasting at least 50,000 miles? b)...
3. The average number of miles (in thousands) that a car's tire will function before needing...
3. The average number of miles (in thousands) that a car's tire will function before needing replacement is 72 and the standard deviation is 12. Suppose that 8 randomly selected tires are tested. Round all answers to 4 decimal places where possible and assume a normal distribution. What is the distribution of X? X ~ N( , ) ______ What is the distribution of x¯? x¯ ~ N( , ) ______ If a randomly selected individual tire is tested, find...
STATISTICS QUIZ 6 NAME 1. The average life of a brand of automobile tire is 30,000...
STATISTICS QUIZ 6 NAME 1. The average life of a brand of automobile tire is 30,000 miles, with a standard deviation of 2,800 miles. Ir a tire is randomly selected and tested, find the probability that it will last for more than 34,000 miles. Assume the lifetime of tires is normally distributed 2. If the tires in problem #1 are to be guaranteed, so that only 4% will have to be replaced for having to short a lifetime, how long...
For a new type of tire, a racing car team found the average distance a set of tires would run during a race is 161 miles, with a standard deviation of 14 miles. Assume that tire mileage of each set is independent and follows a Normal model Give answers in decimal form rounded to four decimal places as needed. 1 If the team plans to change tires twice during a 500-mile race, what is the expected value and standard deviation...
The lifetime of a certain brand of tires is normally distributed. The average lifetime of a tire is 50,000 miles with a lifetime standard deviation of 8,400 miles. The probability that a randomly selected tire will last less than 45,000 miles is Tables Keypad 10 Points Answer 0.2758 0.0000 0.7242 0.2257 The resting heart rate (bpm) for a given conditioned athlete is a uniformly distributed random variable ranging between 40 and 60 bpm (beats per minute). What is the probability...
The Chemco Company manufactures car tires that last
distances
8. The Chemco Company manufactures car tires that last distances having a normal distribution with a mean of 35,000 miles and a standard deviation of 4275 miles. If the manufacturer wants to guarantee the tires so that only 3% will be replaced because of failure before the guaranteed number of miles, for how many miles should the tires be guaranteed? 9. A random sample of 50 cars in the drive-thru of...
Two engineers, Philip and Ayazi, are given access to 45 prototype car tires to test for mileage lifetime. Philip tests all 45 tires and determines that tire performance is normally distributed with an average lifetime of 60,000 miles and standard deviation of 8,000 miles Their supervisor wants to tell the company's Board of Directors that this batch of prototype tires will last at least 50,000 miles. ) What can Philip state about the tires lasting at least 50,000 miles? b)...
STATISTICS QUIZ 6 NAME 1. The average life of a brand of automobile tire is 30,000 miles, with a standard deviation of 2,800 miles. Ir a tire is randomly selected and tested, find the probability that it will last for more than 34,000 miles. Assume the lifetime of tires is normally distributed 2. If the tires in problem #1 are to be guaranteed, so that only 4% will have to be replaced for having to short a lifetime, how long...
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