A tire company finds the lifespan for one brand of its tires is normally distributed with...
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A tire company finds the lifespan for one brand of its tires
is normally distributed with...
Please answer the following question: Truck tire life is normally distributed with a mean of 60,000...
Please answer the following question:
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. a) What is the probability that a tire will last 72,000 miles or more? b) For a set of four tires, what is the probability that the average tire life is less than 55,000 miles? c) For a set of four tires, what is the probability that the average tire life is between 57,000 and 63,000...
74. A particular brand of tires claims that its deluxe tire averages at least 50,000 miles...
74. A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8,000. A survey of owners of that tire design is conducted. From the 28 tires surveyed, the mean lifespan was 46,500 miles with a standard deviation of 9,800 miles. Using alpha = 0.05, is the data highly inconsistent with the claim? In other words, is...
2.A tire manufacturer claims that the lifetime of its tires are normally distributed with a mean...
2.A tire manufacturer claims that the lifetime of its tires are normally distributed with a mean of m = 34,000 miles and a standard deviation of σ = 1200 miles. A trucking firm using these tires suspects that the mean lifetime is less than 34,000 miles. To test the claim, the firm randomly selects and tests 54 of these tires and gets a mean lifetime of 33,390 miles. Use a significance level of a = 0.05 to test the trucking...
Mechanic sells a brand of automobile tire that has a lifeexpectancy that is normally distributed,...
Mechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 27,000 miles and a standard deviation of 2200 miles. He wants to get into a free replacement of tires That don’t wear well. How Should he word his guarantee if he is willing to replace approximately 10% of the tires?Tires that wear out by miles will be replaced free of charge. (Round to the nearest mile as needed.)
A tire company makes tires that have a normal distribution with a mean of 65,000 miles...
A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard deviation of 3000 miles prior to needing replacement. Find the probability that a tire lasts no more than 62,500 miles A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard deviation of 3000 miles prior to needing replacement. Find the probability that a tire lasts at least 68,500 miles. A tire company...
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...
The lifetime of a certain brand of tires is approximately normally distributed, with a mean of...
The lifetime of a certain brand of tires is approximately normally distributed, with a mean of 45,000 miles and a standard deviation of 2,500 miles. The tires carry a warranty for 40,000 miles.(Show work please) What proportion of the tires will fail before the warranty period? What proportion of the tires will fail after the warranty expires, but before they have lasted for 41,000 miles? Suppose a sample of 100 randomly selected tires are tested, what is the probability that...
Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean...
Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of 74,000 miles and a standard deviation of o miles. These tires come with a 55,000-mile warranty. The manufacturer of the tires can adjust o during the production process, but the adjustment of o is quite costly. The manufacturer wants to set o once and for all so that only 1% of the tires will fail before warranty expires. Find the standard deviation to...
Show all work S. The tread life a certain brand of tires is known to be...
Show all work
S. The tread life a certain brand of tires is known to be normally distributed with a mean of 50,000 miles and a standard deviation of 4,500 miles a) Determine the probability that a randomly selected tire will last longer than 62,000 miles ANSWER b) The company wishes to set the warranty so that warranty mileage be? only 3% of the tires will need to be replaced, what should the ANSWER
The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed...
The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with a mean of 32 and a standard deviation of 4. Round to the second. a) Find the 50 percentile of tire lifetimes. b) Find the tire life that has 70% above it. c) Find the two tire lives that hold the middle 15% Lower Upper d) The tire company wants to guarantee that its tires will last a certain number of miles. What...
Please answer the following question:
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. a) What is the probability that a tire will last 72,000 miles or more? b) For a set of four tires, what is the probability that the average tire life is less than 55,000 miles? c) For a set of four tires, what is the probability that the average tire life is between 57,000 and 63,000...
A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard deviation of 3000 miles prior to needing replacement. Find the probability that a tire lasts no more than 62,500 miles A tire company makes tires that have a normal distribution with a mean of 65,000 miles with a standard deviation of 3000 miles prior to needing replacement. Find the probability that a tire lasts at least 68,500 miles. A tire company...
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...
Suppose that the lifetimes of tires of a certain brand are normally distributed with a mean of 74,000 miles and a standard deviation of o miles. These tires come with a 55,000-mile warranty. The manufacturer of the tires can adjust o during the production process, but the adjustment of o is quite costly. The manufacturer wants to set o once and for all so that only 1% of the tires will fail before warranty expires. Find the standard deviation to...
Show all work
S. The tread life a certain brand of tires is known to be normally distributed with a mean of 50,000 miles and a standard deviation of 4,500 miles a) Determine the probability that a randomly selected tire will last longer than 62,000 miles ANSWER b) The company wishes to set the warranty so that warranty mileage be? only 3% of the tires will need to be replaced, what should the ANSWER
The lifetime of a certain type of automobile tire (in thousands of miles) is normally distributed with a mean of 32 and a standard deviation of 4. Round to the second. a) Find the 50 percentile of tire lifetimes. b) Find the tire life that has 70% above it. c) Find the two tire lives that hold the middle 15% Lower Upper d) The tire company wants to guarantee that its tires will last a certain number of miles. What...
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