The average life of a certain type of small engine is 10 years, with a standard...
The average life of a certain type of small engine is 10 years, with a standard deviation of 2 years. The manufacturer replaces for free all motors that fail within the warranty period. If you were willing to replace only 3% of failed engines, how long a warranty should you offer? Suppose that the duration of an engine follows a normal distribution.
Answer with 4 decimals.
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The average life of a certain type of small engine is 10 years,
with a standard...
The average life of a certain type of small motor is 10 years with a standard...
The average life of a certain type of small motor is 10 years with a standard deviation of 2 years. The manufacturer replaces free all motors that fail while under guarantee. If she is willing to replace only 3% of the motors that fail, how long a guarantee should be offered? Assume that the lifetime of a motor follows a normal distribution.
The average life of a certain type of small motor is 10 years with a standard...
The average life of a certain type of small motor is 10 years with a standard deviation of 2 years. The manufacturer replaces free all motors that fail while under guarantee. If she is willing to replace 3% of the motors that fail, how long a guarantee (in years) should she offer? You may assume that the lives of the batteries are normally distributed. A properly labeled figure of the normal distribution curve and x and z values is required...
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Suppose that the working life of a motor follows a normal distribution with an average life...
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A dishwasher has a mean life of 12 years with an estimated standard deviation of 1.25...
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A dishwasher has a mean life of 12 years with an estimated standard deviation of 1.25 years "Appliance life expectancy," 2013). Assume the life of a dishwasher is normally distributed. a.) True or False: The random variable x defines the life expectancy of a dishwasher b.) Find the probability that a dishwasher will last more than 15 years. c.) Find the probability that a dishwasher will last less than 8 years. d.) Find the probability that a dishwasher will last...
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