Energetic Co., a battery manufacturer, claims their battery lasts for 69.83 months with a standard deviation of 10.135 months. You randomly sample 29 of these batteries. Assuming the distribution for the battery lifetime is approximately normal, what is the probability the average lifetime is greater than 68.34?

Q: Infant birth weights are normally distributed with a mean of 8 pounds and a standard deviation of…

A: Answer: As per the given data, Let X represent infant birth weights Here X is normally distributed…

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Q: Suppose the weight of an adult male Labrador is normally distributed with u=71.2 pounds and a…

A: Mean()=71.2standard deviation()=3.4

Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

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Q: A company makes batteries that have life spans with a mean of 3000 hours and standard deviation of…

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Q: The length of an episode of the hit TV show, Fake Blood, is normally distributed with a mean of 62…

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A:

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Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

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Q: Body temperatures of adults are normally distributed with a mean of 98.60℉ and a standard deviation…

A: Given information Mean (µ) = 98.6 F Standard deviation (σ) = 0.73 F   Probability of a healthy adult…

Q: The height of an adult male in the United States is approximately normally distributed with a mean…

A: From the provided information, Mean (µ) = 69.0 Standard deviation (σ) = 2.6  X~N (69.0, 2.6)

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Q: In a study of the health effects of cigarettes, a random sample of 32 filtered cigarettes was…

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Q: The composite scores of individual students on the ACT college entrance examination in 2019 followed…

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A: Given that mean =1.85,s.d =1.02,n=55,x bar =1.88

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Q: A 2006 Toyota Echo has a mean gas mileage of 32 miles per gallon (mpg) with a standard deviation 5…

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Q: he reading speed of second grade students in a large city is approximately​ normal, with a mean of…

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Q: daily revenue of a computer repair shop is known to be normally distributed with a mean of $7129 and…

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Q: The producer of a weight-loss pill advertises that people who use the pill lose, after one week, an…

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