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The average height of flowering cherry trees in a certain
The average height of flowering cherry trees in a certain nursery is 11.5 feet. If the heights are normally distributed with a standard deviation of 1.5 feet, find the probability that a tree is less … read more
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The average age of doctors in a certain hospital is 50.0
The average age of doctors in a certain hospital is 50.0 years old. Suppose the distribution of ages is normal and has a standard deviation of 6.0 years. If 9 doctors are chosen at random for a commit… read more
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The average hourly wage of workers at a fast food restaurant
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The mean weight of loads of rock is 47.0 tons with a
The mean weight of loads of rock is 47.0 tons with a standard deviation of 8.0 tons. If 24 loads are chosen at random for a weight check, find the probability that the mean weight of those loads is le… read more
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The average age of vehicles registered in the United States
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The average gas mileage of a certain model car is 28.0 miles
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Mrs. Smith's reading class can read an average of 175 words
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Normal Distribution the average gas mileage of a certain
Second opinion] Normal Distributionthe average gas mileage of a certain model car is 28.0 miles per gallon. If the gas mileages are normally distributed with a standard deviation of 0.4 miles per gall… read more
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The average length of a hospital stay for all diagnoses is
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7. The average length of crocodiles in a swamp is 11.5 feet.
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The average age of doctors in a certain hospital is 50.0
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Let x represent the dollar amount spent on supermarket
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In a random sample of six microwave​ ovens, the mean repair
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1. Consider a population proportion p = 0.68. a-1. Calculate
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4. The personnel office at a large electronics firm regularly
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Z is a standard normal random variable. (i) Find P(Z<1.5) (ii)
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TutoringCenter is closed today, and I need to check 9 out of
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