Find the probability that a single randomly selected policy has a mean value between 162867.2 and 190801.5 dollars. P(162867.2 < X < 190801.5) = (Enter your answers as numbers accurate to 4 decimal places.) Find the probability that a random sample of size n = 57 has a mean value between 162867.2 and 190801.5 dollars. P(162867.2

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Q: 9% of all cars fail the emissions inspection, find the probability that in a sample of 125 cars, 16…

A: Given n=125 P=0.09

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A: Note: Hi there! Thank you for posting the question. As there are several independent questions,…

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A: Given that  Mean=44.7 P(X&gt;53.7)=0.26

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Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: X¯ ~ N(μx¯ , σx¯) μx¯=μ=142 σx¯=σn=1349=1.86 N = Normal distribution

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A: Given information:

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A: We have given, The mean number of sales of houses is x¯=56. And the standard deviation is σ=36.

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A: Given : X~Nμ=66,σ=17

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A: Continuous uniform distribution:A random variable X is said to have the rectangular distribution or…

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Q: 1, 77, and 82.

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Q: Find the probability that the mean weight of a sample of 25 bookbags will exceed 7 pounds.

A: Here use central limit theorem and standard normal distribution table for probability from z score

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Q: O A. 0.8615 OB. 0.8819 O C. 0.0062 OD. 0.9938

A: Let X be the random variable from normal distribution with mean (μ) = 124, standard deviation (σ) =…

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A: a) If the probability of a defective bolt is 0.1. Given that there are total of 400. That is, n=400…

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Q: Suppose that a distribution of 500 items has mean 115 and standard deviation 4. Find the​ z-score of…

A: The mean is 115 and the standard deviation is 4.