Last year, the revenue for financial services companies had a mean of 7070 million dollars with a standard deviation of 1818 million. Find the percentage of companies with revenue between 5050 million and 9090 million dollars. Assume that the distribution is normal. Round your answer to the nearest hundred

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A: We know, (1 foot = 12 inch)Given;X: height of womenmean(X)=μ=5'4''(i.e. 5 foot 4 inches)=64''(i.e.…

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A: Mean:The formula for finding mean is shown below:

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A:

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A: Given Sample size = 20 Sample sum = 812 Sample mean = 40.6

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A:

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A: Given that.   X~N( μ , ?)   μ=4373    , ?=610   Z-score =( x - μ )/?

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A: A recent survey found that 61​% of all adults over 50 wear glasses for driving. In a random sample…

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A: Solution

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A: see

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A: It is given that Min = 4, Median = 25 and maximum = 86

Q: what range of raw scores makes up the middle 40%

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A:

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A: The mean is 64 inches and the standard deviation is 2.5 inches.

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A: In one town, the number of pounds of sugar consumed per person per year has a mean of 6 pounds and a…

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A: Introduction: Denote μ as the true average number of days that college students get a haircut.

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A: Normal Distribution: Understand the properties of the normal distribution, including the mean (μ)…

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A: Given data,  N~(161.61,48.95)  i.e., μ=161.61σ=48.95   If n=34 P(X>250)=?