A recent survey found that 61% of all adults over the age of fifty wear glasses for driving. In a random sample of 80 adults over the age of fifty, use the binomial distribution to determine what is the mean and standard deviation of those that wear glasses. Select one: a.mean: 31.2; standard deviation: 4.36 b.mean: 31.2; standard deviation: 6.99 c.mean: 48.8; standard deviation: 4.36 d.mean: 48.8; standard deviation: 6.99

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A: as we know empirical rule:  approximately 68 -95 -99.7% data fall within 1σ-2σ-3σ of μ.

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A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

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A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

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A: GivenMean(μ)=750standard deviation(σ)=60

Q: video game c

A: given, sample size(n) = 1500 sample mean (x̄) = 115 sample stadard deviation (s) = 11

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A: GivenMean(μ)=8.2standard deviation(σ)=1sample size(n)=60

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A:

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A:

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A: The provided data is,

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A:

Q: what is the value of the standard deviation of the weekly earnings of the bus drivers?

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A:

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A: Formula : Mean = np Standard Deviation  :

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A: Given that  μ=527σ=112

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A: TI Calculator

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A: 25th Percentile = P(Z <z ) = 0.25 For normal table  P(Z < -0.67 ) = 0.2514 Hence, 25th…

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A: Solution: Let X be the speed of a vehicle along a stretch of highway. From the given information, X…