Recent report in Times showed a typical family of four spends $490 per month on food with a mean of $490 and a standard deviation of $30. a) What is the probability that a family of four spends exactly $430 per month on food? b) What is the probability that a family of four spends more than $430 per month on food? c) What is the probability that a family of four spends between $430 and $550 per month on food?

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A: Given DataMean = 80Standard Deviation = 10a)Probability of completing the exam in one hour or less

Q: A study indicates that 18- to 24-year olds spend a mean of 145 minutes watching video on their…

A: given data normal distributionμ = 145 minutesσ = 20 minutes

Q: Weights

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A:

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A: Given Information: The distribution of tips has a model that is slightly skewed to the left​, with a…

Q: 2. The average gas mileage of an Audi A5 Cabriolet car is 39.5 miles per gallon. If the gas mileages…

A: given information According to given question random variable (x = average gas mileage) follows…

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A: Let "X" be the time taken by a boy in secondary school to run a mile.

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A: Population mean, μ=23 Population sd, σ=4

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A: According to the given information in this questionWe need to answer two parts

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A: GIVEN DATA normal distributionμ = 72σ = 4

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A: Given that the  price of paid apps for a certain category is normally distributed with, Mean = 3.5…

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A:

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.