The time required to complete a final examination in a particular forestry subject is normally distributed, with a mean of 100 minutes and a standard deviation of 15 minutes. What is the probability of the following?       (a) A student will complete the exam in at most 90 minutes? (b) A student will complete the exam in more than 75 minutes but less than 95 minutes? (c) Assume that the class has 60 students and that the examination period is 2 hours in length. How many students do you expect will be unable to complete the exam in the allotted time?

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A: given data normal distributionμ = 190 cmσ = 7.2 cm

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A:

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A:

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A:

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A: Given,mean(μ)=526standard deviation(σ)=113

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Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

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A: Given that  Mean = 515  Standard deviation = 170 Sample size = 35

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A: Given,n=50p=0.05A random variable X~Binomial(n=50 . p=0.05)P(X=x)=50x0.05x1-0.0550-x   ;…

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A: We have to find probability using z table.

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A:

Q: Suppose the salaries of a company that pays to its employees are normally distributed with an…

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Q: The maternity ward at a certain hospital in a certain country in Africa is one of the busiest in the…

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A: Given problem Given that

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A: given: mean (μ)= 7.5 standard deviation(σ)=2.5

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A:

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A:

Q: Suppose IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What…

A: Let X denote the IQ scores and it follows normal distribution That is, X follows N(μ=100,σ=15) The…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: Given n=40 Standard deviations=175 Mean=500 X-bar=526

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.