The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes? c. Assume that the class has 60 students and that the examination period is 90 minutes in length. How many students do you expect will be unable to complete the exam in the allotted time?

Q: The time needed to complete an exam in a college campus is normally distributed with a mean of 80…

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

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A: Refer Standard normal table/Z-table to find the probability of z=2.80.

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A: Suppose the random variable x defines the monthly household electric bill in a certain community.

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A:

Q: Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the…

A: Solution: It is given that, Population mean, 70 Standard deviation, 5 Given that Cody took his first…

Q: The mean annual cost to attend a attend a college is $44,324. Assume the distribution of annual…

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A: From the provided information, Mean (µ) = $2500 Standard deviation (σ) = $400 Let X be a random…

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A: Note: Hey there! Thank you for the question. Although the mean and standard deviation of the…

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A: PART A SOLUTION:Step 1: Determine What is AskedWe are given that the mean score for U.S. college…

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A: Let X be the price of a gallon of regular, unleaded gas across gas stations in North Carolina is…

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A:

Q: A study indicates that 18- to 24- year olds spend a mean of 120 minutes watching video on their…

A: The mean is 120 minutes and the standard deviation is 20 minutes.

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A:

Q: Five hundred youths participated in a national sport competition. Their heights averaged 110cm with…

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A: Let X be the random variable having probability distribution is,  X 0 1 2 3 4 5 P(x)  0.08 0.19…

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A:

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.