A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 460 seconds and a standard deviation of 50 seconds. Find the probability that a randomly selected boy in secondary school can run the mile in less than 345 seconds.

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A: We have to find probability..

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: From the provided information,Mean (µ) = 162000Standard deviation (σ) = 36000Sample size (n) = 58

Q: Five hundred children participated in a field demonstration. Their heights averaged 110cm with a…

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Q: . What is the probability that the student will get into a college whose entrance score is 550?

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A:

Q: The distribution of scores for the third exam in a statistics course has a mean of 74 and a standard…

A: Given Information: Mean, μ=74 Standard Deviation, σ=15 Sample Size, n=36

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A: The probability value is calculate by means of standard normal variate with the random variable,…

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A: given data, normal distributionμ=40σ=12n=4p(x¯>49)=?

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Q: The mean height of male college students in a large city is 68 inches and the standard deviation is…

A: Solution

Q: A final exam in Math150 has a mean of 73 with standard deviation 7.8. If 24 students are randomly…

A:

Q: A bank's loan officer rates applicants for credit. The rating are normally distributed with a mean…

A: From the given information,   Mean = 705 Standard deviation = 32 Sample size = 50

Q: The Monthly salaries of teachers at Los Angeles Trade Tech are normally distributed with a mean of…

A: Given information: The monthly salaries of teachers at Los Angeles Trade Tech are normally…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: we haven=90

Q: The average GPA at a college is 2.79 with a standard deviation of 0.6. Find the probability that 7…

A: Let X, be the random variable of average GPA at a college follows Normal distribution with a mean…

Q: The population mean is 20 inches and population standard deviation is 4 inches. A random sample of…

A: mean = 20 s =4

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: On average, the fasting blood glucose for pregnant women is 80 with a standard deviation of 10. You…

A: Let X be the fasting blood glucose for pregnant women.Given, µ=80 and σ=10.

Q: The weights of college football players are normally distributed with a mean of 193 pounds and a…

A: Mean = 193 Standard deviation = 53

Q: About 78​% of all female heart transplant patients will survive for at least 3 years. Ninety…

A: From the given information, the sample size is 90 and the  proportion is 78%. The mean of the sample…

Q: The average credit card debt for college seniors is $3262. If the debt is normally distributed with…

A: Let X be the random variable from normal distribution with mean (μ) = $3262 and standard deviation…

Q: In a recent year, grade 7 Maryland State public school students taking a mathematics assessment test…

A: In a recent year, grade 7 Maryland State public school students taking a mathematics assessment test…

Q: A final exam in science 160 has a mean of 73 with a standard deviation of 7.8. If 25 students are…

A: Given information- Population mean, µ = 73 Population standard deviation, σ = 7.8 Sample size, n =…

Q: A final exam in Science 150  has a mean of 80 with a standard deviation of 8. If 25 students are…

A: Given: μ = 80 σ = 8 n = 25

Q: The heights of athletes at a college have mean 69.5 inches and standard deviation 3.3 inches. Find…

A: From the given information,   Mean= 69.5 Standard deviation = 3.3   The objective is to find the…

Q: Data from the Bureau of Labor Statistics’ Consumer Expenditure Survey show that annual expenditures…

A: Given information- For the year 2001- Population mean, µ = $235 Population standard deviation, σ =…

Q: A running back on the Spartans football team gains an average of 3.5 yards per carry with a standard…

A: Given : A running back on the Spartans football team gains an average of 3.5 yards per carry with a…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A:

Q: A physical fitness association is including the mile run in its secondary-school fitness test. The…

A: According to the given information in this question We need to find the following probability

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A: The probability the elevator will be over capacity is obtained below:From the given information X…

Q: Find the probability that a single randomly selected salary that doesn't exceed 181000 dollars.…

A: The random variable X is defined as the salary for graduates which follows normal distribution with…

Q: The life of a vacuum cleaner is normally disyributed with mean 5 years and standard deviation 2…

A:

Q: The average speed of cars on 495 is 74 mph with a standard deviation of 6. What is the probability…

A: GivenMean(μ)=74standard deviation(σ)=6

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.