Suppose that students who finished JHS in a public school get an average of 5.6 hours of sleep each night with a standard deviation of 1.7 hours. What is the probability that a random selected group of 35 public school students get more than 6 hours of sleep, on the average each night? A. 3,600 B. 4,000 C. 25.36% D. 0% E. 2.75; 0.10 F. Not among the choices G. 3.78; 0.15 H. 33.40% I. 8.38%

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A: From the provided information, Population mean (µ) = 45 kgs Population standard deviation (σ) = 5…

Q: in a certain region, the mean annual salary for electricians is $58,650. Let x be a random variable…

A: GivenMean(μ)=58650standard deviation(s)=1890sample size(n)=40

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: A normal distribution is a continuous type probability distribution.It is also known as a…

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: a. The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the…

Q: A certain brand of automobile tire hae a life expectancy that ie normally distributed with a mean of…

A:

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 75 mph and…

A: given data, normal distribution, μ=75σ=9 we have to find out the given probability.

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 71 mph and…

A: Solution: Let X be the speed for a randomly selected car. From the given information, X follows…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 71 mph and…

A: b) Given that μ=71 and σ=9. Let X be the speed for a randomly selected car. The probability that it…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 79 mph and…

A: Given observation Mean = 79 mph Standard deviation = 7 mph The distribution of x is Normal i.e. X ~…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 70 mph and…

A: Given Mean=mu=70 Standard deviation=sigma=10

Q: A study shows that the normal time that a customer occupied a table in a fine dine restaurant is 1.2…

A:

Q: airline carriers 300 passengers and has doors with a height of 76 inch. heights of men are normally…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: Solution

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 76 mph and…

A: Mean(μ)=76 standard deviation(σ)=5

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 71 mph and…

A:

Q: d. What percentage of terminals will last between 2.5 and 4.5 years? e. If the manufacturer…

A: Mean(µ) = 4 yearsStandard deviations (σ) = 10/12 = 0.83 yearX ~ N (µ, σ )= N(4, 0.83)

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: A continuous random variable X is said to follow Normal distribution with parameters μ and σ2 if its…

Q: Suppose you sample 2 students from every classroom where a class is being held at Duke University at…

A: Solution The distribution of the population is not given and sample size is not large to apply the…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 78 mph and…

A:

Q: Cigarette Smoking A researcher found that a cigarette smoker smokes on average 29 cigarettes a day.…

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Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: The mean is 64 and the standard deviation is 2.3.

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 75 mph and…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: A production line in a factory, assembles laptops. A random sample of assembly time of 36 laptops…

A: Given, n=36 laptopsThe population mean μ=25 minutes.Standard deviation σ=6 minutes.The probability…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 73 mph and…

A:

Q: Suppose that the mean height of Grade 11 male students in a certain school is 170 cm, and that the…

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Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: Given Mean=64 Standard deviations=2.4

Q: Assume that the heights of 6000 male students at a university are normally distributed with mean…

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Q: The mean number of hours that American women who worked outside of the home per week was 34.6 hours…

A: Let X denote the number of hours that American women worked outside the home per week. We write the…

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A: The height for martin adult males is normally distributed. Mean (μ ) = 67 inches Standard deviation…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 71 mph and…

A: Answer:- Given, Mean, µ = 71 mph  Standard deviation, σ = 10 mph. Let, X be the speed for a randomly…

Q: O An electrical firm manufactures light bulbs that have a length of life tha is normally distributed…

A: Given that, Mean, mu= 800 Standard deviation, sigma= 40 We know that, Z Score= (X-mu)/sigma

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A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: The weights of sheep available for sale for during Eid Qurban is normally distributed with a mean…

A: From the provided information, Population mean (µ) = 45 kgs Population standard deviation (σ) = 5…

Q: According to a study done by UCB students, the height for Martian adult males is normally…

A:

Q: of 1.7 hours. What is the probability that a randomly selected group of 35 high school students get…

A: Let X be the random variable that the sleep hours of teenagers that attend public high schools.…

Q: Suppose that the number of points scored in a game comes from a normal population with an average of…

A: Here points scored follows Normal distribution with mean 12 and SD 9. Here we need to use the…

Q: a. What is the distribution of x? a N( 111 42 b. For the group of 7, find the probability that the…

A: According to the answering guidelines , we can answer only three subparts of a question and the rest…

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 80 mph and…

A: Note: Please repost part d as i can answer only 3 subparts as per my policy.   Given data, μ=80σ=5

Q: Suppose that the speed at which cars go on the freeway is normally distributed with mean 69 mph and…

A: Z-scores are the scores associated with the standard normal distribution.  Given a random variable X…

Q: Suppose that an airline uses a seat width of 16.7 in. Assume that men have hip breadths that are…

A: Mean = 14.2 Standard deviation = 1