The daily sleep duration among college students is normally distributed with a mean of 7.13 hours and standard deviation of 1.67 hours.  If you plan to take an SRS of size 50, what is the mean of your average time?

Q: The cruising altitudes for a Boeing 747 are normally distributed with a mean of 35,105 feet with a…

A: Solution

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Solution: Let X be the time a patient of a medical center spends waiting for an appointment. From…

Q: Suppose the exam average in a class is 82% with a standard deviation of 6. What proportion of…

A:

Q: The ages of the members of a popular ski club is normally distributed with a mean of 46 years and a…

A: Given that the ages of the members of a popular ski club is normally distributed with a mean of 46…

Q: The lengths of pregnancies are normally distributed with a mean of 280 days and a standard deviation…

A:

Q: The weights of tablets are normally distributed with mean 254 mg and standard deviation 4 mg.  What…

A:

Q: The admission committee of AUCA passes 61% of those who took the exam. If the scores follow a normal…

A: We have given that.   X~N( μ , ?^2 )   μ =350 , ? =25   Z-score =( x - μ )/?

Q: The effect size is a measure of the magnitude of a treatment effect in standard deviation units.…

A: Given that, The effect size is a measure of the magnitude of a treatment effect in standard…

Q: he distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Given data,μ=35σ=12P(11<X<35)=?

Q: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of…

A: Let X be the length of the steel rods. Then X~N (144.3,0.8) i.e. µ=144.3 and σ=0.8

Q: Assume that women have heights that are normally distributed with a mean of 63.6 inches and a…

A:

Q: The distribution of heights of adult Filipino is approximately normal with a mean of 69 inches and…

A:

Q: What proportion of skiers will finish the race in exactly one minute?

A: The tume it takes for downhill skiers to finish a race follows a Normal distribution with a mean of…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 262 days…

A:

Q: How high must a 2016 Vehicles gas mileage be to fall in the top 15% of all vehicles? normal mean is…

A: Given information: normal mean is 23.0mpg standard deviation is 4.9mpg

Q: The mean BMI score for dieters on the Jenny Craig weight loss program is 38.5, and the standard…

A: The normal distribution: A continuous random variable X is said to follow normal distribution with…

Q: ticular fruits weight are normally distributed with a mean of 285 grams and a standard deviation of…

A: According to the sum, A particular fruit weight is normally distributed with a mean of 285 grams and…

Q: What proportion of people has diastolic blood pressure less than 80?

A:

Q: For a social club, the members had a mean age of 68 and a standard deviation of 10 years.  What is…

A: The mean is 68 and the standard deviation is 10.

Q: are normally distributed with a mean of 100 and a standard deviation of 15. What IQ is in the 90th…

A: Kwe have to find out given probabiity..

Q: Suppose you organized a​ 10-kilometer race in which the times were normally distributed with a mean…

A: Let X be any selected finishing time. Here, we have to find the percentage of runners took longer…

Q: The fuel efficiency of cars currently registered in the Commonwealth of Virginia is normally…

A: X follows a Normal distribution with mean = 24 and S.D = 6 Then z=(x-mean)/SD = (x-24)/6  follows…

Q: the grouped data?

A:

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 270 days…

A: Let "X" be the lengths of pregnancies in a small rural village in days.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

Q: A bank loan officer rates applicants for credit. The ratings can be described by a normal model with…

A: Given: μ = ​200 σ = 50

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: The width of an A4 piece of paper is  normally distributed with a mean of 210  mm and a standard…

A: The width of an A4 piece of paper is normally distributed with a mean of 210 mm and a standard…

Q: Americans love ice cream .The annual per capita consumption of ice cream ,in pounds ,in the united…

A: We have given that,  X be the random variable from normal distribution with mean (μ) = 16.5 and…

Q: 21 year old men rates at rest are normally distributed with a mean of 70 beats per minute, and a…

A: Given that   21 year old men rates at rest are normally distributed Mean (μ)=70 beats per minute…

Q: Can the standard deviation of a data set be zero

A: Standard deviation can not be negative.

Q: The amount of Jen's monthly phone bill is Normally distributed with a mean of $ 76 and a standard…

A: Answer: Using the given data, Let X: Jen's monthly phone bill amount X is normally distributed with…

Q: The playing life of a Sunshine radio has a Normal distribution with a mean of 600 hours and a…

A: The playing life of a radio is normally distributed with mean 600 hours and standard deviation of…

Q: In each of Exercises, we have provided a sample mean, sample size, and population standard…

A: The hypotheses are given below:

Q: The time it needs a communications worker to arrange a domestic phone call is normally distributed…

A: It is given that the mean is 50 seconds and standard deviation is 8 seconds.

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Solution: Let X be the time a patient of a medical center spends waiting for an appointment. From…

Q: The annual per capita consumption of oranges (in pounds) in the United States  can be approximated…

A: It is given that the mean and standard deviation are 19.2 and 4, respectively.

Q: standardized test has a pop. mean of 152 and a standard deviation of 16. What would be the median…

A: Given that Mean=M=152, Standard Deviation=Sd=16 X~N(M=152,Sd=16)