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Normal Distribution
Page 7
Questions (2,066)
Assume that women’s heights are normally distributed with a mean of 63.6inches and a standard deviation of 2.5inches. If 90
4 answers
asked by
Help
5,492 views
the amount of pyridoxine in grams per multiple vitamin is normally distributed with mean = 110 grams and standard deviation = 25
3 answers
asked by
james
1,541 views
Scores on a marketing exam are known to be normally distribute with mean and standard deviation of 60 and 20, respectively. The
4 answers
asked by
Sam
1,432 views
5) The product is sold in packets whose masses are normally distributes with mean of 1.42 kg and a standard deviation of 0.025
3 answers
asked by
Koylar
786 views
Find z such that 7.1% of the standard normal curve lies to the left of z ?
3 answers
asked by
leia
2,288 views
6) The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a
4 answers
asked by
Anonymous
2,711 views
A brewery's filling machine is adjusted to fill bottles with a mean of 31.5 oz. of ale and a variance of 0.003. Periodically, a
4 answers
asked by
Tom 6
1,231 views
Find the area under the standard normal distribution curve for the following z-values:
a. Between z= 0 and z = 2.01 b. Between z
4 answers
asked by
Luna
1,537 views
In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5.
4 answers
asked by
StudentD
2,315 views
IQ scores are normally distributed with a mean u = 100 and a standard deviation o =15. Based on distribution, determine
% of IQ
4 answers
asked by
Dianne
3,513 views
The weights of steers in a herd are distributed normally. The standard deviation is 200 lbs and the mean steer weight is 1200
3 answers
asked by
Anonymous
1,833 views
9. Assume the weight, W, of a randomly selected adult has a normal distribution with a mean
of 175 pounds and a standard
4 answers
asked by
Josh
1,033 views
Find the (two) z-scores that bound the middle 40% of the standard normal distribution. please show the work.
3 answers
asked by
tina
1,337 views
A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys
4 answers
asked by
jackie
2,613 views
The number of customers who enter a supermarket each hour is normally distributed with a mean of 600 and a standard deviation of
3 answers
asked by
Tony
3,300 views
The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 360 grams and a standard
1 answer
asked by
Shon
1,417 views
The monthly income of residents of Daisy City is normally distributed with a mean of $3000 and a standard deviation of $500.
a.
4 answers
asked by
V
1,379 views
Scores on a test are normally distributed with a mean of 68.2 and a standard deviation of 10.4. Estimate the probability that
3 answers
asked by
Jean
1,769 views
At a local restaurant, the amount of time that customers have to wait for their food is normally distributed with a mean of 24
3 answers
asked by
Daniela
343 views
The total area under the normal distribution curve is equal to a probability of
3 answers
asked by
Anonymous
2,403 views
A machine is used to fill cans of soup with nominal volume of 0.5 litres.The quantity of soup actually delivered is normally
3 answers
asked by
Raj
604 views
Let X denote the time in hours needed to locate and correct a problem in the software that governs the timing of traffic lights
4 answers
asked by
Aryaa
1,753 views
find area of indicated region under the standard normal curve
the numbers are -.45 and 2.11 its shaded more towards the right i
4 answers
asked by
feather
2,359 views
7. a factory has a machine that makes steel rods. The length of the rods that the machine makes follows a normal distribution
4 answers
asked by
cait
2,358 views
Hi, I am having a lot of trouble with Normal Distribution. I do online school and this lesson didn't really explain how to
3 answers
asked by
anon
940 views
TThe probability that an observation, following a normal distribution, will lie within μ ± 1.3σ is
a. 9.5 % b. 19.0% c. 40.3%
1 answer
asked by
xalane
432 views
An instructor in a large lecture class found at the end of the semester that total points scored by students in his class was
3 answers
asked by
Tara
1,213 views
The time it takes to install the new telephone is found to be normally distributed with the mean of x minutes and a standard
3 answers
asked anonymously
41 views
Find the value of a if: P(Z < a) = 0.0359
3 answers
asked anonymously
24 views
The life of an electric light bulb is known to be normally distributed with a mean of 2000 hours and a std. of 120 hours. Find
4 answers
asked by
Heidi
1,242 views
The weight of certain population of young females is approximately normally distributed with the mean of 66 kg and a standard
3 answers
asked anonymously
48 views
Times for a surgical procedure are normally distributed. There are two methods. Method A has a mean of 28 Minutes and a standard
3 answers
asked by
Rontheman
3,704 views
The weight of certain population of young females is approximately normally distributed with the mean of 66 kg and a standard
3 answers
asked anonymously
45 views
The volumes of soda in quart soda bottles are normally distributed with a mean of 32.3 oz and a standard deviation of 1.2 oz.
4 answers
asked by
olivo
3,640 views
Suppose x has a normal distribution with mean μ = 35 and standard deviation σ = 9.
(a) Describe the distribution of x values
3 answers
asked by
larae
1,111 views
The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated
4 answers
asked by
B
4,555 views
As reported in Runner's World magazine, the times of the finishers in the new york 10 km run are normally distrubted with a mean
4 answers
asked by
Anonymous
1,767 views
The breaking strengths (say, y) for one foot square samples of a particular synthetic fabric are approximately normally
3 answers
asked by
Taylor
1,604 views
A vending machine is designed to dispense a mean of 7.6 oz of coffee into an 8-oz cup. If the standard deviation of the amount
3 answers
asked by
vinnie
1,072 views
A normal distribution has a mean of 36 and standard deviation of 4. What proportion of the
distribution consisted of scores
3 answers
asked by
Robbie
602 views
A set of data is normally distributed with a mean of 200 and standard deviation of 50.
• What would be the standard score for a
3 answers
asked by
Dawn
600 views
Suppose an automobile association reports that the average time it takes to respond to an emergency call is 25 minutes. Assume
3 answers
asked by
Renita
875 views
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 166 and a variance of 4.
4 answers
asked by
Anna Swain
408 views
I'm kinda stuck on my math homework, does anyone know how to do it?
The results of a blood test at a medical lab are normally
3 answers
asked by
Andy
1,750 views
Under what circumstances does the sampling distribution of the proportion approximately follow the normal distribution?
3 answers
asked by
Dan
1,786 views
Why might the following not be normally distributed? (a) The time it takes you to drive to the airport, (b) The annual income
4 answers
asked by
Anonymous
515 views
Which of the following statements are correct?
a. A normal distribution is any distribution that is not unusual. b. The graph of
4 answers
asked by
Michelle
4,625 views
This is a word problem. "We know that for certain workers the mean wage is $5/hr with a standard deviation of $.50. We need to
4 answers
asked by
Tiffany Johnson
1,360 views
Evan earned a score of 610 on Exam A that had a mean of 650 and a standard deviation of 40. He is about to take Exam B that has
3 answers
asked by
Daniela
427 views
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 9.5 years, and standard deviation of
3 answers
asked by
peniis
387 views
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Parent Categories (44)
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