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Normal Distribution
Page 5
Questions (2,033)
Consider the standard normal distribution with mean μ = 0, and standard
deviation σ = 1 a. What is the probability that an
4 answers
asked by
onkar
1,202 views
Assuming that the heights of college women are normally distributed with mean 62 inches and standard deviation 3.5 inches, what
5 answers
asked by
Jack
2,152 views
Suppose heights of men are normally distributed with a mean 69.0 inches and standard deviation 2.8 inches. What percent of men
4 answers
asked by
Anonymous
2,203 views
Scores on an english test are normally distributed with a mean of 33.6 and a standard deviation of 8.3. Find the 41st
4 answers
asked by
English Test Scores
2,333 views
For a normal distribution with a mean of m = 80 and a standard deviation of s = 20, find the proportion of the population
4 answers
asked by
Lyndon
1,507 views
find z such that 5.2% of the standard normal curve lies to the left of z
4 answers
asked by
John
2,769 views
Suppose that you are designing an instrument panel for a large industrial machine. The machine requires the person using it to
4 answers
asked by
Lamont Sanford
3,438 views
In a normal distribution with the mean being 500 and the standard deviation being 100, what raw score separates the top 40% of a
4 answers
asked by
Jessica
2,275 views
Given (μ) = 500, and σ = 100. What percentage of the SAT scores falls:
A) Between 500 and 600? The percentage falls 1 σ above
4 answers
asked by
Taylor
3,082 views
A normal distribution has a mean of 98 and a standard deviation of 6. What is the probability that a randomly selected x-value
4 answers
asked by
jenny
2,220 views
Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this
4 answers
asked by
Anonymous
3,299 views
The Weight of a small Starbucks coffee is normally distributed random variable with a mean of 360 grams and a standard deviation
4 answers
asked by
Kelly
3,337 views
The mean of a set of normally distributed data is 550 and the standard deviation is 35.
What percent of the data is between 515
4 answers
asked by
nichole
714 views
Using diaries for many weeks, a study on the lifestyles of visually impaired students was conducted. The students kept track of
4 answers
asked by
Amy
4,006 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
Chrystal
3,870 views
A farmer cuts hazel twigs to make into beam poles to sell at the market.He says that the sticks are each 240cm long but in fact
7 answers
asked by
Raj
1,230 views
The average middle-distance runner at a local high school runs the mile in 4.5 minutes, with astandard deviation of 0.3 minute.
4 answers
asked by
Bailey
869 views
The yearly rainfall in Vancouver, B.C. follows a normal distribution with standard deviation 172 mm. In 20% of years, the city
4 answers
asked by
May
3,718 views
Many companies "grade on a bell curve" to compare the performance of their managers and professional workers. This forces the
4 answers
asked by
Allex
3,617 views
In a standard Normal model, what value of z cut off the region described as the lowest 1.5%?
3 answers
asked by
Jamie
904 views
A used car dealership has found that the length of time before a major repair is required on the cars it sells is normally
4 answers
asked by
victoria
2,069 views
A normal distribution has a mean of 100 and standard deviation of 20. What is the
probability of randomly selecting a score less
4 answers
asked by
Robbie
1,082 views
A vertical line is drawn through a normal distribution at z = 0.50, and separates the
distribution into two sections. What
4 answers
asked by
Robbie
2,546 views
If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal
5 answers
asked by
Pacifico
5,101 views
1. The age of professional racecar drivers is normally distributed with a mean of 30 and a standard deviation of 6. One driver
4 answers
asked by
honeybee
610 views
Determine the area under the standard normal curve between z = -1.53 and 0.
4 answers
asked by
Anonymous
2,382 views
10th grade New York public school students taking a standardized English test produced test scores that were normally
4 answers
asked by
jill
1,221 views
suppose a normal distrubtion has a mean of 25 and a standard deviation of 2. what is the area under the curve between 23 and 27
4 answers
asked by
elizabeth
1,010 views
John drives to work each morning and the trip takes an average of μ = 38 minutes.
The distribution of driving times is
5 answers
asked by
Robbie
3,854 views
For the overall population, the IQ scores follow the normal distribution with mean equal to 100 and variance equal to 225. What
4 answers
asked by
Anonymous
676 views
The scores on an exam are normally distributed, with a mean of 77 and a standard deviation of 10. What percent of the scores are
4 answers
asked by
Skye
1,932 views
according to a manufacturer, the average weight of a cereal box they produced is 20 ounces with a standard deviation of 0.5
2 answers
asked by
jess
898 views
The commute times during rush hour traffic on a local interstate have a mean of 25 minutes and a standard deviation of 5
4 answers
asked by
cinco de mayooo
2,152 views
Suppose that people's heights (in centimeters) are normally distributed, with a mean of 170 and a standard deviation of 5. We
4 answers
asked by
Anonymous
2,360 views
The weights of ripe watermelons grown at Mr. Smith's farm are normally distributed with a standard deviation of 2 lb. Find the
4 answers
asked by
Tom614
2,569 views
Assume that the points scored by the winning teams for all NCAA games follow a bell-shaped distribution. Using the mean of 76.5
3 answers
asked by
Shellie
1,971 views
At one college, GPAs are normally distributed with a mean of 2.6 and a standard deviation of 0.6. What percentage of students at
4 answers
asked by
john
2,325 views
Suppose the people living in a city have a mean score of 48 and a standard deviation score of 7 on a measure of concerns about
4 answers
asked by
diane
1,556 views
The weight of a bag of corn chips is normally distributed with a mean of 22
ounces and a standard deviation of 0.5 ounces. -The
4 answers
asked by
Ryan
4,330 views
If the hourly sales at a certain register in a supermarket are normally distributed with a mean of $650 and a standard deviation
4 answers
asked by
Anonymous
469 views
Find the area under the standard normal curve to the right of z = -1.25.
4 answers
asked by
Melissa
9,592 views
The scores on the GRE are normally distributed with a mean of 541 and a standard deviation of 89. Use the 68-95-99.7 rule to
4 answers
asked by
Scott
5,362 views
Obtain the area under the standard normal curve to the right of z=1.32
Round your answer to four decimal places. A = the
4 answers
asked by
Maryan
1,276 views
The daily sales of a retail store are normally distributed with a standard deviation of $500. If the probability that sales will
4 answers
asked by
Anonymous
2,208 views
The heights of the trees in a forest are normally distributed, with a mean of 25 meters and a standard deviation of 6 meters.
4 answers
asked by
Alison Magana
2,849 views
The distribution of students’ heights in a class of 100 students is normal, with a mean
height of 66 inches and a standard
4 answers
asked by
Mireya
1,644 views
Given that z is a standard normal random variable, compute the following probabilities (to 4 decimals).
P(z -1.0) P(z -1.0) P(z
4 answers
asked by
vanessa
3,324 views
Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the
5 answers
asked by
abc
2,003 views
Consider a normal distribution with mean 20 and standard deviation 3. What is the probability a value selected at random from
4 answers
asked by
erin
2,360 views
How would I go about solving these problems?
In Exercise 9 we suggested the model N(1152,84) for weights in pounds of yearling
4 answers
asked by
Courtney
1,470 views
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