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Normal Distribution
Page 3
Questions (2,036)
A final exam in math 160 has a mean of 73 with a standard deviation 7.73. Assume that a random sample of 24 students is selected
2 answers
asked by
Latraina
105 views
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What percentage of people have an IQ score
4 answers
asked by
kiki
54 views
The age of customer for a particular retail stone follows a normal distribution with a mean of 37.5 years and standard deviation
1 answer
asked by
Birhanu
75 views
The numbers of cookies in a shipment of bags are normally distributed, with a mean of 64 and a standard deviation of 4. What
1 answer
asked by
Helloooo
104 views
Let X be a standard normal random variable. Another random variable is determined as follows. We flip a fair coin (independent
6 answers
asked by
Emre
2,375 views
Suppose a random sample of 25 students is selected from a community college where the scores in the final exam (out of 125
3 answers
asked by
Coco
1,144 views
A survey found that women’s heights are normally distributed with mean 63.4 in and standard deviation 2.5 in. A branch of the
4 answers
asked by
Angie
5,761 views
A statistics teacher believes that the final exam grade for her elementary stats class have a normal distribution with a mean of
2 answers
asked by
Sean
947 views
Match each of the proportionality expressions below to the corresponding well-known distribution, and then compute the values of
2 answers
asked anonymously
76 views
A set of data has a normal distribution with a mean of 29 and a
standard deviation of 4. Find the percent of data within the
1 answer
asked anonymously
79 views
The mean of a normally distributed data set is 12, and the standard deviation is 2.
___% of the data points lies between 8 and
3 answers
asked by
Farah
2,132 views
Suppose the scores of students on an exam are Normally distributed with a mean of 297 and a standard deviation of 66. Then
4 answers
asked by
Please and Thank you!!!
4,048 views
Students in the psychology department consume an average of 5 cups of coffee per day with a standard deviation of 1.75 cups. The
5 answers
asked by
StudentD
4,266 views
Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of
2 answers
asked by
Brad
590 views
The mean of a normal distribution is 400 pounds. The standard deviation is 10 pounds. What is the area between 415 pounds and
4 answers
asked by
brenduh
1,382 views
A manufacturer of cereal finds that the masses of cereal in a company's 200-g package are normally distributed with a mean of
4 answers
asked by
kitkat
1,582 views
The number of cookies in a shipment of bags are normally distributed, with a mean of 64 and a standard deviation of 4. What
1 answer
asked by
skittlez
77 views
Why errors are assumed to be normaly distributed?
1 answer
asked by
Evaristi Paulo
50 views
Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of 0.2 inches and a standard
4 answers
asked by
C. Fenwick
4,355 views
Let X and Y be normal random variables with means 0 and 2, respectively, and variances 1 and 9, respectively. Find the
4 answers
asked by
abc
851 views
A brewery has a beer dispensing machine that dispenses beer into the company's 12 ounce bottles. The distribution for the amount
3 answers
asked by
Ashley
1,724 views
The length of time it takes college students to find a parking spot in the library parking lot follows a
normal distribution with
4 answers
asked by
Anonymous
5,785 views
The weight of a product is normally distributed with a standard deviation of .8 ounces. What should the average weight be if the
2 answers
asked by
jenny
1,340 views
a vending machine dispenses coffee into an 8 oz cup. the amount of coffee dispensed into the cup is normally distributed with a
5 answers
asked by
jennifer
1,752 views
Identify an example of a population that you would expect to be normally distributed. Explain why, according to you, it would be
2 answers
asked by
slomomo
839 views
Need help finding the area under the normal curve between z = -1.0 and z = -2.0?
3 answers
asked by
Betty
1,316 views
Use technology or a z-distribution table to find the indicated area.
The weights of grapefruits in a bin are normally distributed
3 answers
asked by
student
1,844 views
Suppose that the readings on the thermometers are normally distributed with a mean of 0∘ and a standard deviation of 1.00∘C.
5 answers
asked by
Anonymous
3,557 views
Suppose the yearly rainfall totals for a some city follow a normal distribution, with mean of 18 inches and standard deviation
3 answers
asked by
Anonymous
1,636 views
The masses of boxes of apples are normally distributed such that 20% of the boxes are heavier than 5.08 kg and 15% of the boxes
4 answers
asked by
Raj
1,039 views
Daily output of Marathon's Garyville, Lousiana, refinery is normally distributed with a mean of 232,000 barrels of crude oil per
4 answers
asked by
Janice
1,866 views
The mean systolic blood pressure of adult males is normally
distributed with a mean of 138 (millimeters of mercury) and a
4 answers
asked by
Aleah
702 views
Which of the following statements are TRUE about the Normal Distribution? Check all that apply.
a. 50% of the data values lie at
3 answers
asked by
pancakey-
736 views
Cartons of milk from a particular supermarket are advertised as containing 1 litre of milk,but in fact the volume of the milk in
4 answers
asked by
Raj
1,069 views
Cartons of milk from a particular supermarket are advertised as containing 1 litre of milk,but in fact the volume of the milk in
4 answers
asked by
Raj
876 views
Given the mean = $12
Standard deviation = $2.50 Suppose that a large state university graduate research assistants are paid by
4 answers
asked by
Ronald
1,001 views
The medical records of infants delivered at Kaiser Memorial Hospital show that the infants' lengths at birth (in inches) are
3 answers
asked by
Ashley
1,483 views
The time taken by a milk man to deliver milk to GOR estate is normally distributed with mean 12 minutes and standard deviation
1 answer
asked by
m nawaz
359 views
The yearly mileage accumulated by an automobile in a large car rental company’s fleet is normal with mean 18000 kilometres
3 answers
asked by
eimear
653 views
At a high school, GPA’s are normally distributed with a mean of 2.6 and a standard deviation of 0.5. What percentage of
4 answers
asked by
Maxwell
2,298 views
How do I solve normal distribution word problems? Ex
A manufacturer offers a warranty on it's coffee makers. The coffee makers
3 answers
asked by
Ayane
1,501 views
B. A soft-drink vending machine is supposed to pour 8 ounces of the drink into a paper cup. However, the actual amount poured
5 answers
asked by
DON
1,152 views
suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000 use 68-95-99.7 rule to find
3 answers
asked by
CHIN
4,291 views
Using the 68-95-99.7rule. Assume that a set of test scores is normally distributed with a mean of 80 and a standard deviation of
4 answers
asked by
Nisa
6,628 views
The combined math and verbal scores for students taking a national standardized examination for college admission, is normally
4 answers
asked by
Ashley
3,327 views
(a)on a normal distribution of exam scored, poindexter scored at the 10th percentile, so he claims that he outperformed 90% of
4 answers
asked by
jan
3,403 views
Suppose x has a normal distribution with sigma = 1.2. Find the minimal sample size required so that for a 95% confidence
3 answers
asked by
Anonymous
3,225 views
The average number of calories in a 1.5 ounce chocolate bar is 225. Suppose that the distribution of calories is approximately
4 answers
asked by
Kath
4,608 views
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 115 and a variance of 25.
3 answers
asked by
Mary Ann
1,243 views
A company that manufactures and bottles apple juice has a machine that automatically fills 16-ounce bottles. There is some
4 answers
asked by
a
1,961 views
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Parent Categories (44)
Basic Concepts
Confidence Interval
Confidence intervals
Continuous Distributions
Continuous Probability Distributions
Data Analysis
Data Analysis and Interpretation
Data Analysis and Statistics
Data distribution
Data Distributions
Descriptive Statistics
Distribution
Distribution Analysis
Distribution of Data
Distribution of Variables
Distributions
Educational Statistics
Frequency distribution
Frequency Distributions
Hypothesis Testing
Mathematics/Statistics
Measures of Central Tendency and Dispersion
Population and Sampling
Probability
Probability & Statistics
Probability and Distribution
Probability and Distributions
Probability and Statistics
Probability Calculations
Probability Distribution
Probability distributions
Probability Theory
Random Variables
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Sampling distribution
Statistical Analysis
Statistical Distributions
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