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Standard Deviation
Page 3
Questions (252)
The time to complete a standardized exam is approximately normal with a mean of 70 minutes and a standard deviation of 10
3 answers
asked by
abby
2,490 views
Can someone please help me answer these questions? I have tried every method I know and the computer still keeps marking the
5 answers
asked by
Jen
2,311 views
If the standard deviation for waiting times in a line is 5 minutes, the standard deviation for the averages of 30 randomly
4 answers
asked by
Sarah
2,069 views
a quiz consists of 30 true or false questions. if the student guesses on each question, what is the standard deviation of the
4 answers
asked by
mike
1,675 views
A sample of 106 body temperatures resulted in a mean of 98.2 degrees and a standard deviation of .62 degrees. Use these sample
3 answers
asked by
Elizabeth
1,454 views
a mean score on a standardized test is 50 with a standard deviation of 10. What are the following:
1. what scores fall between -1
3 answers
asked by
erica
1,376 views
find the standard deviation for the given data. Round your answer to one more decimal place than original data.
4 answers
asked by
Marie
1,391 views
A company manufactures televisions in batches of 25 and there is a 1% rate of defects. Find the standard deviation for the
1 answer
asked by
Plz help
1,388 views
Question 1
Which of the below data sets has the lowest standard deviation? You do not need to calculate the exact standard
2 answers
asked by
Anonymous
1,338 views
A company manufactures calculators in batches of 64 and there is a 5% rate of defects. What is the standard deviation for the
2 answers
asked by
Rebecca
1,268 views
The participants in a weight-loss class lost the following weights (in pounds) after three weeks of dieting:3,6,0,3,0,0
Assuming
1 answer
asked by
roy
1,181 views
This is the first question..... For a population that has a standard deviation of 10, figure the standard deviation of the
1 answer
asked by
Heather
1,163 views
Consider the following test scores obtained by a class.
Test score 90 80 70 60 50 Frequency 1 4 11 6 2 Find the standard
2 answers
asked by
Debin
1,170 views
sigma is the standard deviation of a population of size N
S is the standard deviation of a sample of size n from within the
7 answers
asked by
mathstudent
1,128 views
Individuals who have a certain gene have a 0.50 probability of contracting a certain disease. Suppose that 1,940 individuals
3 answers
asked by
Sarah
1,091 views
In a recent season, the population standard deviation of the yards per carry for all running backs was 1.241.24. The yards
2 answers
asked by
tanya
1,048 views
Compare the standard deviation for the heights of males and the standard deviation for the heights of females in the class.
2 answers
asked by
letty
1,035 views
About 10% of the population has a particular genetic mutation. 500 people are randomly selected.
Find the standard deviation for
1 answer
asked anonymously
22 views
Assume that a procedure yields a binomial distribution with n=1358
trials and the probability of success for one trial is p=.84
1 answer
asked anonymously
96 views
1.what is the standard deviation of these values
first 7:57,61,57,57,58,57,61 and second 7:61,52,69,64,46,54,47 2. compare the
2 answers
asked by
favor
892 views
A cyclist won a bicycle race for seven consecutive years. His "winning" times and "victory" margins (time difference of the
2 answers
asked by
Kielyn
906 views
Which of the following is true about Standard Deviation?
a. It is the maximum value minus the minimum value b. It a range of
1 answer
asked by
Beata Chmielewska
774 views
87,89,90,90,98,99,99,101,102,103,104
Within how many standard deviations of the mean is the value 102?
2 answers
asked by
Anonymous
764 views
The standard deviation of the diameter of 18 baseballs was 0.29cm. Find the 95% confidence interval of the true standard
1 answer
asked by
ann
761 views
In an essay of 250-500 words, thoroughly address the following items and respond to the related questions:
1.Define the term
2 answers
asked by
Andrew
785 views
1)Find the standard deviation of the data set to the nearest tenth. (21,13,18,16,13,35,12,8,15)
A)16.8 B)7.8 C)7.3 D)5.7 I chose
2 answers
asked by
Jon
740 views
Can someone provide me with some assistance in answering this question..
A company manufacturers batteries in BATCHES of 18 and
2 answers
asked by
john
685 views
The population standard deviation (σ) for a standardized achievement test that is normally distributed is 8.
a.) Calculate
2 answers
asked by
PK
631 views
How do you figure this out?
For a population that has a standard deviation of 10, what is the standard deviation of the
2 answers
asked by
Amanda
606 views
. Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 15, 42,
2 answers
asked by
Lynn
544 views
Consider G. Thumb, the leading salesperson for the Moe D. Lawn Landscaping Company. Thumb turned in the following summary of
2 answers
asked by
Debin
535 views
Hi Bob,
Thanks for the direction. I got so far with it on my own and became stuck. I did as you said but still have one question.
2 answers
asked by
Beverley
523 views
Find the standard deviation using the rule of thumb for each of the data sets
57,61,57,57,58,57,61 61,52,69,64,46,54,47
4 answers
asked by
shelly
531 views
I have a problem on standard deviation, and I will need some help with it.
Problem: Each professor in an English class give an A
2 answers
asked by
bikie
527 views
Find the standard deviation for the given data. Round your answer to one
more decimal place than the original data. 2, 5, 47, 11,
2 answers
asked by
Rena
525 views
using the numbers only 0 through 10 only whole numbers with repeats allowed
pick four numbers that would have the smallest
3 answers
asked by
statistics
508 views
An unknown distribution has a mean of 90 and a standard deviation of 16. Samples of size n=64 are drawn randomly from the
1 answer
asked anonymously
47 views
This is a standard deviation contest. You have a six sided die with the numbers 1 to 6 written on the faces.
a)In order to have
2 answers
asked by
Sue
502 views
Consider the following test scores obtained by a class.
Test score 90 80 70 60 50 Frequency 1 4 11 6 2 Find the standard
2 answers
asked by
Debin
493 views
Suppose that the average annual salary for city employees is $36,000 with an SD of $12,000. The city council decides to give
2 answers
asked by
B
528 views
150 students sat exams. The following elements were calculated
ΣFX = 10200 Σ(x-μ)F = 196348 Determine the number of students
3 answers
asked by
Lenny
498 views
Suppose that 30% of all telephone calls at work are for personal reasons. If a random sample of 15 is taken, let X be the number
3 answers
asked by
Anonymous
485 views
If sigma(t)^2 denotes the standard deviation in the quantity t^2, show that
sigma(t)^2=2tsigma(t) I don't even know where to
2 answers
asked by
Anna
464 views
You have a box of 15 widgets whose average weight for each individual widget is 10 pounds with a standard deviation of 4.0
1 answer
asked by
chandler
502 views
find the standard deviation for the following: 8,5, 12, 8, 9, 15, 21, 16, 3. There is a formula but our teacher wants us to do
3 answers
asked by
sarah
465 views
If someone scored two Standard Deviations above the Mean on a standardized test where the Mean = 100 and the Standard Deviation
2 answers
asked by
Jenny
489 views
What would a person's numerical score be if someone scored two Standard Deviations above the Mean on a standardized test where
1 answer
asked by
Pat
479 views
Find the standard deviation for the given data. Round your answer to one or more decimal places than the original data.
3){15,13,
1 answer
asked by
anonymous
467 views
A company manufactures calulatoirs in batches of 64 and ther is a 5% rate of defects. Find the standard deviation for the number
1 answer
asked by
Tami
473 views
A student scores 600 on a SAT test. If the population mean of the test scores is 510 and the population standard deviation is
1 answer
asked by
violet
476 views
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Parent Categories (23)
Assessments and Grading
Binomial distribution
Confidence Interval
Confidence intervals
Data Analysis
Descriptive Statistics
Hypothesis Testing
Measures of Central Tendency
Measures of Central Tendency & Dispersion
Measures of Central Tendency and Dispersion
Measures of central tendency and variability
Measures of Central Tendency and Variation
Measures of Variability
Measures of Variation
Normal Distribution
Probability
Probability and Sampling
Probability and Statistics
Probability Distribution
Probability Theory
Random Variables
Sampling Methods
Statistics