120 Answered Questions for the topic Mean

Mean

08/23/18

The mean of two numbers is 10, and one number is 6 more than the other. What is the value of the smaller of the two numbers?
Could anyone please help me?
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08/08/18

Practice question
Suppose medical records indicate that the length of newborn babies (in inches) is normally distributed with a mean of 20 and a standard deviation of 2.6. Find the probability that a given infant is... more
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Mean

06/03/18

The mean of n numbers doubles as each number is doubled. Explain
find mean
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04/12/18

How many did Ellen win?
Ellen and Janet together won 32 tennis games. Janet won 6 more than Ellen.
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Mean

04/02/18

Is the mean always equal to a value in a data set
Is the mean always equal to the data set  
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Mean

02/05/18

30 students - the mean is 70%, 20 boys - the mean is 62%, 10 girls the mean is ?
Can you show me calculation / formula 
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11/10/17

seven numbers have a mean of 8. six of the numbers are 9,7,6,4,11 and 10. find the seventh number.
 finding the missing number in a sequence of numbers that have a mean of a certain number. 
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09/15/17

standard deviation 2
In a large class of 500 students, the mean and standard deviation of a final exam are 65 and 11, respectivelyIf the grades distribution is not symmetric at least how many students have grade within... more
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Mean Mea

09/07/17

A snowboarder descends a 1200-foot hill in 3 minutes. What is the mean change in elevation per minute?
Please help! I'm very confused. Thanks!
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Mean

06/14/17

Standard deviation
Find the mean for a set of data with a standard deviation of 1.3, given that a value if 95 has a z score of 0.5
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05/25/17

What would the mean be?
Person A has a z-score of -3 and is on her phone for 7 hours a day. Person B has a z-score of -4 and is on her phone for 3 hours a day. It is a normal distribution. What would be the mean of the... more
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Mean

05/22/17

create a data set that has five. The mean should be 12
Create a data set that has five values. The mean should be 12  
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Mean

05/03/17

the mean number of wins for the last 20 seasons is 10.4. In the 21st season, the team won 14 games. What will be the new mean? Show all of your work.
Explain why you did each step
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Mean Average

03/02/17

The sum of four numbers is 396.80. The first two numbers are 96.8 and 100.1. Find the average of the four numbers
word problem I need to solve for homework. I need to know how to get the answer
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02/04/17

STATS QUESTION
In a neighborhood near Simmons, there are 280 families. The average number of members per family is 3.5. How many people live in the neighborhood?a. 980 peopleb. 80 peoplec. 900 peopled. 105 people
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Mean

10/12/16

You score an 88 on the first of two exams. Write and solve an equation to find the score xx that you need on the second exam to have a mean score of 93.
Mean is the awseom ethin
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Mean

09/20/16

The mean age of six persons is 49 years. The ages of five of these six persons are 56 , 34 , 40 , 51 , and 36 years. Find the age of the sixth person.
 The mean age of six persons is 49 years. The ages of five of these six persons are 56, 34, 40, 51, and 36 years.Find the age of the sixth person.
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08/22/16

What is a real life situation in which using the median is preferable to the mean?
What is a real life situation in which using the median is preferable to the mean? Number examples please!
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Mean

08/18/16

x = (80,320,a,a,a) mean = 100
 find the value of a
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Mean

08/09/16

What is the mean?
4x+3,7,3x-2,9x
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05/31/16

Standard deviation question+answer
The question:   The ages, x years, of 150 cars are summarised by     ∑x = 645 and ∑x2 = 8287.5   Find ∑(x-y)2 where y denotes the mean of x.     The answer:   y= 4.3   standard... more
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05/20/16

Standard deviation
set of data with 1200 numbers is normally distributedwith a mean of 27 and a standard deviation of 4. how many numbers in the data would you expect to be between 23 and 31?
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05/07/16

Sets---Mean, Median
1. Use the data set {5, 21, 21, 25, 30, 40} to find the requested values: a. Mean b. Median c. Mode d. Range e. Standard deviation
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05/06/16

Central Limit Theorum
Assume the population mean is µ=12 and standard deviation 2. By Central Limit Theorem the random sample of 121 measurements from this population would have what kind of distribution?
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Mean Math Help

05/06/16

how do i find the value of a missing number when i already have a mean?
i need so much help just help m please!!!
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