92 Answered Questions for the topic Normal Distribution

Normal Distribution Math Statistics Probability

12/11/19

Have a final pleaseee help
In a normal distribution with mean 850 in standard deviation 120 find the probability that a data value picked at random is greater than 1169show work!
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Normal Distribution Math Statistics Standard Distribution

12/01/19

SAT scores: The College Board reports that in a recent year, the mean mathematics SAT score was 514, and the standard deviation was 118. A sample of 65 scores is chosen.
SAT scores: The College Board reports that in a recent year, the mean mathematics SAT score was 514, and the standard deviation was 118. A sample of 65 scores is chosen. a. What is the probability... more
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12/01/19

Baby weights: According to a recent National Health Statistics Reports, the weight of male babies less than 2 months old in the United States...
Baby weights: According to a recent National Health Statistics Reports, the weight of male babies less than 2 months old in the United States is normally distributed with mean 11.5 pounds and... more
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Normal Distribution Statistics

10/17/19

Inverse normal distribution
The SAT test is a test taken by any students to enter college. THe mean of the math section is 500 with a standard deviation of 100. The scores are normally distributed. What score is the cutoff... more
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Normal Distribution Algebra 2 Z Scores

09/08/19

Normal Distribution and Z scores
The SAT Mathematics are know to follow an approximate normal distribution with a mean of 500 and a standard devation of 100. The ACT Mathematics are known to follow an approximate normal... more
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08/02/19

percentage of population and probability of coin toss

hello there,I would to help me how to solve these two problems. 1- Assume the world human population heights follow a perfect normal distribution with standard deviation of 20 and mean of 150, what... more
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06/15/19

Normal Distribution Question
Assume that x has a normal distribution with the specified mean and standard deviation. Find the indicated probability. (Round your answer to four decimal places.)μ = 4; σ = 2P(3 ≤ x ≤ 7) 
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Normal Distribution Probability

06/07/19

How do I find the probability that X is greater than 16.1
assume that X has a normal distribution, and find the indicated probabilityThe mean is 15.2And standard deviation is 0.9Find the probability that X is greater than 16.1
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Normal Distribution Probability

05/17/19

The life of a Radio Shack record player is normally distributed with a mean of 3.2 years and a standard deviation of 0.8 years. Radio Shack guarantees its record players for 2 years.
(a) Find the probability that a record player will last less than 2 years?(a) Find the probability that a record player will last more than 4 years?
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Normal Distribution Math Statistics Probability

05/16/19

normal distribution

Battery manufacturers compete on the basis of the amount of time their products last cameras and toys. A manufacturer of alkaline has observed that its batteries last for an average of 26 hours... more
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Normal Distribution Statistics

04/25/19

Normal Distribution

Assume that human body temperatures are normally distributed with a mean of 98.23°F and a standard deviation of 0.62°F.a. A hospital uses 100.6°F as the lowest temperature considered to be a... more
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Normal Distribution

03/06/19

A quick survey of peanut butter prices had standard deviation and mean of $0.26 and $3.68, respectively. Compute the area for a peanut butter jar costing more than $4.25.
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Normal Distribution Standard Deviation

02/24/19

How can I find two standard deviations above the mean, and one standard deviation bellow the mean
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Normal Distribution

08/07/18

mean: 21.1 and the standard deviation 5.0. Are any of these values unusual? Why or why not?
The ACT is an exam used by colleges and universities to evaluate undergraduate applicants. The test scores are normally distributed. In a recent year, the mean test score was 21.1 and the standard... more
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07/17/18

Binomial as Normal
Chelsea play 38 league games in a season. Their probability of losing each game is 0.25. If they lose fewer than 8 games, they will win the league. What is the probability they win the... more
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04/02/18

There is a 88.4% chance that my value of x is 30 or greater. If I assume my data is normally distributed..
There is a 88.4% chance that my value of x is 30 or greater. If I assume my data is normally distributed, can I determine the likelihood that my value of x is 26, 27, 28, 29, 31, 32, 33, 34... more
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03/15/18

The mean Algebra 2 test score is 81.5, with a standard deviation of 5.1. Assuming a normally distributed curve..
What percent of students scored between 81.5 and 91.7?   Please explain.
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Normal Distribution Statistics Statistics Question

02/18/18

read the description . I need work and an explanation
Tom and Jan are planning on applying to attend KSU. Tom takes the ACT while Jan decides to take the SAT. The mean score on the ACT is a 17 with a standard deviation of 5, and the SAT mean score is... more
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Normal Distribution

11/19/17

Find the area under the standard normal probability distribution between the following pairs of​ z-scores.
Z= -0.12 Z=0
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Normal Distribution

11/19/17

Find the area under the standard normal probability distribution between the following pairs of​ z-scores.
Z= -1.48 Z=0
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Normal Distribution

11/19/17

Find the area under the standard normal probability distribution between the following pairs of​ z-scores.
Z= -2.00 and Z=0
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Normal Distribution

11/19/17

Find the area under the standard normal probability distribution between the following pairs of​ z-scores.
Z= -1.00 and Z=0 
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Normal Distribution

10/31/17

this is a statistics problem
P(x < 170) mean= 174 and the standard deviation = 20. I have to fine the indicated probability.  
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Normal Distribution

10/16/17

normal distribution
Assume that adults have IQ scores that are normally distributed with a mean of 105and a standard deviation equals 20. Find the probability that a randomly selected adult has an IQ less than 141.
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Normal Distribution One Way Anova Log Transforming

08/24/17

Is it possible to do one way ANOVA between groups of data with different scales
I have 7 groups of data and the size of every group is 46. I want to do the parametric analysis of ANOVA between these groups. When every group of data has been checked for normality, the results... more
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