Statistics: Finding proportions using mean and standard deviation
Nov 3, 2014 · I'm stuck on second part of question so i have mean of $\\mu =22.8$ and standard deviation $\\sigma = 1.1$ and it is normal distribution a) what proportion is between $22$ and …
probability - Using Normal Distributions to find Proportion ...
What proportion of men are less than 165 cm. That is just asking what is the probability that a normal distribution with mean 178 and standard deviation 8 is less than or equal to 165.
Solving proportion problems involving three quantities
Aug 9, 2015 · Solving proportion problems involving three quantities Ask Question Asked 10 years, 2 months ago Modified 5 years, 11 months ago
Probability: How to find what proportion is between the 2 values
Oct 30, 2014 · What proportion of a normally distributed population is less than that many standard deviations above the mean? That's something you usually find using a table or …
Average proportion for proportions with different denominators
The second would be to find the actual average of the proportions. I cannot straightforwardly compute the average proportion by adding the subject proportions and dividing by the number …
How to find the percent variation in Y is explained by X?
Nov 15, 2015 · I know that the r^2 value for the data is 0.9832. Is there a way to use that value to find the percent variation in Y is explained by X? Or do I need to use the data given to me?
I need to find the proportion using mean and s.d.
Mar 11, 2017 · A movie fan calculated that the mean running time of horror films made in the 1980’s was 90 minutes with a standard deviation of eight minutes. Given that 7,250 horror …
How to calculate the long run proportion of time spent at a certain ...
Oct 16, 2023 · Now I am trying to find the long run proportion of times the matrix is the identity matrix. Here, we have a total number of 2^ (n^2) states. I tried the following: The long run …
statistics - How do I find if the probability of the sample …
2 I have this problem and I have no clue how to solve it. In 2012, 31% of the adult population in the US had earned a bachelor’s degree or higher. One hundred people are randomly sampled …
statistics - Finding proportions using the Empirical Rule ...
Jul 9, 2018 · Find the approximate proportion of observations in the data set that lie above $3.1$. Since the curve is bell-shaped, I would think the Empirical Rule can be used.