finite math

posted by .

1. what are the mean and standard deviation for this distribution of weekly take-home pay amounts?

2. what percentage of the pay amounts lie within 1 standard deviations of the mean?

3. what percentage of the pay amounts lie within 2 standard deviations of the mean?

4. what percentage of the pay amounts lie within 3 standard deviations of the mean?

5. what is the range of the pay amounts?

  • finite math(?) -

    What distribution?


    Find the mean first = sum of scores/number of scores

    Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

    Standard deviation = square root of variance

    http://en.wikipedia.org/wiki/File:The_Normal_Distribution.svg

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    Given a distribution with mean X and standard deviation S, answer the following. 4.1 Determine the mean and standard deviation if constant K is added to each observation 4.2 Determine the mean and standard deviation if constant K is …
  2. Data Management, Math

    Chebyshev's Theorem states that withing 2 standard deviations (regardless of the mean) that 95% of data is contained. There is also a theorem that states the minimum % of data that will lie between 2 standard deviations. Chebyshev's …
  3. math

    Suppose x is a random variable with mean and standard deviation. If a large number of trials is observed, at least what percentage of these values is expected to lie beween mean-2(standard deviation) and mean + 2(standard deviation) …
  4. math

    weekly take home pay for those 20 graduate teaching assistants from university z: 500.75, 217.43, 488.25, 405.78 485.46, 495.48, 370.75, 435.40 479.65, 482.56, 470.28, 489.90 382.50, 500.75, 465.32, 481.25 506.43, 225.50, 504.38, 179.25 …
  5. math

    weekly take home pay for those 20 graduate teaching assistants from university z: 500.75, 217.43, 488.25, 405.78 485.46, 495.48, 370.75, 435.40 479.65, 482.56, 470.28, 489.90 382.50, 500.75, 465.32, 481.25 506.43, 225.50, 504.38, 179.25 …
  6. statistic

    Chebyshev's thereon- the author's generac produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volt. using chebyshev's theorem,what do we know about the percentage of voltage amounts that are within 3 …
  7. statistcs

    The authors generac generator produces voltage amounts with a mean of 125.6 volts and a standard deviation of 0.3 volt. using the Chebyshev's theorem, what do we know about the percentage of voltage amounts that are within 3 standard …
  8. Elementary Statistics

    Heights of women have a bell-shaped distribution with a mean of 161 cm and a standard deviation of 7 cm. Using Chebyshev’s theorem, what do we know about the percentage of women with heights that are within 2 standard deviations …
  9. statistics

    Heights of women have a bell-shaped distribution with a mean of 158 cm and a standard deviation of 8 cm. Using Chebyshev’s theorem, what do we know about the percentage of Women with heights that are within 3 standard deviations …
  10. Satistics

    Monthly incomes of employees at a particular company have a mean of $5954. The distribution of sample means for samples of size 70 is normal with a mean of $5954 and a standard deviation of $259. Suppose you take a sample of size 70 …

More Similar Questions