Question

What is the standard deviation of the average of ? independent measurements (i.e., ?,?,?,⋯,? ,⋯,?) whose...

What is the standard deviation of the average of ? independent measurements (i.e., ?,?,?,⋯,? ,⋯,?) whose standard deviations are (?,? ,? ,⋯,? ,⋯,? )? What will be the standard deviation if ?=? =? =⋯=? =⋯=? =? ?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Sixteen Independent measurements were made of the resistance of a resistor. The average was 52.37 and...
Sixteen Independent measurements were made of the resistance of a resistor. The average was 52.37 and the standard deviation was 0.12. a) Estimate the resistance of this resistor, and find the uncertainty in the estimate. b) A single measurement is made of the resistance of another resistor. This measurement is 61.42. What is the uncertainty in this measurement.
The standard deviation of a portfolio: Is a weighted average of the standard deviations of the...
The standard deviation of a portfolio: Is a weighted average of the standard deviations of the individual securities held in the portfolio. Can never be less than the standard deviation of the most risky security in the portfolio. Must be equal to or greater than the lowest standard deviation of any single security held in the portfolio. Is an arithmetic average of the standard deviations of the individual securities which comprise the portfolio. Can be less than the standard deviation...
The standard deviation of a portfolio: Multiple Choice is a weighted average of the standard deviations...
The standard deviation of a portfolio: Multiple Choice is a weighted average of the standard deviations of the individual securities held in the portfolio. can never be less than the standard deviation of the most risky security in the portfolio. must be equal to or greater than the lowest standard deviation of any single security held in the portfolio. is an arithmetic average of the standard deviations of the individual securities which comprise the portfolio. can be less than the...
A sample of 12 measurements has a mean of 31 and a standard deviation of 4....
A sample of 12 measurements has a mean of 31 and a standard deviation of 4. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 31 each. A. Find the mean of the sample of 14 measurements. Mean = B. Find the standard deviation of the sample of 14 measurements. Standard Deviation =
15.A data set has an AVERAGE = 67 and a STANDARD DEVIATION = 13.    (A)...
15.A data set has an AVERAGE = 67 and a STANDARD DEVIATION = 13.    (A) The data value 44.9 is precisely HOW MANY standard deviations BELOW the average value ?    (B) A data value happens to be precisely 0.89 standard deviations BELOW its average. WHAT is the Z SCORE for that data value ?    (C) Please determine the data value which is 2.4 standard deviations ABOVE the mean value.
A distribution of measurements is relatively mound-shaped with mean 50 and standard deviation 5. (a) What...
A distribution of measurements is relatively mound-shaped with mean 50 and standard deviation 5. (a) What proportion of the measurements will fall between 45 and 55? (b) What proportion of the measurements will fall between 40 and 60? 0.68 (c) What proportion of the measurements will fall between 40 and 55? (d) If a measurement is chosen at random from this distribution, what is the probability that it will be greater than 55?
If the average of a normal distribution of losses is $5,000 and the standard deviation is...
If the average of a normal distribution of losses is $5,000 and the standard deviation is $200 – 68% of values lie within one standard deviation. What is the upper bound and lower bound for this range? Similarly, 95% of values lie within 2 standard deviations. What is the upper bound and lower bound for this range?
A sample of 12 measurements has a mean of 38 and a standard deviation of 3.75....
A sample of 12 measurements has a mean of 38 and a standard deviation of 3.75. Suppose that the sample is enlarged to 14 measurements, by including two additional measurements having a common value of 38 each. (round your answer to four decimal place) A.Find the mean of the sample of 14 measurements B. Find the standard deviation of the sample of 14 measurements.
Question3: Consider the following 12 independent measurements from a normal distribution: Independent measurements: 21, 16, 20,...
Question3: Consider the following 12 independent measurements from a normal distribution: Independent measurements: 21, 16, 20, 15, 12, 4, 8, 17, 29, 18, 19, 12 1) What is the standard error of the sample mean? 2) Calculate a 90% confidence interval for the population mean.
A distribution of measurements is relatively mound-shaped with a mean of 40 and a standard deviation...
A distribution of measurements is relatively mound-shaped with a mean of 40 and a standard deviation of 15. Use this information to find the proportion of measurements in the given interval. between 25 and 55
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT