Find the mean and variance of y

Assignment Help Basic Statistics
Reference no: EM131744728

Question - Linear Function Suppose X is a discrete random variable with mean mX and variance s2X. Let Y be a linear function of X, such that Y = aX + b, where a and b are constants. Find the mean and variance of Y in terms of mX and s2X.

Reference no: EM131744728

Questions Cloud

Develop an agenda for an upcoming meeting : Develop an agenda for an upcoming meeting. Develop a meeting goal or goals, and identify the sequence of agenda item. Why you structured your agenda as you did.
Write an appropriate hypothesis : Is this a test of homogeneity or independence? Write an appropriate hypothesis. Are the conditions for inference satisfied
What has happened to the number of degrees of freedom : Grades again. In some situations where the expected cell counts are too small, as in the case of the grades given by Professors Alpha and Beta.
Describe four common delivery methods of communicating ideas : Describe the four common delivery methods of communicating ideas. Recommend tips for speakers addressing the media. Recommend visual and auditory aids.
Find the mean and variance of y : Let Y be a linear function of X, such that Y = aX + b, where a and b are constants. Find the mean and variance of Y in terms of mX and s2X
Determining the lurking variable : A lurking variable. The effect of a lurking variable can be surprising when individuals are divided into groups.
Do you see evidence of an association : Do you see evidence of an association between the amount of fish in a man s diet and his risk of developing prostate cancer?
Find the mean variance and standard deviation of y : Standardization Suppose X is a discrete random variable with mean µX and variance s2X. Find the mean, variance, and standard deviation of Y
Cautioned about in the previous exercise : Another example. Here is another example of the group effect cautioned about in the previous exercise.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Population standard deviation

If the manager of a paint supply store wants to estimate, with 95% confidence, the mean life of light bulbs to within +/-20 hours and also assumes that the population standard deviation is 100 hours, how many light bulbs need to be selected?

  Car crash blocking the road

Estimate the probability that the next time you ride in a car, you will not be delayed because of some car crash blocking the road.

  Determine the registered voters that will really vote

Pollsters attempt to find out whether or not person is a "likely voter" before they count their opinion in poll. If we suppose 40% of registered voters will really vote.

  Be sure to identify the null hypothesis alternative

use a x2 test of association to test the claim that in the given contingency table the row variable and the column

  Determining the manufacturer claim

A manufacturer claims that the mean life of batteries manufactured by his company is at least 44 months. A random sample of 40 of these batteries was tested, resulting in a sample mean life of 41 months with a sample standard deviation of 16 month..

  Partial anova table

What is the difference between linear impact and linear correlation?

  Discuss your first individual variable, using graphical

Discuss your second individual variable, using graphical, numerical, summary, and interpretation.

  Draw the model for given iq scores

Draw the model for these IQ scores. Clearly label it, showing what the 68 - 95 - 99.7 Rule predicts about the scores.- In what interval would you expect the central 95% of IQ scores to be found?

  After 2 years there was no difference in the risk of heart

a large study was conducted to test the effectiveness of a drug in combination with aspirin in warding off heart

  Find cumulative distribution function of the number of cars

Find the probability that the number of cars sold tomorrow will be between two and four (both inclusive).- Find the cumulative distribution function of the number of cars sold per day.

  Equal frequencies-chi-square goodness-of-fit test

Four different brands of a pain medication used for chronic back ailments were tested to see if the number of side effects for each brand were the same. The table below lists the results of the reported number of side effects for each brand of pa..

  Under control and follows a normal distribution

A process is under control and follows a normal distribution with mean 100 and standard deviation 10. In constructing a standard -chart for this process, the control limits are set 3 standard deviations from the mean-i.e., 100 . The probability of o..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd