Standard deviation of r

Assignment Help Basic Statistics
Reference no: EM1322539

Long-term history has shown that 65% of all elected offices in a rural county have been won by Republican candidates. This year there are 5 offices up for public election in the county Let r be the number of public offices won by Republicans.

a) Find P(r) for r = 0, 1, 2, 3, 4, and 5.

b) Make a histogram for the r probability distribution.

c) What is the expected number of Republicans who will win office in the coming election?

d) What is the standard deviation of r?

Reference no: EM1322539

Questions Cloud

Probability values for the given discrete distribution : Computing the probability values for the given discrete distribution - What is the probability that you did not shake hands with a person with the flu
Stricter regulations of banking industry : Some people have argued for stricter regulations of the banking industry in the wake of the subprime mortgage meltdown.
Evaluate the mean and the median : Evaluate the mean, the median, and the mode of the salaries. Which best describes a typical salary and Evaluate the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
The kinetic energy of the lead car : A high-speed drill reaches 2000 rpm in 0.50 s. What is the drill's angular acceleration? Through how many revolutions does it turn during this first 0.50s.
Standard deviation of r : Determine the expected number of Republicans who will win office in the coming election? Illustrate the standard deviation of r?
How far is the ship from rocks : A broken piano emits frequencies from a low of 32.0 Hz to a high of about 4100 Hz. What is the shortest wavelength if the speed of sound in air is 342.50 m/s? Record the answer to three decimal places and include units in the answer.
Evaluate the probability values using normal distribution : Computing the probability values using normal distribution - The data set has a bell-shaped distribution. Between what two prices do 68% of the houses lie?
Microwave signals are beamed between two mountaintops : Though sunlight varies with season and time of day, solar energy falls on United States at an average intensity of 200. Assuming you live in an average location, what total solar-cell area would you need to provide all of your energy needs with en..
Combined production level : The combined production level should not exceed 1200 units per month. The demand for product II is no more than half the demand for product I.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Relationship of prevalence to predictive value positive

If sensitivity and specificity remain constant, determine the relationship of prevalence to predictive value positive and predictive value negative?

  Distribution of scores

In a distribution of scores, the arithmetic mean is 51, the median is 55, and the mode is 62. What is the score, in percentile form, of a subject who does less well than two-thirds of the sample?

  Determining source of difference by comparison procedure

Carry out suitable multiple comparison procedure to determine the source of the difference.

  What is the possibility that the average length

The population of lengths of aluminium coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.20 inches. A sample of four metal sheets is randomly selected from a batch. What is the possibility that t..

  Proportion of variability described by regression equation

What proportion of the variability in steel shipments for motor vehicles is described by regression equation?

  Explaining conclusion of evidence of difference in mean life

At 5% level of significance, is there evidence of difference in mean life of bulbs made by the 2 kinds of machines. What is your conclusion?

  Interpret test statistic

Estimate and interpret the p-value of the calculated test statistic above.

  To test the claim using two proportion z test

Obtain a test statistic and  p -value. Interpret the results at  α  = .01.

  The relationship among variables is sufficient to warrant

Describe the data appear the strength of the relationship among variables is sufficient to warrant using linear regression forecasting.

  Analysis of variance-one way

Describe the independent variable and the dependent variables?

  Creating scatter plot for the data

Create a scatter plot for the data. Determine the correlation coefficient for the data.

  Calculating standard error of the mean

The standard deviation of the population of adult female height scores is 3 inches. A random sample of 50 women yields a mean height of 64 inches. Calculate the standard error of the mean.

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