Weekly salaries of teachers-normal distribution

Assignment Help Basic Statistics
Reference no: EM1392321

The weekly salaries of teachers in one state are normally distributed with mean of $490 and standard deviation of $45.

a. Determine the probability that a randomly selected teacher earns more than $525 per week?

b. Determine the probability a randomly selected teacher earns less than $435 per week?

Reference no: EM1392321

Questions Cloud

Explain war on drugs and war on terror : It has been said by some that "War on Drugs" is same as "War on Terror". Do you agree or disagree with that statement? Ensure to thoroughly explain the view.
Estimate concentration of the solution : Assume you are provided a solution of 0.1 M NaCl. What is the concentration of that solution in mg/ml? In %w/v?
Employment drug tests on job applicants by faa : In 1992, FAA conducted 86,991 pre-employment drug tests on job applicants who were to be engaged in safety and security-related jobs, and found that 1,143 were positive.
Estimate simple linear regression models : Estimate simple linear regression models for both the raw data and the logs, estimating both the intercept and the slope.
Weekly salaries of teachers-normal distribution : The weekly salaries of teachers in one state are normally distributed with mean of $490 and standard deviation of $45. Determine the probability that a randomly selected teacher earns more than $525 per week?
Example of a normal distribution : What is an example of a normal distribution? please articulate what the example is (post the graph, picture of the graph, etc); discuss what the normal distribution means for this example, and how the graph is being used to articulate the problem.
Find the concentration of buffer : The recipe for 10x TBE buffer is 890 mM Tris, 890 mM boric acid, 20 mM EDTA. What is the concentration of 1x TBE buffer?
Constructing a scatter plot and determining correlation : Constructing a scatter plot and determining correlation. a. display the data in a scatter plot, b. calculate the correlation coefficient f, and c. make a conclusion about the type of correlation.
Estimating normal distribution with standard deviation : According to the retail electronics chain, adults in 40 to 50 year old age group, the mean amount spent per year on electronics is $1998.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Chi-square test-independent attributes

At the 0.05 level of significance, is there evidence of a significant relationship between the age groups and where people primarily get their news? If so explain the relationship.

  Finding expected shape of distribution of sample mean

Find out the expected shape of distribution of sample mean?

  Standard deviation for the problem of presidential election

In the 1992 U.S. presidential election, Bill Clinton received 43% of the vote compared to 38% for George H. W. Bush and 19% for Ross Perot. Suppose we had taken a random sample of 100 voters in an exit poll and asked them for whom they had voted.

  Estimating the expectation

expectation of the statistic that was proposed by Statistician - Based on the information collected in Tasks 1-8, which of the two statistics produces values which tends to be more concentrated about the expectation of the measurement?

  What is the probability sample mean

The mean television viewing time for Americans is 15 hours per week (Money, November 2003). Assume a sample of 60 Americans is taken to further investigate viewing habits. Suppose the population standard deviation for weekly viewing time is Q = 4..

  Price-to-earnings ratio

The Price-to-Earnings ratio (P/E) of a publicly listed profit-making company is defined as the ratio of the stock price of the company to the earnings per share.

  Describe hyper-geometric distribution

What is the probability that two of absent students were girls.What is the probability that two of absent students were boys.

  Finding expected value based on probability values

How would the General Counsel's decision in Part (b) change if the cost of selling the second suit were only $200,000? What if the cost were $900000?

  What is the probability of the bearings failing

Four wheel bearings have been replaced on a company car. The mechanic has selected 4 bearings from a large supply bin. The mechanic is unaware that 10 percent of the bearings fail within the first 100 miles.

  Create a cumulative percentage distribution

Form the cumulative percentage distribution and plan a cumulative percentage polygon.

  Computing value of exponentially smoothed series

Using smoothing constant of w = .80, compute the value of exponentially smoothed series in 1983.

  Test the mean cholesterol content in egg

Test the mean cholesterol content in the egg is greater than 2.5 percent

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