Find probability that mean salary is greater

Assignment Help Basic Statistics
Reference no: EM13120044

Assume that the salaries of elementry school teachers in the US are normally distributed with a mean of $32,000 and a standad deviation of $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500

a) 0.0475
b) 0.0950
c) 0.3312
d) 0.1312
e) 0.9525

Reference no: EM13120044

Questions Cloud

What proportion of the drivers are staff : A survey of autos parked in student and staff lots at a large university classified the brands by country of origin, as seen in the table: Given that the car is Europena, what proportion of the drivers are staff?
Find identically distributed continuous random variables : Suppose sunshine figures are independent identically distributed continuous random variables. Independent identically distributed continuous random variables
Algebra - evaluating expressions : Convert the given fraction into its other two forms? Evaluate expression. Use a calculator to check.
What is its volume when the temperature is increased : a sample of gas occupies 328 mL at 20 degrees C. What is its volume when the temperature is increased to 45 degrees C.
Find probability that mean salary is greater : Mean of $32,000 and a standad deviation of $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
Conducting analytical procedures : Research professional standards (AU 329) determine the requirement related to developing an expectation and conducting analytical procedures when those procedures are intended to provide substantive evidence.
Calculate delta e for the combustion of a gas : Calculate delta E for the combustion of a gas that releases 195.0 kJ of energy to its surroundings and does 54.5 kJ of work on its surroundings.
Find what is the probability that no husband is lined : Consider 4 couples (4 husbands and their wives) stand in random order in a line. What is the probability that no husband is lined up directly
Find out the tension in the two strings : Find out the tension in the two strings. string between m1 and m2 2 N string between m2 and the 3.00 kg mass

Reviews

Write a Review

Basic Statistics Questions & Answers

  Determining probability of mean volume for sample

Based on this information, if department employee selects random sample of n = 9 containers, determine probability that mean volume for sample will be greater than 1.01 gallons?

  Probability of observing event

The fill amount of bottle of soft drink has been found normally distribute with a mean of 2.0 liters and a standard deviation of 0.05 liters. If a random sample of bottles is selected, what is the probability that the sample mean will be between 1..

  Determine the daily supply in a more cost effective way

Whether regression can be used to estimate the Demand from other data in the file. So that Howies can determine the daily supply in a more cost effective way.

  Association between two variables

To test whether there is any association between two variables using Chi-Square test for independence.

  Normal distribution with standard deviation

Electrical connectors manufactured by a supply company last an average of 18.2 months and follow a normal distribution with a standard deviation of 1.7 months.

  Compare and interpret z-scores-probability

Colleges typically use grade point average cutoffs to decide who graduates with honors and who is accepted into certain programs (such as teacher education, for example).

  What is the null hypothesis for study

A college class believes that the average grade average of psychology students and the average grade averages of biology students are different.

  Testing statistical significance for sam sleep researcher

Sam Sleep researcher hypothesizes that people who are allowed to sleep for only four hours will score significantly lower than people who are allowed to sleep for eight hours on a management ability test.

  Opportunities to cross safely by the time

Imagine there are exactly m opportunities to cross safely by the time the nth shock occurs. What is the probability that the mth opportunity is a close call (that it occurs immediately before the nth shock).

  Information about binomial-poisson probabilities

Two percent of the parts from a production process are defective. A sample of five parts from the production process is selected. What is the probability that the sample contains exactly two defective parts?

  Sampling distribution of sample means

What is the sampling distribution of sample means? What is the mean of the sampling distribution of sample means?

  Independent alternators to provide electrical power

A certain airplane has two independent alternators to provide electrical power. The probability that a given alternator will fail on a 1-hour flight is .02. What is the probability that (a) both will fail? (b) Neither will fail? (c) One or the oth..

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