Problem regarding the equality of variances between the iqs

Assignment Help Basic Statistics
Reference no: EM13985502

The IQs of 17 students from one area of a city showed a mean of 106 with a standard deviation of 10, whereas the IQs of 14 students from another area showed a mean of 109 with a standard deviation of 7. Test for equality of variances between the IQs of the two groups at α = 0.02.

Reference no: EM13985502

Questions Cloud

Test the hypothesis that choice of major : Test the hypothesis that the choice of the major by undergraduate students in this university is independent of their gender. Use α = 0.01.
Opinion on collective bargaining by teachers : The following table gives the opinion on collective bargaining by a random sample of 200 employees of a school system, belonging to a teachers' union.
Determining the normal distribution : Assuming that the samples come from a normal distribution: Test that the mean SAT score for math in 1999 is greater than that in 1989 at α = 0.05. Assume the variances are equal.
What is the total liquid and vapor flow rates : Determine whether this processes is a stripping process or an absorption process and what is the total liquid and vapor flow rates at the entrance and exit of the tower?
Problem regarding the equality of variances between the iqs : The IQs of 17 students from one area of a city showed a mean of 106 with a standard deviation of 10, whereas the IQs of 14 students from another area showed a mean of 109 with a standard deviation of 7.
Difference between the two population means : At the conclusion of the instructional period, a reading test gave results y1 = 74, y2 = 71, s1 = 9, and s2 = 10. What is the attained signi?cance level if you wish to see if there is evidence of a real difference between the two population means?..
Problem regarding the sample standard deviation : 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 months. Test at α = 0.01 whether the manufacturer's claim is correct.
Determining the average price of a gallon of gas : According to the Bureau of Labor Statistics (1996), the average price of a gallon of gasoline in all U.S. cities in the United States in January 1996 was $1.129. A later random sample in 24 cities found the mean price to be $1.24 with a standard d..
Annual expenditure per consumer unit : Assuming that the average annual expenditure of all consumer units was $30,692 in 1994, test at the 5% signi?cance level whether the annual expenditure per consumer unit had really increased from 1994 to 1995.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Significant difference in how the drugs perform

Is there any statistically significant difference in how the drugs perform? If so, explain the effect. Use the post hoc tests as needed.

  Several statistical tests have a way to measure effect size

several statistical tests have a way to measure effect size. what is this and when might you want to use it in looking

  Anticipate particular size or model requests

He says he rarely ever gets complaints if the exact model is not available, as long as he has a vehicle available, so he does not try to anticipate particular size or model requests and lets randomness take care of that. Weekly demand is as follow..

  Problem regarding the recessive genotype

A rare nonlethal disease (ND) that develops during adolescence is believed to be associated with a certain recessive genotype (aa) at a certain locus.

  Using the models in a estimate the nicotine concentration

the following data show the number of fruit fly killed at varying concentrations of nicotine.the number of ies killed

  1i plan an experiment to test the latest conflicting diet

1.i plan an experiment to test the latest conflicting diet programs. the factor for diet will involve three different

  Is this sufficient evidence at a significance level of 5

questionpart aan automotive expert claims that the large number of self-serve petrol stations has resulted in poor

  How conclude using null and alternate hypotheses

Setup Null and Alternate hypotheses to test if average amount of soda in each can is less than 32 oz. Test the hypothesis using a = 0.05. What can you conclude from all this?

  A city planning commission is considering revamping the

a city planning commission is considering revamping the traffic system of the city. help them by calculating the mean

  What is the probability two individuals chosen at random

what is the probability two individuals chosen at random from a classroom of 30 students are both females if there are

  There are also potential problems associated with

there are several advantages of using a paired t-test. since the same subjects are being tested in each of the varying

  Three experiments investigating the relation between need

three experiments investigating the relation between need for cognitive closure and persuasion were performed. part of

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