Purchase Solution

Test of mean

Not what you're looking for?

Ask Custom Question

The mean wage of workers in a certain industry over the whole country is $210 per week, with a standard deviation of $7.50. A sample of 100 workers from one large factory is found to have a mean wage of $208 per week. Are the workers in this factory different from the rest of the industry?

Purchase this Solution
Solution Summary

The expert tests the mean for rest industries. The standard deviation is determined.

Solution Preview

Ho : The mean wage of workers is $210 per week
H1 : The mean wage of workers is not $210 per week

Level of significance = 5%

Test ...

Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.

Know Your Statistical Concepts

Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.

View More Free Quizzes
Related BrainMass Solutions

  • Point Estimate of Statistics and Probability Calculation

    What is the probability a random sample of 100 test takers will provide a sample mean test score within 10 of the population mean of 494 on the writing part of the test?

  • Hypothesis Testing for Mean-Local Tire Store

    Details t Test for Hypothesis of the Mean Data Null Hypothesis = 39000 Level of Significance 0.01 Sample Size 18 Sample Mean 38250 Sample Standard Deviation 1200 Intermediate Calculations Standard Error of the Mean 282.8427125

  • Hypothesis test: sample of 100

    Z Test of Hypothesis for the Mean Data Null Hypothesis m= 80 Level of Significance 0.01 Population Standard Deviation 12 Sample Size 100 Sample Mean 77 Intermediate Calculations Standard Error of the Mean 1.2000

  • Statistics: Rejecting a Null Hypothesis

    What can you say about the results of the hypothesis test: H0: mean = 5 vs. H1: mean not equal to 5 tested using the same sample at the same level of significance? Questions: a. reject H0 in the second test b.

  • The right test

    Z-test of a population proportion c. t test of a population mean d. x^2 test of a population variance Hello, In this case you are comparing the "average" daily revenue. "Average" is another word for "mean".

  • One-tailed test of hypothesis

    H0 mean =12.8 H1 mean <12.8 This is a z test The value of the test statistic is The critical value at the 0.01 level of significance: (round to at least three decimal places) Can we support the claim that the mean completion time has decreased under

  • Test statistic

    32316 Find the test statistic A sample of 25 households in Prolific City revealed a mean of 7.5 residing members and a standard deviation of 3. If the mean household size for the nation is 4.2, what is the value of the test statistic?

  • Hypothesis Testing of Mean: Baseball 2008 Data

    Details t Test for Hypothesis of the Mean Data Null Hypothesis = 2 Level of Significance 0.05 Sample Size 30 Sample Mean 2.62 Sample Standard Deviation 0.750841866 Intermediate Calculations Standard Error of the Mean

  • Hypothesis testing

    Sample Mean 75.9 Intermediate Calculations Standard Error of the Mean 0.533333333 Z Test Statistic 2.625 Upper-Tail Test Upper Critical Value 2.326347874 p-Value 0.004332448 Reject the null hypothesis Z Test of Hypothesis for the Mean

  • Statistical relationship between home-schooling and achievement

    H0: The mean score of home-schooled children is equal to the mean score of non home-schooled children on a standardized achievement test (µ1 = µ2) H1: The mean score of home-schooled children is different from the mean score of non home-schooled children

View More Related Solutions