# Hypothesis

Not what you're looking for?

Use these data and hypothesis-testing techniques along with a 5% level of significance to determine whether the mean hourly wage of a manufacturing worker has changed.

PROBLEM:

According to the U.S. Bureau of Labor Statistics (http://www.bls.gov), the average hourly wage in the manufacturing sector in 2000 was $19.86 in the United States. Suppose a labor researcher wants to test to determine whether this figure is still accurate today. The researcher randomly selects 54 workers from manufacturing sector from across the United States and obtains a representative earning statements from each. The resulting sample average is $20.96, with a standard deviation of $3.

Use these data and hypothesis-testing techniques along with a 5% level of significance to determine whether the mean hourly wage of a manufacturing worker has changed.

##### Purchase this Solution

##### Solution Summary

The solution address using these data and hypothesis-testing techniques along with a 5% level of significance to determine whether the mean hourly wage of a manufacturing worker has changed.

##### Solution Preview

We can construct a confidence interval for the sample mean at 0.05 level of confidence. If the population mean $19.86 falls within this confidence interval, we can say that the mean hourly wage of a manufacturing worker hasn't ...

##### Purchase this Solution

##### Free BrainMass Quizzes

##### 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.

##### 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.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.