# perform one tailed or two tailed hypothesis test

Not what you're looking for?

a. In a similar study using a sample of n = 9 participants, the individuals who wore the shirt produced an average estimate of M= 6.4 with SS = 162. The average number who said they noticed was 3.1. Is the estimate from the participants significantly different from the actual number? Test the null hypothesis that the true mean is ? = 3.1 using a two-tailed test with = .05.

b. Is the estimate from the participants significantly higher than the actual number (? = 3.1)? Use a one-tailed test with ? = .05.

##### Purchase this Solution

##### Solution Summary

The solution provides detailed explanation how to perform one tailed or two tailed hypothesis test.

##### Solution Preview

a. The null hypothesis is the estimate from the participants the same as the actual number. mu=3.1

The alternative hypothesis is it is significantly different from the actual number mu> or < 3.1.

At 0.05 significance level, degree of freedom is 9-1=8, the critical t value is 2.31. The ...

##### 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.

##### 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.