Purchase Solution

# Hypothesis Testing: Testing for proportions

Not what you're looking for?

Joe thinks that no more than 20% of students in his Statistics class will get an A in the final examination. To prove his claim, he takes a random sample of 35 students and finds to his surprise that 30% of students got an A. At a 0.01 percent level of significance can we reject Joe's claim?

##### Solution Summary

The solution tests the hypothesis that no more than 20% of students in Statistics class will get an A in the final examination

##### Solution Preview

I am assuming the level of significance is 0.01 and not 0.01%. Because if it is 0.01% then it would mean that the acceptance region is 99.99 %. Which would mean that rejection region is very small

Null Hypothesis:Ho: p=0.2
Proportion of students getting an A is 20%
Alternative Hypothesis:H1: > 0.2
Proportion of students getting an A is greater than 20%

p= 20.00% =Hypothesized proportion of students getting an A
q=1-p= 80.00% ...

##### Free BrainMass Quizzes

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

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.

##### Measures of Central Tendency

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