For this study, we should use The null and alternative hypotheses would be: Ho: (please enter a decimal) H1: (Please enter a decimal) The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα
For this study, we should use The null and alternative hypotheses would be: Ho: (please enter a decimal) H1: (Please enter a decimal) The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is αα
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly smaller than 65% at a level of significance of αα = 0.01. According to your sample, 37 out of 59 potential voters prefer the Democratic candidate.
- For this study, we should use
- The null and alternative hypotheses would be:
Ho: (please enter a decimal)
H1: (Please enter a decimal)
- The test statistic = (please show your answer to 3 decimal places.)
- The p-value = (Please show your answer to 4 decimal places.)
- The p-value is αα
- Based on this, we should the null hypothesis.
- Thus, the final conclusion is that ...
- The data suggest the population proportion is not significantly smaller than 65% at αα = 0.01, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 65%.
- The data suggest the populaton proportion is significantly smaller than 65% at αα = 0.01, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is smaller than 65%
- The data suggest the population proportion is not significantly smaller than 65% at αα = 0.01, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is smaller than 65%.
- Interpret the p-value in the context of the study.
- If the population proportion of voters who prefer the Democratic candidate is 65% and if another 59 voters are surveyed then there would be a 35.63% chance fewer than 62% of the 59 voters surveyed prefer the Democratic candidate.
- If the sample proportion of voters who prefer the Democratic candidate is 62% and if another 59 voters are surveyed then there would be a 35.63% chance of concluding that fewer than 65% of all voters surveyed prefer the Democratic candidate.
- There is a 65% chance of a Type I error.
- There is a 35.63% chance that fewer than 65% of all voters prefer the Democratic candidate.
- Interpret the level of significance in the context of the study.
- There is a 1% chance that the earth is flat and we never actually sent a man to the moon.
- If the population proportion of voters who prefer the Democratic candidate is 65% and if another 59 voters are surveyed then there would be a 1% chance that we would end up falsely concluding that the proportion of voters who prefer the Democratic candidate is smaller than 65%
- If the proportion of voters who prefer the Democratic candidate is smaller than 65% and if another 59 voters are surveyed then there would be a 1% chance that we would end up falsely concluding that the proportion of voters who prefer the Democratic candidate is equal to 65%.
- There is a 1% chance that the proportion of voters who prefer the Democratic candidate is smaller than 65%.
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