Statistics: Hypothesis testing, Correlation
Not what you're looking for?
See attached file.
Hypothesis Testing
Examine the given statement, then express the null hypothesis H0 and alternative hypothesis H1 in symbolic form. Be sure to use the correct symbol (μ , p ,σ) for the indicated parameter.
1. The majority of college students own a vehicle.
2. The standard deviation of daily rainfall amounts in San Francisco is 0.66 cm.
Use the given information to find the P-value. Also, use a 0.05 significance level and state the conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null hypothesis).
3. The test statistic in a right-tailed test is z = 2.50
4. The test statistic in a two-tailed test is z = - 0.55
Correlation
CPI 30.2 48.3 112.3 162.2 191.9 197.8
Cost of Pizza 0.15 0.35 1 1.35 1.5 2
1. Find the value of the correlation coefficient, r.
2. Find the critical value of r from Table A-6 using =0.05 .
3. Determine whether there is sufficient evidence to support a claim of linear correlation between the two variables.
Purchase this Solution
Solution Summary
Hypothesis testing correlations in statistics is examined.
Solution Preview
Please see the attachments.
Hypothesis Testing
Examine the given statement, then express the null hypothesis H0 and alternative hypothesis H1 in symbolic form. Be sure to use the correct symbol (μ , p ,σ) for the indicated parameter.
Answers
1. The majority of college students own a vehicle.
H0: p ≤ 0.5
H1: p > 0.5
2. The standard deviation of daily rainfall amounts in San Francisco is 0.66 cm.
H0: σ = 0.66
H1: σ ≠ 0.66
Use the given ...
Purchase this Solution
Free BrainMass Quizzes
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
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.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.