Purchase Solution

Null and Alternate Hypothesis : key information

Not what you're looking for?

Ask Custom Question

6. The manufacturer of a particular all-season tire claims that the tires last for 22,000 miles. After purchasing the tires you discover that yours did not last the full 22,000 miles. Suppose that a sample of 100 tires made by that manufactures lasted on average 21,819 miles with a sample standard deviation of 1,295 miles. Is there sufficient evidence to refute the manufacturer's claim that the tires last 22,000 miles? Let α = 0.05. Assume that the population standard deviation is σ= 1300.

State the null hypothesis.

State the alternate hypothesis.

What is the appropriate rejection region?

Compute the test statistic.

What is the final conclusion? Explain.
(Question also in attachment below)

Attachments
Purchase this Solution
Purchase this Solution
Free BrainMass Quizzes
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.

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

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.

View More Free Quizzes
Related BrainMass Solutions

  • Null & Alternative Hypotheses

    State the null and alternate hypothesis. Assuming that the null hypothesis is rejected, state the conclusion in terms of the problem. 2.

  • Statistics: test of means, test of proportions

    Assume Alpha = .05 and remember to clearly state the null and alternate hypothesis as well as your conclusion about the average salary of male doctors vs. female doctors. Hello, Please find the word doc attached with here. This contains key.

  • ANOVA and Hypothesis Testing

    State the null hypothesis and the alternate hypotheses. 2. What is the decision rule? 3. Compute SST, SSE, and SS total. 4. Complete an ANOVA table. 5. State your decision regarding the null hypothesis. Please see the attached file.

  • 10 Key Strategic Points for a prospectus, proposal and dissertation

    The required statistical test to test the difference in hours worked by existence of self-reported pain is given as follows: Step-I: Null and Alternate Hypothesis: Null Hypothesis: The mean number of hours worked by employees not having self-reported

  • Testing a Null Hypothesis on a Random Sample of 100

    =20, calculate the value of the test statistic z. 8.18 Use a rejection point to test null hypothesis versus alternate hypothesis by setting probability of Type I error equal to .05 8.20 Use a rejection point to test null hypothesis versus alternate

  • Hypothesis Testing - Real Life Example

    117671 Hypothesis Testing - Real Life Example Make a decision regarding the null hypothesis based on the sample information and interpret the results of the test, state whether we proved or disproved the null hypothesis and why the data proves this.

  • Job Satisfaction Survey

    TEST #2 Extrinsic variable by Position Type Write out a Null & Alternate Hypothesis (alpha = .05). State the null and an alternate statement for the test.

  • Hypothesis Test: Chi-Square Test of Variance

    The solution also provides information on when to use a parametric test and when to use a non-parametric test.

  • NULL AND ALTERNATIVE HYPOTHESES

    Below is what we have so far, from this information how would I write the null and alternate hypothesis? Introduction No more prevalent in the world is the ability to turn a business idea into reality than in the United States.

View More Related Solutions