You wish to test Ho: μ = 87.5 versus Ha: 87.5 at a significance level of 0.10. You obtain a sample of size 21 with a mean of 84.5 and a standard deviation of 10.4. You believe that the population is normally distributed. Round your answers to three decimal places, and round any interim calculations to four decimal places. What is the test statistic? You wish to test Ho:μ = 63.9 versus Ha: μ< 63.9 at a significance level of 0.10. You obtain a sample of size 28 with a mean of 55.1 and a standard deviation of 16.7. You believe that the population is normally distributed. Round your answers to three decimal places, and round any interim calculations to four decimal places. What is the test statistic?

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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**Educational Exercise: Hypothesis Testing**

In this exercise, we will explore the process of hypothesis testing and calculate the test statistic for two different scenarios. 

**Scenario 1:**

You wish to test \( H_0: \mu = 87.5 \) versus \( H_a: \mu \neq 87.5 \) at a significance level of 0.10. You obtain a sample of size 21 with a mean of 84.5 and a standard deviation of 10.4. You believe that the population is normally distributed. Round your answers to three decimal places, and round any interim calculations to four decimal places.

- **Question:** What is the test statistic?

  [Textbox for answer entry]

**Scenario 2:**

You wish to test \( H_0: \mu = 63.9 \) versus \( H_a: \mu < 63.9 \) at a significance level of 0.10. You obtain a sample of size 28 with a mean of 55.1 and a standard deviation of 16.7. You believe that the population is normally distributed. Round your answers to three decimal places, and round any interim calculations to four decimal places.

- **Question:** What is the test statistic?

  [Textbox for answer entry]

**Instructions:**

For each scenario:

1. Calculate the test statistic using the formula for the one-sample t-test.
2. Input the results into the provided text boxes, rounded as instructed. 

The test statistic will help determine whether to reject the null hypothesis in favor of the alternative hypothesis based on the given significance level.
Transcribed Image Text:**Educational Exercise: Hypothesis Testing** In this exercise, we will explore the process of hypothesis testing and calculate the test statistic for two different scenarios. **Scenario 1:** You wish to test \( H_0: \mu = 87.5 \) versus \( H_a: \mu \neq 87.5 \) at a significance level of 0.10. You obtain a sample of size 21 with a mean of 84.5 and a standard deviation of 10.4. You believe that the population is normally distributed. Round your answers to three decimal places, and round any interim calculations to four decimal places. - **Question:** What is the test statistic? [Textbox for answer entry] **Scenario 2:** You wish to test \( H_0: \mu = 63.9 \) versus \( H_a: \mu < 63.9 \) at a significance level of 0.10. You obtain a sample of size 28 with a mean of 55.1 and a standard deviation of 16.7. You believe that the population is normally distributed. Round your answers to three decimal places, and round any interim calculations to four decimal places. - **Question:** What is the test statistic? [Textbox for answer entry] **Instructions:** For each scenario: 1. Calculate the test statistic using the formula for the one-sample t-test. 2. Input the results into the provided text boxes, rounded as instructed. The test statistic will help determine whether to reject the null hypothesis in favor of the alternative hypothesis based on the given significance level.
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