You wish to test the following claim (Ha) at a significance level of a = 0.005. Ho : μ = 89.6 Ha : μ < 89.6 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 64 with a mean of M = 86.2 and a standard deviation of SD = 6.7. What is the critical value for this test? (Report answer accurate to three decimal places.) critical value= What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = The test statistic is... O in the critical region not in the critical region
You wish to test the following claim (Ha) at a significance level of a = 0.005. Ho : μ = 89.6 Ha : μ < 89.6 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 64 with a mean of M = 86.2 and a standard deviation of SD = 6.7. What is the critical value for this test? (Report answer accurate to three decimal places.) critical value= What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = The test statistic is... O in the critical region not in the critical region
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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![### Hypothesis Testing for Population Mean
You wish to test the following claim (Hypothesis \( H_a \)) at a significance level of \(\alpha = 0.005\):
\[ H_0 : \mu = 89.6 \]
\[ H_a : \mu < 89.6 \]
You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size \( n = 64 \) with a mean of \( M = 86.2 \) and a standard deviation of \( SD = 6.7 \).
### Steps for Hypothesis Testing
1. **Determine the critical value for the test:**
What is the critical value for this test? (Report answer accurate to three decimal places.)
\[ \text{critical value} = \_\_\_\_\_\_\_ \]
2. **Calculate the test statistic:**
What is the test statistic for this sample? (Report answer accurate to three decimal places.)
\[ \text{test statistic} = \_\_\_\_\_\_\_ \]
3. **Decision Rule:**
Determine if the test statistic is in the critical region.
- \(\circ\) in the critical region
- \(\circ\) not in the critical region
### Explanation
- **Null Hypothesis (H0):** The population mean (\(\mu\)) is 89.6.
- **Alternative Hypothesis (Ha):** The population mean (\(\mu\)) is less than 89.6.
- **Sample Information:**
- *Sample size (n):* 64
- *Sample mean (M):* 86.2
- *Sample standard deviation (SD):* 6.7
- **Significance Level (\(\alpha\)):** 0.005
To complete this test, you will need to determine the appropriate critical value for a one-tailed test with the given significance level, calculate the test statistic using the sample data, and then compare the test statistic to the critical value to make a decision on the null hypothesis.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3268b88a-f4fb-4fae-897e-35b47f1612ff%2F434ae79e-31a3-42cd-bd18-a0af3d19edf1%2F0et01ms_processed.png&w=3840&q=75)
Transcribed Image Text:### Hypothesis Testing for Population Mean
You wish to test the following claim (Hypothesis \( H_a \)) at a significance level of \(\alpha = 0.005\):
\[ H_0 : \mu = 89.6 \]
\[ H_a : \mu < 89.6 \]
You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size \( n = 64 \) with a mean of \( M = 86.2 \) and a standard deviation of \( SD = 6.7 \).
### Steps for Hypothesis Testing
1. **Determine the critical value for the test:**
What is the critical value for this test? (Report answer accurate to three decimal places.)
\[ \text{critical value} = \_\_\_\_\_\_\_ \]
2. **Calculate the test statistic:**
What is the test statistic for this sample? (Report answer accurate to three decimal places.)
\[ \text{test statistic} = \_\_\_\_\_\_\_ \]
3. **Decision Rule:**
Determine if the test statistic is in the critical region.
- \(\circ\) in the critical region
- \(\circ\) not in the critical region
### Explanation
- **Null Hypothesis (H0):** The population mean (\(\mu\)) is 89.6.
- **Alternative Hypothesis (Ha):** The population mean (\(\mu\)) is less than 89.6.
- **Sample Information:**
- *Sample size (n):* 64
- *Sample mean (M):* 86.2
- *Sample standard deviation (SD):* 6.7
- **Significance Level (\(\alpha\)):** 0.005
To complete this test, you will need to determine the appropriate critical value for a one-tailed test with the given significance level, calculate the test statistic using the sample data, and then compare the test statistic to the critical value to make a decision on the null hypothesis.
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