You wish to test the following claim (Ha) at a significance level of a = 0.002. H.:µ = 84.8 На: и> 84.8 You believe the population is normally distributed and you 15.7. You obtain a know the standard deviation is o = sample mean of M 88.9 for a sample of size n = 42. What is the critical value for this test? (Report answer accurate to three decimal places.) critical value =|3.050 X %3D What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic =| 1.692 v o
You wish to test the following claim (Ha) at a significance level of a = 0.002. H.:µ = 84.8 На: и> 84.8 You believe the population is normally distributed and you 15.7. You obtain a know the standard deviation is o = sample mean of M 88.9 for a sample of size n = 42. What is the critical value for this test? (Report answer accurate to three decimal places.) critical value =|3.050 X %3D What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic =| 1.692 v o
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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![## Independent Samples t-Test
### Problem Statement
You wish to test the following claim ( \(H_a\) ) at a significance level of \( \alpha = 0.002 \).
\[
\begin{aligned}
H_0: \mu &= 84.8 \\
H_a: \mu &> 84.8 \\
\end{aligned}
\]
### Given Data
- Population standard deviation, \(\sigma = 15.7\)
- Sample mean, \(M = 88.9\)
- Sample size, \(n = 42\)
### Hypothesis Test
You believe the population is normally distributed and you know the standard deviation. The goal is to determine the critical value and test statistic for this sample.
### Calculations
**Finding the Critical Value:**
- Significance level (\( \alpha \) ) = 0.002
- Critical value (accurate to three decimal places):
\[
\text{critical value} = 3.050 \quad (\text{incorrect})
\]
**Finding the Test Statistic:**
- Given the sample mean (\( M \) ), population mean (\( \mu \) ), population standard deviation (\( \sigma \) ), and sample size (\( n \) ):
- Test statistic (accurate to three decimal places):
\[
\text{test statistic} = 1.692 \quad (\text{correct})
\]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fbbcfe71f-e5aa-493d-ada8-4282b114e3cf%2F8a922c27-3f34-4773-bb7d-74d50e34fa6e%2Fgofu0p_processed.jpeg&w=3840&q=75)
Transcribed Image Text:## Independent Samples t-Test
### Problem Statement
You wish to test the following claim ( \(H_a\) ) at a significance level of \( \alpha = 0.002 \).
\[
\begin{aligned}
H_0: \mu &= 84.8 \\
H_a: \mu &> 84.8 \\
\end{aligned}
\]
### Given Data
- Population standard deviation, \(\sigma = 15.7\)
- Sample mean, \(M = 88.9\)
- Sample size, \(n = 42\)
### Hypothesis Test
You believe the population is normally distributed and you know the standard deviation. The goal is to determine the critical value and test statistic for this sample.
### Calculations
**Finding the Critical Value:**
- Significance level (\( \alpha \) ) = 0.002
- Critical value (accurate to three decimal places):
\[
\text{critical value} = 3.050 \quad (\text{incorrect})
\]
**Finding the Test Statistic:**
- Given the sample mean (\( M \) ), population mean (\( \mu \) ), population standard deviation (\( \sigma \) ), and sample size (\( n \) ):
- Test statistic (accurate to three decimal places):
\[
\text{test statistic} = 1.692 \quad (\text{correct})
\]
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