Suppose a cancer treatment successfully cures the disease in 67% of cases. An oncologist is developing a new treatment that they feel will cure this cancer at a higher rate. To test the hypothesis that the new treatment is more successful than the previous treatment, a random sample of 20 people is collected. • If the number of people in the sample that are cured is less than 16, we will not reject the null hypothesis that p = 0.67. • Otherwise, we will conclude that p > 0.67. Round all answers to 4 decimals. 1. Calculate a = P(Type I Error) assuming that p = 0.67. Use the Binomial Distribution. 2. Calculate 3 = P(Type II Error) for the alternative p : = 0.82. Use the Binomial Distribution. %3D 3. Find the power of the test for the alternative p 0.82. Use the Binomial Distribution.
Suppose a cancer treatment successfully cures the disease in 67% of cases. An oncologist is developing a new treatment that they feel will cure this cancer at a higher rate. To test the hypothesis that the new treatment is more successful than the previous treatment, a random sample of 20 people is collected. • If the number of people in the sample that are cured is less than 16, we will not reject the null hypothesis that p = 0.67. • Otherwise, we will conclude that p > 0.67. Round all answers to 4 decimals. 1. Calculate a = P(Type I Error) assuming that p = 0.67. Use the Binomial Distribution. 2. Calculate 3 = P(Type II Error) for the alternative p : = 0.82. Use the Binomial Distribution. %3D 3. Find the power of the test for the alternative p 0.82. Use the Binomial Distribution.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Transcribed Image Text:## Evaluating the Success of a New Cancer Treatment
Suppose a cancer treatment successfully cures the disease in 67% of cases. An oncologist is developing a new treatment that they believe will cure this cancer at a higher rate.
### Hypothesis Testing
To test the hypothesis that the new treatment is more successful than the previous treatment, a random sample of 20 people is collected.
- If the number of people in the sample that are cured is **less than 16**, we will not reject the null hypothesis that \( p = 0.67 \).
- Otherwise, we will conclude that \( p > 0.67 \).
**Round all answers to 4 decimals.**
### Statistical Calculations
1. **Calculate \( \alpha = P(\text{Type I Error}) \)** assuming that \( p = 0.67 \). *Use the Binomial Distribution.*
2. **Calculate \( \beta = P(\text{Type II Error})** for the alternative \( p = 0.82 \). *Use the Binomial Distribution.*
3. **Find the power of the test for the alternative \( p = 0.82 \). *Use the Binomial Distribution.*
In this study, \( \alpha \) represents the probability of incorrectly rejecting the null hypothesis when it is true (Type I Error). Whereas \( \beta \) represents the probability of failing to reject the null hypothesis when the alternative hypothesis is true (Type II Error). The power of the test, calculated as \( 1 - \beta \), indicates the test's ability to correctly detect an effect when there is one.
These calculations help determine the efficacy of the new cancer treatment in comparison to the current one.
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