A home improvement company is interested in whether the customer satisfaction rate is different from the 74% currently claimed. The company sponsored a survey of 190 customers and found that 151 customers were satisfied. What is the test statistic 2? Ex: 2.22 What is the p-value? Ex: 0.123 Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the company at a significance level of a = 0.05? Select v 3 Check Next

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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**Challenge Activity: 5.6.1: Hypothesis Test for a Population Proportion**

In this challenge, we consider a scenario where a home improvement company is investigating if their customer satisfaction rate deviates from the previously claimed 74%. To explore this, the company conducted a survey of 190 customers and found that 151 were satisfied.

**Task:**

- **What is the test statistic \( z \)?**  
  - Given Example: 2.22

- **What is the \( p \)-value?**  
  - Given Example: 0.123

- **Conclusion:**
  Does sufficient evidence exist to claim that the customer satisfaction rate differs from the company's statement at a significance level of \( \alpha = 0.05 \)?

Select the appropriate conclusion from the options provided and then verify your response by pressing the "Check" button. You can navigate to the next or previous sections using the “Next” and “Previous” buttons respectively.

**References:**

Grech, Victor, et al. “Unexplained differences in sex ratios at birth in Europe and North America.” *BMJ*, 324(7344), 27 April 2002.  
[Link to article](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1027777/)
Transcribed Image Text:**Challenge Activity: 5.6.1: Hypothesis Test for a Population Proportion** In this challenge, we consider a scenario where a home improvement company is investigating if their customer satisfaction rate deviates from the previously claimed 74%. To explore this, the company conducted a survey of 190 customers and found that 151 were satisfied. **Task:** - **What is the test statistic \( z \)?** - Given Example: 2.22 - **What is the \( p \)-value?** - Given Example: 0.123 - **Conclusion:** Does sufficient evidence exist to claim that the customer satisfaction rate differs from the company's statement at a significance level of \( \alpha = 0.05 \)? Select the appropriate conclusion from the options provided and then verify your response by pressing the "Check" button. You can navigate to the next or previous sections using the “Next” and “Previous” buttons respectively. **References:** Grech, Victor, et al. “Unexplained differences in sex ratios at birth in Europe and North America.” *BMJ*, 324(7344), 27 April 2002. [Link to article](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1027777/)
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