A survey found that 55% of college presidents believe that their online education courses are as good as or superior to courses that use traditional face-to-face instruction. a. Give the null hypothesis for testing the claim made by the survey. b. Give the rejection region for a two-tailed test conducted at a = 0.01. a. What is the null hypothesis? = d:°H 0.55 (Type an integer or a decimal.) b. What is the rejection region? Select the correct choice below and fill in any answer boxes to complete your choice. (Round to three decimal places as needed.) O A. O C. z< O D. z>

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**Survey Analysis on Online Education Perception Among College Presidents**

A recent survey found that 55% of college presidents believe that their online education courses are as good as or superior to traditional face-to-face instruction. The following prompts illustrate the steps to test the claim made by the survey statistically.

### Question:
**a. Give the null hypothesis for testing the claim made by the survey.**  
**b. Give the rejection region for a two-tailed test conducted at α = 0.01.**

#### Answer:

**a. What is the null hypothesis?**

The null hypothesis (H₀) for the survey claim can be expressed as:

\[ H₀: p = 0.55 \]

where \( p \) represents the proportion of college presidents who believe that their online courses are as good as or superior to traditional face-to-face instruction.

**b. What is the rejection region?**

The rejection region for a two-tailed test at α = 0.01 requires determining the critical z-values that correspond to this significance level. The options given are:

- **A. \[ \_\_\_\ < z < \_\_\_\ ]**
- **B. \[ z < \_\_\ \text{ or } z > \_\_\ ]**
- **C. \[ z < \_\_\_\ ]**
- **D. \[ z > \_\_\_\ ]**

To find the critical z-values, we need to locate the z-scores that form the cutoff points for the tails. The area in each tail will be \(\frac{\alpha}{2} = 0.005\). Using z-tables or a statistical calculator, the critical values for a two-tailed test at α = 0.01 are approximately ±2.576.

Thus, the rejection region to test this hypothesis is:

\[ z < -2.576 \text{ or } z > 2.576 \]

Figuratively, this corresponds to option:

- **B. \[ z < -2.576 \text{ or } z > 2.576 \]**
Transcribed Image Text:**Survey Analysis on Online Education Perception Among College Presidents** A recent survey found that 55% of college presidents believe that their online education courses are as good as or superior to traditional face-to-face instruction. The following prompts illustrate the steps to test the claim made by the survey statistically. ### Question: **a. Give the null hypothesis for testing the claim made by the survey.** **b. Give the rejection region for a two-tailed test conducted at α = 0.01.** #### Answer: **a. What is the null hypothesis?** The null hypothesis (H₀) for the survey claim can be expressed as: \[ H₀: p = 0.55 \] where \( p \) represents the proportion of college presidents who believe that their online courses are as good as or superior to traditional face-to-face instruction. **b. What is the rejection region?** The rejection region for a two-tailed test at α = 0.01 requires determining the critical z-values that correspond to this significance level. The options given are: - **A. \[ \_\_\_\ < z < \_\_\_\ ]** - **B. \[ z < \_\_\ \text{ or } z > \_\_\ ]** - **C. \[ z < \_\_\_\ ]** - **D. \[ z > \_\_\_\ ]** To find the critical z-values, we need to locate the z-scores that form the cutoff points for the tails. The area in each tail will be \(\frac{\alpha}{2} = 0.005\). Using z-tables or a statistical calculator, the critical values for a two-tailed test at α = 0.01 are approximately ±2.576. Thus, the rejection region to test this hypothesis is: \[ z < -2.576 \text{ or } z > 2.576 \] Figuratively, this corresponds to option: - **B. \[ z < -2.576 \text{ or } z > 2.576 \]**
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