The average final exam score for the statistics course is 81%. A professor wants to see if the a exam score for students who are given colored pens on the first day of class is higher. The fina for the 16 randomly selected students who were given the colored pens are shown below. AssL distribution of the population is normal. 81, 81, 96, 78, 92, 94, 87, 92, 75, 87, 69, 98, 68, 95, 98, 92 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Но: 2 Select an answer H1: ? Select an answer c. The test statistic ? (please show your answer to 3 decimal places.)

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**Title: Hypothesis Testing for Exam Score Averages**

**Context:**
The average final exam score for the statistics course is 81%. A professor is investigating whether students who are provided with colored pens on the first day of class perform better. The final exam scores for a sample of 16 students, who received colored pens, are listed below. Assume a normal distribution of the population.

**Sample Scores:**
81, 81, 96, 78, 92, 94, 87, 92, 75, 87, 69, 98, 68, 95, 98, 92

**Research Question:**
What can be concluded at the α = 0.05 level of significance?

**Steps to Follow:**

a. **Test Selection:**
   - Determine the appropriate statistical test to use.

b. **Hypotheses:**
   - Null Hypothesis (\(H_0\)): Define using the drop-down options.
   - Alternative Hypothesis (\(H_1\)): Define using the drop-down options.

c. **Test Statistic:**
   - Calculate the test statistic (show answer to 3 decimal places).

d. **P-Value:**
   - Determine the p-value (show answer to 4 decimal places).

e. **Comparison:**
   - Compare the p-value to α.

f. **Decision:**
   - Based on the comparison, decide whether to reject the null hypothesis.

g. **Conclusion:**
   - Choose the correct conclusion from the options provided:
     1. The data suggests the population mean is significantly higher than 81 at α = 0.05.
     2. The data suggests the population mean is not significantly higher than 81 at α = 0.05.
     3. The data suggests the population mean final exam score for students with colored pens is not significantly higher than 81 at α = 0.05. 

**Note:** Each step must be followed carefully to draw a reliable conclusion about the effectiveness of providing colored pens to improve exam scores.
Transcribed Image Text:**Title: Hypothesis Testing for Exam Score Averages** **Context:** The average final exam score for the statistics course is 81%. A professor is investigating whether students who are provided with colored pens on the first day of class perform better. The final exam scores for a sample of 16 students, who received colored pens, are listed below. Assume a normal distribution of the population. **Sample Scores:** 81, 81, 96, 78, 92, 94, 87, 92, 75, 87, 69, 98, 68, 95, 98, 92 **Research Question:** What can be concluded at the α = 0.05 level of significance? **Steps to Follow:** a. **Test Selection:** - Determine the appropriate statistical test to use. b. **Hypotheses:** - Null Hypothesis (\(H_0\)): Define using the drop-down options. - Alternative Hypothesis (\(H_1\)): Define using the drop-down options. c. **Test Statistic:** - Calculate the test statistic (show answer to 3 decimal places). d. **P-Value:** - Determine the p-value (show answer to 4 decimal places). e. **Comparison:** - Compare the p-value to α. f. **Decision:** - Based on the comparison, decide whether to reject the null hypothesis. g. **Conclusion:** - Choose the correct conclusion from the options provided: 1. The data suggests the population mean is significantly higher than 81 at α = 0.05. 2. The data suggests the population mean is not significantly higher than 81 at α = 0.05. 3. The data suggests the population mean final exam score for students with colored pens is not significantly higher than 81 at α = 0.05. **Note:** Each step must be followed carefully to draw a reliable conclusion about the effectiveness of providing colored pens to improve exam scores.
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