mline Assume that, on the average, normal rhesus monkeys spend an mean of 60 minutes dreaming while sleeping at night (thus, u 60 minutes). Time spent dreaming is E typically referred to as REM sleep (Rapid Eye Movement). You are interested in the effects a new dream-enhancing drug has on dreaming since an increase in the time spent dreaming while sleeping is thought to be a good thing in terms of getting a "restful" sleep. You want to pursue testing the drug in humans if there is any evidence that it significantly increases nightly dreaming time in these nonhuman primates. Ten rhesus monkeys are administered the drug in the morning and their dream time (in minutes) is monitored that night. The alternate hypothesis is: the drug will increase time spent dreaming, or the time in REM sleep. You obtain the following times (minutes) each monkey spent dreaming: 52, 69, 74, 60, 67, 65, 69, 55, 63, 68 Set alpha at a- .01, and complete step 4 of the hypothesis testing procedure, what decision should the researcher make regarding the drug's effect on REM time? O The researcher should retain Ho and conclude that the new drug increases time in REM sleep. O The researcher should retain HA and conclude that the new drug increases time in REM sleep. O The researcher should reject Hoand conclude that the new drug increases time in REM sleep. The researcher should reject H. and conclude that the new drus does not increase time in

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### Exploring the Effects of a Dream-Enhancing Drug on REM Sleep in Rhesus Monkeys

**Background:**
Normal rhesus monkeys dream for an average of 60 minutes during sleep, known as REM (Rapid Eye Movement) sleep. The increase in dream time is considered beneficial for achieving restful sleep. The purpose of this study is to investigate the effects of a new dream-enhancing drug on the dreaming time of monkeys to explore potential applications for human sleep improvement.

**Study Design:**
- **Objective:** To test if the drug significantly increases REM sleep time in monkeys.
- **Method:** The drug was administered to ten rhesus monkeys in the morning, and their REM sleep duration was monitored at night.
- **Alternate Hypothesis (H₁):** The drug increases time spent in REM sleep.

**Data Collected:**
The minutes spent dreaming by each of the ten monkeys after drug administration were recorded as follows:
- 52, 69, 74, 60, 67, 65, 69, 55, 63, 68

**Statistical Analysis:**
- **Significance Level (α):** 0.01
- The researcher must determine if the drug effectively increases REM sleep time by completing step 4 of the hypothesis testing.

**Decision Options:**
1. **Retain H₀:** Conclude that the drug does not increase REM sleep.
2. **Retain H₁:** Conclude that the drug increases REM sleep.
3. **Reject H₀:** Conclude that the drug increases REM sleep.
4. **Reject H₁:** Note that both retention options support different conclusions based on statistical findings.

The choice of the decision will help understand the drug's potential effects on enhancing sleep through increased REM time.
Transcribed Image Text:### Exploring the Effects of a Dream-Enhancing Drug on REM Sleep in Rhesus Monkeys **Background:** Normal rhesus monkeys dream for an average of 60 minutes during sleep, known as REM (Rapid Eye Movement) sleep. The increase in dream time is considered beneficial for achieving restful sleep. The purpose of this study is to investigate the effects of a new dream-enhancing drug on the dreaming time of monkeys to explore potential applications for human sleep improvement. **Study Design:** - **Objective:** To test if the drug significantly increases REM sleep time in monkeys. - **Method:** The drug was administered to ten rhesus monkeys in the morning, and their REM sleep duration was monitored at night. - **Alternate Hypothesis (H₁):** The drug increases time spent in REM sleep. **Data Collected:** The minutes spent dreaming by each of the ten monkeys after drug administration were recorded as follows: - 52, 69, 74, 60, 67, 65, 69, 55, 63, 68 **Statistical Analysis:** - **Significance Level (α):** 0.01 - The researcher must determine if the drug effectively increases REM sleep time by completing step 4 of the hypothesis testing. **Decision Options:** 1. **Retain H₀:** Conclude that the drug does not increase REM sleep. 2. **Retain H₁:** Conclude that the drug increases REM sleep. 3. **Reject H₀:** Conclude that the drug increases REM sleep. 4. **Reject H₁:** Note that both retention options support different conclusions based on statistical findings. The choice of the decision will help understand the drug's potential effects on enhancing sleep through increased REM time.
**Transcription for Educational Website:**

**Hypothesis Testing on REM Sleep and Drug Impact**

Data: 52, 69, 74, 60, 67, 65, 69, 55, 63, 68

**Task**

Set alpha at \( \alpha = 0.01 \), and complete step 4 of the hypothesis testing procedure. What decision should the researcher make regarding the drug's effect on REM time?

**Options:**

- \( \bigcirc \) The researcher should retain \( H_0 \) and conclude that the new drug increases time in REM sleep.
- \( \bigcirc \) The researcher should retain \( H_A \) and conclude that the new drug increases time in REM sleep.
- \( \bigcirc \) The researcher should reject \( H_0 \) and conclude that the new drug increases time in REM sleep.
- \( \bigcirc \) The researcher should reject \( H_A \) and conclude that the new drug does not increase time in REM sleep.
- \( \bigcirc \) The researcher should retain \( H_0 \) and conclude that the new drug does not increase time in REM sleep.

**Note**: The task involves selecting the appropriate decision based on statistical hypothesis testing procedures at an alpha level of 0.01.
Transcribed Image Text:**Transcription for Educational Website:** **Hypothesis Testing on REM Sleep and Drug Impact** Data: 52, 69, 74, 60, 67, 65, 69, 55, 63, 68 **Task** Set alpha at \( \alpha = 0.01 \), and complete step 4 of the hypothesis testing procedure. What decision should the researcher make regarding the drug's effect on REM time? **Options:** - \( \bigcirc \) The researcher should retain \( H_0 \) and conclude that the new drug increases time in REM sleep. - \( \bigcirc \) The researcher should retain \( H_A \) and conclude that the new drug increases time in REM sleep. - \( \bigcirc \) The researcher should reject \( H_0 \) and conclude that the new drug increases time in REM sleep. - \( \bigcirc \) The researcher should reject \( H_A \) and conclude that the new drug does not increase time in REM sleep. - \( \bigcirc \) The researcher should retain \( H_0 \) and conclude that the new drug does not increase time in REM sleep. **Note**: The task involves selecting the appropriate decision based on statistical hypothesis testing procedures at an alpha level of 0.01.
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