问题


There is a single choice question about high school statistics. Answer the question by replying A, B, C or D.
Question: A drug company will conduct a randomized controlled study on the effectiveness of a new heart disease medication called Heartaid. Heartaid is more expensive than the currently used medication. The analysis will include a significance test with H0: Heartaid and the current medication are equally effective at preventing heart disease and HA: Heartaid is more effective than the current medication at preventing heart disease. Which of these would be a potential consequence of a Type II error?
A. Patients will spend more money on Heartaid, even though it is actually not any more effective than the current medication.
B. Doctors will begin to prescribe Heartaid to patients, even though it is actually not any more effective than the current medication.
C. Patients will continue to use the current medication, even though Heartaid is actually more effective.
D. Researchers will calculate the wrong P-value, making their advice to doctors invalid.
Answer:

答案

模型 模型答案 正确答案
金声玉亮2.0

C. Patients will continue to use the current medication, even though Heartaid is actually more effective.

Explanation: A Type II error occurs when a false null hypothesis is not rejected. In this case, the null hypothesis is that Heartaid and the current medication are equally effective, and the alternative hypothesis is that Heartaid is more effective. If a Type II error occurs, it means that the study fails to detect a real difference in effectiveness between Heartaid and the current medication, and the null hypothesis is not rejected. As a result, patients will continue to use the current medication, even though Heartaid is actually more effective.

This question requires the test-taker to understand the concept of Type II error and its consequences in the context of a randomized controlled study. It also requires the test-taker to analyze the given information and apply statistical concepts to a real-world scenario.

Note: The other options are incorrect because:

A. This option describes a consequence of a Type I error, not a Type II error. A Type I error occurs when a true null hypothesis is rejected, which would lead to patients spending more money on Heartaid even though it is not more effective.

B. This option also describes a consequence of a Type I error, not a Type II error.

D. This option is incorrect because a Type II error does not affect the calculation of the P-value. A Type II error occurs when a false null hypothesis is not rejected, which is a consequence of the study's design and sample size, not the calculation of the P-value.
C
deepseekr1

The question concerns the consequences of a Type II error in a hypothesis test comparing the effectiveness of Heartaid and the current medication. A Type II error occurs when the null hypothesis (H₀) is not rejected even though the alternative hypothesis (Hₐ) is true. In this scenario, it means failing to recognize that Heartaid is more effective when it actually is.

**Analysis of options:**
- **A** and **B** describe situations where Heartaid is adopted despite being ineffective, which aligns with a **Type I error** (false positive), not Type II.
- **C** states that patients continue using the current medication even though Heartaid is better. This directly matches the consequence of a Type II error: failing to detect a true effect, leading to inaction when a better option exists.
- **D** refers to calculation errors affecting the p-value, which is unrelated to Type II errors (a conceptual mistake in inference, not procedural errors).

**Answer:** C
C
gpto1 C C
GPT-4o C. Patients will continue to use the current medication, even though Heartaid is actually more effective. C
llama3.1-70B-Instruct

C
C
llama3.1-405B-Instruct

C. Patients will continue to use the current medication, even though Heartaid is actually more effective.

Explanation: A Type II error occurs when a false null hypothesis is not rejected. In this case, the null hypothesis is that Heartaid and the current medication are equally effective, and the alternative hypothesis is that Heartaid is more effective. If a Type II error occurs, it means that the study fails to detect a real difference in effectiveness between Heartaid and the current medication, and the null hypothesis is not rejected. As a result, patients will continue to use the current medication, even though Heartaid is actually more effective.

This question requires the test-taker to understand the concept of Type II error and its consequences in the context of a randomized controlled study. It also requires the test-taker to analyze the given information and apply statistical concepts to a real-world scenario.

Note: The other options are incorrect because:

A. This option describes a consequence of a Type I error, not a Type II error. A Type I error would occur if the study incorrectly concludes that Heartaid is more effective than the current medication when it is not.

B. This option also describes a consequence of a Type I error, not a Type II error.

D. This option is incorrect because a Type II error does not affect the calculation of the P-value. A Type II error occurs when a false null hypothesis is not rejected, which is a consequence of the study's design and sample size, not the calculation of the P-value.
C
DeepSeek-Coder-V2 C. Patients will continue to use the current medication, even though Heartaid is actually more effective. C
Qwen2-72B-Instruct C. Patients will continue to use the current medication, even though Heartaid is actually more effective. C
baichuan4 A. Patients will spend more money on Heartaid, even though it is actually not any more effective than the current medication. C
doubao C

A Type II error is the failure to reject the null hypothesis when it is actually false. In this case, it means not detecting that Heartaid is more effective when it really is. So patients will continue to use the current medication instead of the more effective Heartaid, which is a potential consequence of a Type II error.
C
minimax C. Patients will continue to use the current medication, even though Heartaid is actually more effective. C
kimi C. Patients will continue to use the current medication, even though Heartaid is actually more effective.

A Type II error occurs when the null hypothesis (H0) is not rejected when it is actually false. In this case, H0 is that Heartaid and the current medication are equally effective. If a Type II error occurs, it means that the study fails to show that Heartaid is more effective than the current medication, even though it actually is. Therefore, patients will continue to use the current medication, missing out on the potentially better treatment.
C
wenxinyiyan C

Explanation:
A Type II error occurs when the null hypothesis (H0) is not rejected, even though it is actually false. In this context, that would mean concluding that Heartaid is not more effective than the current medication, even though it actually is.

Let's look at the options:

A. This option suggests that patients will spend more money on Heartaid, even though it's not more effective. This would be a consequence of a Type I error, where you reject the null hypothesis when it's actually true (i.e., concluding that Heartaid is more effective when it's not).

B. This option is similar to A. It suggests that doctors will begin prescribing Heartaid based on a false conclusion that it's more effective. Again, this is a consequence of a Type I error.

C. This option suggests that patients will continue to use the current medication, even though Heartaid is actually more effective. This is a direct consequence of a Type II error, where you fail to reject the null hypothesis when it's actually false.

D. This option is not directly related to Type I or Type II errors. Calculating the wrong P-value is a methodological error that could lead to either Type I or Type II errors, depending on the context, but it's not a direct consequence of either type of error.

Therefore, the correct answer is C.
C
zhipu C. Patients will continue to use the current medication, even though Heartaid is actually more effective.

A Type II error occurs when the null hypothesis (H0) is not rejected when it is actually false. In this context, that means failing to recognize that Heartaid is more effective than the current medication, leading to patients continuing to use the less effective current medication.
C
gpto1 C C
deepseekv3 A Type II error occurs when the null hypothesis (H0) is not rejected, even though it is false. In this context, a Type II error would mean that the researchers fail to conclude that Heartaid is more effective than the current medication, even though it actually is.

The potential consequence of a Type II error is:
**C. Patients will continue to use the current medication, even though Heartaid is actually more effective.**

This is because the study would fail to detect the true superiority of Heartaid, leading to continued use of the less effective current medication.

Answer: **C**
C