Question
In a study regarding two types of video games and their relation to play way method of teaching, four types of conclusions can be arrived at, as listed below. Identify which of the statements can be treated as Type II error.
The correct answer is
Deciding the two types of video games are not related to play way method of teaching and they really are.
Understanding Type II Error in Hypothesis Testing
A Type II error occurs in hypothesis testing when the null hypothesis ($H_0$) is false, but it is not rejected. This is also known as a 'false negative'.
In this study:
- Null Hypothesis ($H_0$): The two types of video games are not related to the play way method of teaching.
- Alternative Hypothesis ($H_a$): The two types of video games are related to the play way method of teaching.
Analysis of Study Conclusions
Let's analyze each potential conclusion in the context of Type II error:
-
Option 1: Deciding the two types of video games are not related to play way method of teaching (Fail to reject $H_0$) and they really are not ( $H_0$ is true).
This represents a correct decision. -
Option 2: Deciding the two types of video games are related to play way method of teaching (Reject $H_0$) and they really are not ( $H_0$ is true).
This is a Type I error (rejecting a true null hypothesis). -
Option 3: Deciding the two types of video games are related to play way method of teaching (Reject $H_0$) and they really are ( $H_0$ is false).
This represents a correct decision (detecting the true relationship). -
Option 4: Deciding the two types of video games are not related to play way method of teaching (Fail to reject $H_0$) and they really are ( $H_0$ is false).
This is a Type II error (failing to reject a false null hypothesis).
Identifying the Type II Error
Based on the analysis, the scenario where the study concludes no relationship exists between video games and the teaching method, despite a real relationship actually existing, is the Type II error.
Therefore, the statement representing a Type II error is: Deciding the two types of video games are not related to play way method of teaching and they really are.
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Important Questions from Hypothesis testing - Teaching
- The null hypothesis in nonparametric test often _______.
1. Includes specification of a population's parameters
2. Is used to evaluate some general population aspect
3. Is very similar to that used in regression analysis
4. Simultaneously tests more than two population parameters - The _______ test determines whether there is a significant difference between the observed and hypothesized distribution for a sample.
1. Independence
2. Coefficient of determination
3. Correlation analysis
4. Goodness-of-fit - Match the LIST-I with LIST-II
LIST-I LIST-II A. One-Tailed Test I. Null hypothesis is rejected if the sample value is significantly higher or lower than the hypothesized value of the population parameter B. Paired difference Test II. A hypothesis test of the difference between the sample means of two independent samples C. Two-Tailed Test III. A sample value significantly above the hypothesized population value will lead to rejection of the null hypothesis D. Upper-Tailed Test IV. Concerned only with whether the observed value deviates from the hypothesized value in one direction
Choose the correct answer from the options given below: - Arrange in correct sequence the steps for testing Statistical Hypothesis :
I. A random sample is drawn from population.
II. Specify the level of significance.
III. Value of the sample statistic is obtained.
IV. Obtained sample statistic is examined with the random sampling distribution of the statistic under consideration.
V. Formulate Null Hypothesis about a parameter of the population, along with an alternate hypothesis.
VI. Retain Null Hypothesis if particular sample outcome is in line with the expected outcomes, otherwise reject it and retain alternate hypothesis.
Codes : - Which set of stoichiometric coefficient correctly balance the equation ?
$$a. H_2O_2 + b. KMnO_4 + c. H_2SO_4 \to d. K_2SO_4 + e. MnSO_4 + f. H_2O + g. O_2$$
Select the correct answer from the codes given below :
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