Z-test or T-test

• A

• B

• C

• D

What are the steps in testing hypothesis?

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Do you think we need different statistical tests for these?

• Yes

• No

What factors might affect the choice of test?

1. Which of the following is the main difference between a Z-Test and a T-Test?

• A) Z-Test is used when the population standard deviation is known, while T-Test is used when it is unknown.

• B) Z-Test is used for small samples, while T-Test is used for large samples.

• C) Z-Test is only used for proportions, while T-Test is only used for means.

• D) Z-Test and T-Test are interchangeable.

2. If the variance is known, what test statistic is appropriate?

• A) Z-Test

• B) T-Test

• C) One-Tailed Test

• D) Two-Tailed Test

3. If in a sample n = 36 selected from a normal population, x = 56 and population standard deviation = 12, what statistical test is applicable to be used?

• A) Z-Test

• B) T-Test

• C) F-Test

• D) Two-Tailed Test

4. What appropriate tool is applicable if the population is normal, sample standard deviation is known, and the sample is less than 30?

• A) Z-Test

• B) T-Test

• C) F-Test

• D) Normal Test

5. Which of the following best explains why choosing the correct statistical test is important in research?

• A) It allows researchers to avoid statistical analysis altogether.

• B) It ensures accurate and reliable conclusions.

• C) It guarantees that all data will show significance.

• D) It helps in manipulating data to fit a hypothesis.

Questions❓

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