TCSHS Stat10 Hypothesis Testing Quiz

When is a Type I error committed?

When is a Type II error committed?

If the computed z-value is 2.015 and the critical value is 1.833, which of the following statements could be true?

If the computed z-value is - 1.290 and the critical value is - 2.571, which of the following statements could be true?

Based on the first claim of Sofia in Activity 2 that 'the average daily usage of social media of her friends is the same as the global average usage', formulate two hypotheses about the global average usage (𝜇) and the average usage of her friends (𝑥̅) on the blanks provided below.

If Sofia used a 0.10 level of significance, what are the chances that she would have a wrong conclusion if the two values have no significant difference?

What would be the consequence of a Type I error in this setting?

What would be the consequence of a Type II error in this setting?

What is the probability of Type I error?

Directions: State the null and the alternative hypotheses of the following statements. A medical trial is conducted to test whether or not a new medicine reduces uric acid by 50%.