Question

answer the question, considering an event to be \unusual\ if its probability is less than or equal to 0.05. 9) a multiple choice question has 18 possible answers, only one of which is correct. is it \unusual\ to answer a question correctly if a random guess is made? a) yes b) no

Explanation:

Step1: Calculate the probability of guessing correctly.

The number of possible outcomes is 18 (since there are 18 possible answers), and the number of favorable outcomes (correct answer) is 1. The probability \( P \) of an event is given by the formula \( P=\frac{\text{Number of favorable outcomes}}{\text{Number of possible outcomes}} \). So, \( P = \frac{1}{18} \approx 0.0556 \).

Step2: Compare the probability with 0.05.

We check if \( 0.0556 \leq 0.05 \). Since \( 0.0556>0.05 \), the event of guessing correctly is not unusual.

Answer:

B) No