Adriving exam consists of 29 multiple-choice questions. each of the 29 answers is either right or wrong. suppose the probability that a student makes fewer than 6 mistakes on the exam is 0.26 and that the probability that a student makes from 6 to 20 (inclusive) mistakes is 0.53. find the probability of each of the following outcomes. a. a student makes more than 20 mistakes b. a student makes 6 or more mistakes c. a student makes at most 20 mistakes d. which two of these three events are complementary?

Answer and explanation:

Given : A driving exam consists of 29 multiple-choice questions. Each of the 29 answers is either right or wrong. Suppose the probability that a student makes fewer than 6 mistakes on the exam is 0.26 and that the probability that a student makes from 6 to 20 (inclusive) mistakes is 0.53.

Let X be the number of mistake

To find : The probability of each of the following outcomes.

a) A student makes more than 20 mistakes

i.e.

b. A student makes 6 or more mistakes

i.e.

c. A student makes at most 20 mistakes

i.e.

Using 'a' part  

d. Which two of these three events are complementary?

The complement of an event happening is the exact opposite: the probability of it not happening.

According to definition,

Option a and c are complementary events.

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.

853.3

step-by-step explanation: