Van guessed on all 8 questions of a multiple-choice quiz. each question has 4 answer choices. what is the probability that he got exactly 1 question correct? round the answer to the nearest thousandth.

0.033
0.267
0.733
0.801

0.267

Step-by-step explanation:

This can be solved using the binomial probability formula which is:

Where

n is total number of trials (here, the total number of questions is 8, so n = 8)

k is the number of attempts we are looking for (here, we want to find probability of 1 question correct, so k = 1)

p is the probability of success (here, success is getting a questions right. Since there are 4 choices and 1 is right, probability of right = 1/4)

Plugging all the info into the formula we get:

Second choice is right.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

it shoild be o

step-by-step explanation: