Question

1.) An urn contains 10 red marbles, 5 white marbles, and 8 blue marbles marbles. A child randomly selects three (without replacement) from the urn. Round to four decimal places.

1. Find the probability all three marbles are the same color.   
   
2. Find the probability that none of the three marbles are white.

2.)Calculate the standard deviation and variance of the sample quantitative data shown, to two decimal places.

x

2.6

6

16.7

20.3

9.1

Standard deviation:

Variance:

Answer 1