1) From 8 names on a ballot, a committee of 3 will be elected to attend a political national convention How many different committees are possible?

A) permutations

B) combinations

a) 336 different committees are possible.

b) 56 different committees are possible.

Step-by-step explanation:

Permutations:

is the number of different combinations of x objects from a set of n elements, given by the following formula.

Combinations:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

In this question:

A) permutations

336 different committees are possible.

B) combinations

56 different committees are possible.

hello,

b) 62.47% of the students are between 14 and 18 years old.

step-by-step explanation:

mean = 15 and standard deviation = 2

student between 14 to 18

formula used z-score

for age 14 , z score

using z-table , p(z> -0.5)=0.3085

for age 18 , z score

using z-table , p(z< 1.5)=0.9332

p(-0.5< z< 1.5)=0.9332-0.3085 = 0.6247

thus, 62.47% of the students are between 14 and 18 years old.

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step-by-step explanation:

answer: 2 answers

step-by-step explanation: the first one means to spread the product throughout the marketplace such that a large number of people can buy it.  

the second means the process of making a product or service available for the consumer or business user that needs it.

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