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Umnica [9.8K]
1 year ago
13

A tv show had 4.4 x 106 viewers in the first week and 3.1 x 106 viewers in the second week. determine the average number of view

ers over the two weeks and write the final answer in scientific notation.
Mathematics
1 answer:
rosijanka [135]1 year ago
5 0

The average number of viewers over the two weeks are 3.75 X 10^6

A tv show had 4.4 x 10^6 viewers in the first week

and 3.1 x 10^6 viewers in the second week.

What is average number ?

This is the arithmetic mean, and is calculated by adding a group of numbers and then dividing by the count of those numbers.

To find the average number of viewers over the two weeks

Remove the decimal point.

4.4 x 10^6 write like this 4400000

Similarly, 3.1 x 10^6 write like this 3100000

Now, Solving the question

Therefore, the average will be  

4400000 + 3100000

= 7500000/2

=3750000

=3.75 X 10^6

and3.75 x 10^6

Thus , the average number of viewers over the two week  3.75 x 10^6

Learn more about Average Number at:

brainly.com/question/28376264

#SPJ4

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Approximately 14 percent of the population of Arizona is 65 years or older. A random sample of five persons from this population
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Answer:

A)0.8533

Step-by-step explanation:

For each person, there are only two possible outcomes. Either they are 65 or older, or they are not. The probability of a person being 65 or older is independent of any other person. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

14 percent of the population of Arizona is 65 years or older.

This means that p = 0.14

A random sample of five persons from this population is taken.

This means that n = 5

The probability that less than 2 of the 5 are 65 years or older is :

P(X < 2) = P(X = 0) + P(X = 1)

In which

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 0) = C_{5,0}.(0.14)^{0}.(0.86)^{5} = 0.4704

P(X = 1) = C_{5,1}.(0.14)^{1}.(0.86)^{4} = 0.3829

P(X < 2) = P(X = 0) + P(X = 1) = 0.4704 + 0.3829 = 0.8533

So the correct answer is:

A)0.8533

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3 years ago
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