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3 years ago

Tell whether each set of events is independent or dependent (problems 1 - 4).

Mathematics

1 answer:

tatyana61 [14]3 years ago

7 0

Answer:

1 dependent

234 independent

Step-by-step explanation:

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11 th term of the following geometric sequence.<br> 10,50,250,1250

Natasha2012 [34]

Answer:

97,656,250

Step-by-step explanation:

The first term, a(1), is 10. The next is 5 times greater. And so on. Thus, the common ratio is 5, and the general formula for this sequence is

a(n) = a(1)*5^(n -1).

Therefore,

a(11) = 10*5^(11 - 1) = 10*5^10 = 97,656,250

6 0

2 years ago

After conducting a survey of all her classmates, Midge discovers that the amount of money everyone spends buying books each mont

andreyandreev [35.5K]

The mean is the average of the numbers: a calculated "central" value of a set of numbers.

Therefore: If the amount spent on books per month by all her classmates is leveled that amount would be $30

To calculate it: add up all the numbers, then divide by how many numbers there are

3 0

2 years ago

1a Find the greatest common factor ( GCF ) of 6 and 9

Wittaler [7]

Answer:

the GCF is 3 so 2b - 3k

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

F(x)= -1/3x+13 when value is f(-3)

almond37 [142]

Answer:

Step-by-step explanation:

f(x)=-1/3x+13

f(-3)=-1/3(-3)+13

f(-3)=3/3+13

f(-3)=1+13

f(-3)=14

4 0

1 year ago

Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follow

guajiro [1.7K]

Answer:

a) x = 1.52

b) s = 1.16

Step-by-step explanation:

We have that:

5 students watched 0 movies.

9 students watched 1 movie.

5 students watched 2 movies.

5 students watched 3 movies.

1 student watched 4 movies.

(a) Find the sample mean x.

Sum divided by the number of students. So

$x = \frac{5*0 + 9*1 + 5*2 + 5*3 + 1*4}{5 + 9 + 5 + 5 + 1} = \frac{38}{25} = 1.52$

(b) Find the approximate sample standard deviation, s.

Standard deviation of the sample.

Square root of the sum of the squares of the values subtracted from the mean, divided by the sample size subtracted by 1. So

$s = \sqrt{\frac{5*(0-1.52)^2 + 9*(1-1.52)^2 + 5*(2-1.52)^2 + 5*(3-1.52)^2 + 1*(4-1.52)^2}{24}} = \sqrt{\frac{32.24}{24}} = 1.16$

3 0

2 years ago