Find the surface area of the pyramid

g Determine if the following probability experiments represents a binomial experiment. Explain your answer as to why or why not.

Klio2033 [76]

Answer:

a) It is a binomial experiment

b) It is not a binomial experiment, since we do not have a value of n.

Step-by-step explanation:

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

So:

a) A poll of 1200 registered voters is conducted in which the respondents are asked whether they believe Congress should reform Social Security.

For each voter, there are only two outcomes. Either they believe the Congress should reform Social Security, or they do not believe.

There are 1200 voters, so $n = 1200$ .

Each voter has a probability of voting yes and a probability of voting no. So yes, it is a binomial experiment.

b) A baseball player who reaches base safely 30% of the time is allowed to bat until he reaches base safely for the third time. The number of at-bats required is recorded.

Here, there is no fixed number of at bats, so there is no value of n. So this is not a binomal experiment.

7 0

3 years ago

Which expression is equivalent to 27 + 45? (1 point)

s2008m [1.1K]

Answer:

C because 9*3 is 27, and 9 times 5 is 45 :D

have a great day! :'D

4 0

3 years ago

Read 2 more answers

During one month, a rental agency rented a total of 155 cars, trucks, and vans. Nine times as many cars were rented as vans, and

solong [7]

Answer:

The system of three equations is equal to

$x+y+z=155$

$y=9x$

$z=3y$

Step-by-step explanation:

Let

x ----> the number of cars rented during one month

y ----> the number of vans rented during one month

z ----> the number of trucks rented during one month

we know that

$x+y+z=155$ ----> equation A

$y=9x$ ---> equation B

$z=3y$ ----> equation C

8 0

3 years ago

A group of winning ticket holders share equally 90,000,000 lottery. Before the money is divided, three more winning ticket holde

Kruka [31]

Let's assume

people were in the original group of winners as x

A group of winning ticket holders share equally 90,000,000 lottery

Before the money is divided, three more winning ticket holders are declared

so, total number of winning tickes =x+3

each persons share is reduced to 5,000,000

so, total money =5,000,000*(x+3)

and this must be equal to total money

$5000000(x+3)=90,000,000$

now, we can solve for x

and we get

$x+3=18$

Subtrac both sides by 3

$x+3-3=18-3$

$x=15$

so,

number of people were in the original group of winners is 15 ...........Answer

6 0

3 years ago

Decimals place value<br> 0.007 is ?

Lady bird [3.3K]

The decimal place is in the thousandth place
0.007
1st 0: tenth
2nd 0: Hundredth
3rd (7): thousandth

6 0

3 years ago