3 years ago

In a survey 27% of people chose salads over meat. In all 81 people chose salads. how many people are in the survey?

1 answer:

Lynna [10]3 years ago

7 0

.27(x) = 81

x = 81/.27

x=300 people

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Alex73 [517]

The mean is 0.0118 approximately. So option C is correct

<h3><u>Solution:</u></h3>

Given that , The probability of winning a certain lottery is $\frac{1}{77076}$ for people who play 908 times

We have to find the mean number of wins

$\text { The probability of winning a lottery }=\frac{1}{77076}$

Assume that a procedure yields a binomial distribution with a trial repeated n times.

Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial.

$n=908, \text { probability } \mathrm{p}=\frac{1}{77076}$

$\text { Then, binomial mean }=n \times p$

$\begin{array}{l}{\mu=908 \times \frac{1}{77076}} \\\\ {\mu=\frac{908}{77076}} \\\\ {\mu=0.01178}\end{array}$

Hence, the mean is 0.0118 approximately. So option C is correct.

4 0

3 years ago

m_a_m_a [10]

M=2 or m=-3 hope this helps

5 0

3 years ago

Alik [6]

Answer:

-6

Step-by-step explanation:

-|6|=-6

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1 year ago

Cloud [144]

Answer:

The answer is 10.5 in decimal form

8 0

3 years ago

professor190 [17]

270 x 0.75 = 202.5 students, so say 203 students

6 0

3 years ago