All categories

3 years ago

What is margin of error??

Mathematics

1 answer:

Tems11 [23]3 years ago

8 0

Answer:

The margin of error for a sample size of 250 is 6

Step-by-step explanation:

The margin of error is given as

1/square root of the sample size

Thus, margin of error for a sapless size of 250 is

1/√250

= 1/15. 811

= 6

You might be interested in

PLEASE HELP

dsp73

Answer:

All events are independent

Step-by-step explanation:

You are given the table

$\begin{array}{cccc}&\text{Chocolate}&\text{Vanilla}&\text{Total}\\\text{Adults}&0.21&0.39&0.60\\\text{Children}&0.14&0.26&0.40\\\text{Total}&0.35&0.65&1.00\end{array}$

Two events A and B are independent when

$Pr(A\cap B)=Pr(A)\cdot Pr(B)$

a) A="Chocolate"

B="Adults"

A and B="Chocolate and Adults"

$Pr(A)=0.35\\ \\Pr(B)=0.60\\ \\Pr(A\cap B)=0.21$

Since $0.35\cdot 0.60=0.21$ events are independent

b) A="Children"

B="Chocolate"

A and B="Children and Chocolate"

$Pr(A)=0.40\\ \\Pr(B)=0.35\\ \\Pr(A\cap B)=0.14$

Since $0.40\cdot 0.35=0.14$ events are independent

c) A="Vanilla"

B="Children"

A and B="Vanilla and Children"

$Pr(A)=0.65\\ \\Pr(B)=0.40\\ \\Pr(A\cap B)=0.26$

Since $0.65\cdot 0.40=0.26$ events are independent

4 0

3 years ago

20points<br> Which represents the restrictions on the radical inequality

Aloiza [94]

The second i think you did good

3 0

2 years ago

Read 2 more answers

GUYS PLEASE HELP THIS IS DO IN A HOUR I AM BEGGING YOU

kirill [66]

Answer:

can you make the picture bigger and show the all of the answers, if yes i believe i can do the problem thank you

Step-by-step explanation:

7 0

2 years ago

If x=82902, what is... x*6930+93945*x/7?

olganol [36]

Answer: 1194677035.714285

Step-by-step explanation:

= {(82902 * 6930)+(93945*82902)} / 7

= (574510860 + 7788228390) / 7

= 8362739250 / 7

= 1194677035.714285

3 0

3 years ago

12 + 9/3 exponent 2<br><br> What is the answer?

ira [324]

9/3 = 3
3 exponent 3 = 27.

27 + 12 = 39

3 0

3 years ago

Read 2 more answers