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goblinko [34]
3 years ago
13

A binomial probability has p=.20 and n=100, what are the mean and standard deviation?

Mathematics
1 answer:
pychu [463]3 years ago
4 0
Mean: np=100\times0.20=20

Standard deviation: \sqrt{np(1-p)}=\sqrt{100\times0.20\times0.80}=4
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a vido game system is being sold at a 4% discount. if the discount results in a saving of$11,96, what is the original price of t
kramer

Answer:

$299

Step-by-step explanation:

Divide the discount amount through the discount percentage and multiply with a hundred percent, resulting in the full price.

($11,96)/4*100=$299

8 0
3 years ago
Twice as many students are in the chess club as in the fencing club.The number of students in the fencing club is one fifth the
jekas [21]

Answer:

28 students

Step-by-step explanation:

Let number of students in cooking club = x

Number of students in fencing club = 1/5 x

Number of students in chess club = 2(1/5)x

Since, There are 42 more students in the cooking club than in the chess club

Then ;

Number of students in chess club = Number of students in cooking club - 42

2(1/5)x = x - 42

(2/5)x - x = - 42

(2/5)x - x = - 42

-0.6x = - 42

x = 42 / 0.6

x = 70

Hence, number of students in chess club :

(2/5) * 70 = 28

4 0
3 years ago
Plz help fast fast plz plz plz divide 44/625 and 220/31.25
Irina-Kira [14]

the answer to 44/625 is0.0704

the answer to 220/31.25 is 7.04

7 0
3 years ago
Read 2 more answers
Please help me answer this question
taurus [48]

Answer:

The answer is21

6 0
2 years ago
Help would be appreciated
NemiM [27]
Hello!

First you have to find the area of the space

300 * 500 = 150000

Next you have to find the space 5 people take up

5 * 5 = 25

Divide these two numbers

150000 / 25 = 6000

multiply this by the amount of people take up that space

6000 * 5 = 30000

The answer is D)30,000 people

Hope this helps!
7 0
3 years ago
Read 2 more answers
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