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alina1380 [7]
3 years ago
10

In a given binomial distribution, there are 625 trials, and the probability of success is p =0.29. What is the variance?

Mathematics
1 answer:
Shkiper50 [21]3 years ago
3 0

Answer:

128.69.

Step-by-step explanation:

The variance is np(1 - p)

= 625*(0.28) * 0.71

= 128.69.

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in a survey 27% of the people chose salads over a meat dish. In all 81 people chose salads. how many people were in the survey?
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Answer:

300

Step-by-step explanation:

27% = 81

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3 years ago
Question 3 (0.5 points)
nekit [7.7K]

Answer:

0.72

Step-by-step explanation:

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5 0
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Dmitry [639]
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5 0
3 years ago
What is pi divided by 2/3?
klasskru [66]
Given:
pi is equal to 3.14

3.14 ÷ 2/3

Rules in dividing fractions.
3.14 is the 1st fraction. It has a denominator of 1. 3.14/1
2/3 is the 2nd fraction

1) get the reciprocal of the 2nd fraction.
2/3 ⇒ 3/2

2) multiply the 1st fraction to the reciprocal of the 2nd fraction
3.14 * 3/2 = (3.14*3) / 2 = 9.42 / 2 = 4.71

Pi divided by 2/3 is 4.71

4 0
2 years ago
Read 2 more answers
How do I solve these two?
Bas_tet [7]

Answer:

1.D

2.B

Step-by-step explanation:

For the first one divide see which one is less which is D

For the second one Ive always used the method kcf keep change flip so you keep \frac{15}{1} the change ÷ to multiplication so then flip \frac{2}{9} so the equation would be

\frac{15}{1}x\frac{9}{2} so multiply the 15 by 9 then you get 135 then divide by 2 so thats your answer

8 0
3 years ago
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