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ella [17]
3 years ago
9

On a multiple choice test with 17 questions, each question has four possible answer, one of which is correct. For students who g

uess at all answers, find the mean for the number of correct answers.
a. 12.8
b. 8.5
c. 4.3
d. 5.7
Mathematics
1 answer:
Virty [35]3 years ago
3 0

Answer:

C. 4.3

Step-by-step explanation:

Given that

n = 17

P = 1/4

Using binomial

Mean = np

Mean = 17 × (1/4)

= 17 × .25

= 4.25

Approximately = 4.3

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5 0
2 years ago
With out subtracting 8.5-4.64 determine what digit will be in the hundreds place
icang [17]
A zero (0) would be in the hundreds place.

      8.50
-     4.64
---------
      3.86

 ^ ^ ^ ^ ^

 HTO.T H

 UEN.E U

 NNE .NN

 DSS .T D

<span> R      .H R</span>

<span> E      .S E</span>

<span> D    .     T</span>

<span> S    .     H</span>

<span>              S</span>


8 0
3 years ago
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