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n200080 [17]
3 years ago
9

The question is on the attachement below and there is a tree diagram with information on it.

Mathematics
1 answer:
mylen [45]3 years ago
7 0

Answer:

56 times

Step-by-step explanation:

P(red & red) = 0.5×0.6 = 0.3

Expected no. = no. Of trials × p

No. of trials: 84/0.3 = 280

P(blue & blue) = 0.5×0.4 = 0.2

Expected no. = 280 × 0.2

= 56

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Answer:

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Step-by-step explanation:

Now use 5.6 in the equation. 5.6+0.4=6. This answer is correct.

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2 years ago
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In May, the school store sells 80 erasers. In June, the store sells only 16 erasers. What is the percent of change in erasers so
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Answer:  80%

Step-by-step explanation:

Since we have given that

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3 years ago
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Wewaii [24]

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7 0
2 years ago
It was reported that 23% of U.S. adult cellphone owners called a friend for advice about a purchase while in a store. If a sampl
leva [86]

Answer:

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Step-by-step explanation:

Let X the random variable of interest, on this case we now that:  

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3 years ago
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