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STALIN [3.7K]
2 years ago
11

Question 9 20% of a particular brand of light bulbs fail in one year. What is the probability that three bulbs out of a random c

ollection of 8 bulbs fail in one year
Mathematics
1 answer:
Delvig [45]2 years ago
5 0

Answer:

The correct answer is 0.15

Step-by-step explanation:

According to the given scenario, the probability is as follows:

X\sim Bin (n,p)

Here

n = 8

p = 0.20 or 20%

Now this is a binomial probability distribution

P(X) = ^nC_x \times p^x \tmes (1 - p)^{n-x}\\\\P(3) = ^8C_3 \tims 0.20^3 \times (1 - 0.20)^5

= 0.15

Hence, the correct answer is 0.15

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If you started the problem by converting 1 pound to 16 ounces, would you get the same results?
Arturiano [62]

Answer:

yes

Step-by-step explanation:

you would get results bc results are results

4 0
3 years ago
I need help with this
erik [133]

Answer:

Female: 11

Male: 16

Total:

(1) 34

(2) 25

(3) 100

Step-by-step explanation:

Female:

45 - 18 - 16 = 11

Male:

55 - 25 - 14 = 16

Total:

(1) 18 + 16

(2) 14 + 11 = 25

(3) 45 + 55 =

8 0
2 years ago
Read 2 more answers
A zoo is keeping track of the weight of a baby elephant.the table shows the weight for the first, second, third, and fourth week
True [87]

Hello!

I would say the second option, because it looks like the most reasonable one.  The third and fourth options decrease, but we can see by the chart that in fact, the weight increases. Also, it wouldn't be the first option, because its showing that the wight is always constant and rate doesn't change. However, we can see that this is wrong and the rate actually does change.  Therefore, the second option looks like the most reasonable for this chart.

Hope this helps!

5 0
3 years ago
Read 2 more answers
Why is it important to consider scale when graphing inequalities?
Olegator [25]

Because to get a straight line you need a scale. Otherwise you will not be able to graph a straight line.

6 0
3 years ago
Drew orders a video game online for $50.00. He has a 30% discount
Damm [24]

50(30%) = 15

50 - 15 = 35

35 (6%) = 2.1

35 + 2.1 = $37.10

the total cost of his order is $37.10 !!

4 0
3 years ago
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