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FrozenT [24]
3 years ago
11

PLS ANSWER QUICKLY

Mathematics
2 answers:
Ne4ueva [31]3 years ago
7 0

Answer:

Answer Choice B

Step-by-step explanation:

63/256

nignag [31]3 years ago
5 0
Your question is related to the binomial probability

Although there is no picture, I will answer your question that is:

Find the probability of getting exactly 5 “heads” in 10 coin flips
Probability of getting a head = 1/5 and also 1/2 for getting a tail.
P(H) =1/2 and P(T) =1/2
Total # of flips =10;  Total # Heads requested = 5

¹⁰C₅ = (PH)⁵.P(T)¹⁰⁻⁵

¹⁰C₅ = (1/2)⁵.P(1/2)⁵ = 63/256  (answer B)

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Sixty percent of U.S. adults trust national newspapers to present the news fairly and accurately. You randomly select nine U.S.
Pavel [41]

Answer:

a) 0.251

b) 0.483

c) 0.0994

Step-by-step explanation:

We are given the following information:

We treat adult adults trusting national newspapers to present the news fairly and accurately as a success.

P(Adult trust) = 60% = 0.6

Then the number of adults follows a binomial distribution, where

P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 9

a) exactly five

P(x = 15) = \binom{9}{5}(0.6)^{5}(1-0.6)^{9-5} = 0.2508 \approx 0.251

b) at least six

We have to evaluate

P(x \geq 6) = P(x = 6) + P(x = 7) + P(x=8) + P(x=9) \\= \binom{9}{6}(0.6)^6(1-0.6)^3 + \binom{9}{7}(0.6)^7(1-0.6)^2 + \binom{9}{8}(0.6)^8(1-0.6)^1 +\binom{9}{9}(0.6)^9(1-0.6)^0\\= 0.482609 \approx 0.483

c) less than four

We have to evaluate

P(x < 4) = P(x = 0) + P(x = 1) + P(x=2) + P(x=3) \\= \binom{9}{0}(0.6)^0(1-0.6)^9 + \binom{9}{1}(0.6)^1(1-0.6)^8 + \binom{9}{2}(0.6)^2(1-0.6)^7 +\binom{9}{3}(0.6)^3(1-0.6)^6\\= 0.099352 \approx 0.0994

3 0
3 years ago
How do you figure out 10×1000
mario62 [17]
You simply just add a 0 to the end of 1000 since you are multiplying by 10.

1000
    10
--------
     0000
+ 1000
----------
10,000
3 0
4 years ago
Read 2 more answers
NEED SOME HELP PLZZZ 30 points!!!!!!!!!
Natali [406]

Answer: i’ll help

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
HELP ME FOR BRIANETEST
Nataliya [291]

As indicated on the number line 1/3 is the same as 2/6 so we get

Answer: 2/6 + 5/6 = 7/6

8 0
4 years ago
Which statement is logically equivalent to the following statement: “If it is raining, I will stay home from the concert”?
Gnoma [55]

Answer:

It’s If I do not stay home from the concert then it is not raining.

Step-by-step explanation:

it’s the answer that I have because in the question it’s asking what is the same but I guess opposite. Which is why I chose the first answer as my answer since if it’s not raining then they would go to the concert.

8 0
2 years ago
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