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Dafna11 [192]
3 years ago
10

20. –3 |z| + 2(a + y) what's the answer? z=-4.2 a=-2 y=3​

Mathematics
1 answer:
NNADVOKAT [17]3 years ago
6 0

Answer:

-10.6

Step-by-step explanation:

-3|z| + 2(a + y) =

= -3|-4.2| + 2(-2 + 3)

= -3(4.2) + 2(1)

= -12.6 + 2

= -10.6

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Crank

Answer:

x^2+5x+13=0

Step-by-step explanation:

x upper 2 and 5x

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Find the indicated real nth root(s) of a. <br><br> n=2, a=100
rosijanka [135]
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A given binomial experiment has n=100 trials and p=1/3. Is it more likely to get x=20 successes or x=45 successes. Why?
soldi70 [24.7K]

Answer:

The P(x=45) is more that the P(x=20). Therefore x=45 successes is more likely to get.

Step-by-step explanation:

Given information: n=100 and p=1/3.

According to the binomial distribution, the probability of getting r success in n trials is

P(x=r)=^nC_rp^rq^{n-r}

where, n is total trials, p is probability of success and q is probability of failure.

Total trials, n = 100

Probability of success, p = \frac{1}{3}

Probability of failure, q = 1-\frac{1}{3}=\frac{2}{3}

The probability of 20 successes is

P(x=20)=^{100}C_{20}\times (\frac{1}{3})^{20}\times (\frac{2}{3})^{100-20}

P(x=20)=\frac{100!}{20!(100-20)!}\times (\frac{1}{3})^{20}\times (\frac{2}{3})^{80}\approx 0.001257

The probability of 45 successes is

P(x=45)=^{100}C_{45}\times (\frac{1}{3})^{45}\times (\frac{2}{3})^{100-45}

P(x=45)=\frac{100!}{45!(100-45)!}\times (\frac{1}{3})^{45}\times (\frac{2}{3})^{55}\approx 0.004296

The P(x=45) is more that the P(x=20). Therefore x=45 successes is more likely to get.

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4 years ago
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