4 years ago

CAN YALL HELP ME PLEASE

Mathematics

1 answer:

goldenfox [79]4 years ago

4 0

There is a total of 23 students, the probability is 17/23=0.739

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I need help please.

exis [7]

Pretty sure the answer is 20
Hope this helps :)

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3 years ago

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What is -3/4(12-16d)

wolverine [178]

Answer:

(-3/4)(12)+(-3/4)(-16d)

-9+12d

12d-9

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3 years ago

Fill in the blanks below to make a true statement. In a binomial experiment with n trials and probability of success p, if np (1

Sergeu [11.5K]

Answer:

$\mu_{x}=np$

$\sigma^2_{X}=np(1-p)$

Step-by-step explanation:

∵ When x is a random variable having distribution B(n, p), then for sufficiently large value of n, the following random variable has a standard normal distribution,

$\frac{x-\mu}{\sigma}\sim N(0,1)$

Where,

$\mu=np$

$\sigma^2=np(1-p)$

Here the variable X has a binomial distribution,

Such that, np (1 - p) ≥ 10 ⇒ n is sufficiently large.

Where, n is the total numbers of trials, p is success in each trials,

So, the mean of variable X is,

$\mu_{X} = np$

And, variance of variable X is,

$\sigma^2{X}=np(1-p)$

3 0

3 years ago

You write down the temperatures at different times on one of the match days. Time Temperature Midnight -6°C 4 am -8°C 8 am -4°C

fenix001 [56]

The highest is 7 degrees and lowest is -8 so subtract and you get a difference of 15 degrees

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4 years ago

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Find the missing angle measures?

PIT_PIT [208]

Answer:

x)45

y)45

z)135

Step-by-step explanation:

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3 years ago