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2 years ago

Can anybody help me on this question?

Mathematics

2 answers:

Marina86 [1]2 years ago

8 0

The answer is 60 . ........

Tresset [83]2 years ago

4 0

Answer:

Step-by-step explanation:

i did the math yeah

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We have n = 100 many random variables xi 's, where the xi 's are independent and identically distributed bernoulli random variab

Alex777 [14]

Recall that for a random variable $X$ following a Bernoulli distribution $\mathrm{Ber}(p)$ , we have the moment-generating function (MGF)

$M_X(t)=(1-p+pe^t)$

and also recall that the MGF of a sum of i.i.d. random variables is the product of the MGFs of each distribution:

$M_{X_1+\cdots+X_n}(t)=M_{X_1}(t)\times\cdots\times M_{X_n}(t)$

So for a sum of Bernoulli-distributed i.i.d. random variables $X_i$ , we have

$M_{\sum\limits_{i=1}^nX_i}(t)=\displaystyle\prod_{i=1}^n(1-p+pe^t)=(1-p+pe^t)^n$

which is the MGF of the binomial distribution $\mathcal B(n,p)$ . (Indeed, the Bernoulli distribution is identical to the binomial distribution when $n=1$ .)

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2 years ago

A map is drawn to scale so that 1.2 cm represents 30 miles.How many miles does 1.4 cm represent?

777dan777 [17]

40 miles hope this help[s

8 0

3 years ago

The coordinate plane shows the floor plan for a swimming pool. What is the area of the pool’s border?"

emmasim [6.3K]

<span>A = Area
L= Length = 15
W + widith = 10
A = 150
The pool area is L = 10
w= 5
A= 50
So the area of the perimeter = 100 square meters</span>

5 0

3 years ago

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{x|x€Z^x<8}<br> Please someone help me what should be the elements in the set

joja [24]

What how is this a problem and how are you in middle school

5 0

3 years ago

A baseball player has a batting average of 0.26. What is the probability that he has exactly 6 hits in his next 7 at bats

LenKa [72]

Answer:

0.0016

Step-by-step explanation:

Batting average, p = 0.26

n = 7

x = 6

With p = 0.26 as success rate

1-p is equal to failure rate which is = 0.74

We have to solve this by using the binomial distribution formula.

P(X= x)

= nCx * p^x * (1-p)^(n-x)

P(X = 6)

=7C6 × 0.26^6 ×(1-0.26)^(7-6)

= 7 × 0.0003089 × 0..74¹

= 0.0016

So probability that he has exactly 6 hits in his next 7 bats is equal to 0.0016.

8 0

3 years ago