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2 years ago

Can you just say which graph it is

Mathematics

2 answers:

defon2 years ago

7 0

There is no graph posted, please post the graph

8_murik_8 [283]2 years ago

4 0

No graph to tell if you post it maybe it'll help to choose which one

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Suppose that 30% of all students who have to buy a text for a particular course want a new copy (the successes!), whereas the ot

ValentinkaMS [17]

Answer:

The probability that all 15 will get the type of book they want from current stock is 0.4838.

Step-by-step explanation:

Denote the random variable X as the number of students who want to buy new copy.

The probability of a student wanting to buy a new copy is, P (X) = p = 0.30.

A random sample of n = 15 students is selected.

The random variable X follows a Binomial distribution.

The probability function of a Binomial distribution is:

$P(X=x)={n\choose x}p^{x}(1-p)^{n-x};\ x=0, 1, 2, 3,...$

It is provided that the bookstore has 10 new copies and 10 used copies in stock.

All the 15 students get their desired copy, then this can happen if at most 10 want to buy new copy and at least 5 wants to buy used copy.

Compute the probability of (5 ≤ X ≤ 10) as follows:

P (5 ≤ X ≤ 10) = P (X = 5) + P (X = 6) + P (X = 7) + P (X = 8) + P (X = 9) + P (X = 10)

$={15\choose 5}(0.30)^{5}(1-0.30)^{15-5}+{15\choose 6}(0.30)^{6}(1-0.30)^{15-6}\\+{15\choose 7}(0.30)^{7}(1-0.30)^{15-7}+{15\choose 8}(0.30)^{8}(1-0.30)^{15-8}\\+{15\choose 9}(0.30)^{9}(1-0.30)^{15-9}+{15\choose 10}(0.30)^{10}(1-0.30)^{15-10}\\=0.2061+0.1472+0.0811+0.0348+0.0116+0.0030\\=0.4838$

Thus, the probability that all 15 will get the type of book they want from current stock is 0.4838.

6 0

2 years ago

Graph the function. g(x)=1/3(x-6)^2+1

sladkih [1.3K]

Step-by-step explanation:

g(x)=1/3(x-6)^2+1

The graph of this function is in the attachment

3 0

2 years ago

The length of a rectangle is 3 times longer than it’s width. If the area of the rectangle is 24 square inches, then what is the

faust18 [17]

3w)w = 24in^2 (Tossing out the negative solution for unit measure)

3w^2 = 24

w^2 = 8

w = 2√2in and L = 6√2in L+=+3w

P = 2L + 2w = 16√2in

7 0

2 years ago

Shade an equivalent fraction

Rainbow [258]

Answer:

sorry I don’t have a notebook on me right now , hope I could help

Step-by-step explanation:

3 0

2 years ago

PLEASE HELP ME!!!!! GIVING (17 POINTS)

bija089 [108]

Answer:

61.) A, B, A

62.) 120 minutes

Step-by-step explanation:

61.) 48 is a multiple of 6. A multiple is a number which can be fully divided into another number (divded without remainder). Therefore, 48 is a multiple of 6 because 6 * 8 = 48 meaning that 48/6 would equal 8. Because there is no remainder, Carly can put the beads into 6 equal groups.

62.) This is a simple conversion problem. Since they are asking the amount of minutes, you need to convert 2 hours to minutes. You do not need to calculate it or set up a formula because there are 60 minutes in one hour, therore, in 2 hours there are 120 minutes (60 minutes + 60 minutes).

4 0

1 year ago