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Vinvika [58]
2 years ago
9

Can you please help me?​

Mathematics
2 answers:
Ira Lisetskai [31]2 years ago
6 0

Answer:

Magic Land and Land of Make Belive

Step-by-step explanation:

they are 15 miles apart, while the other one is 11 miles.

skad [1K]2 years ago
6 0

Answer:

Land of make believe and Magic Land

Step-by-step explanation:

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A study indicates that 62% of students have have a laptop. You randomly sample 8 students. Find the probability that between 4 a
Scrat [10]

Answer:

72.69% probability that between 4 and 6 (including endpoints) have a laptop.

Step-by-step explanation:

For each student, there are only two possible outcomes. Either they have a laptop, or they do not. The probability of a student having a laptop is independent from other students. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

A study indicates that 62% of students have have a laptop.

This means that n = 0.62

You randomly sample 8 students.

This means that n = 8

Find the probability that between 4 and 6 (including endpoints) have a laptop.

P(4 \leq X \leq 6) = P(X = 4) + P(X = 5) + P(X = 6)

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 4) = C_{8,4}.(0.62)^{4}.(0.38)^{4} = 0.2157

P(X = 5) = C_{8,5}.(0.62)^{5}.(0.38)^{3} = 0.2815

P(X = 6) = C_{8,6}.(0.62)^{6}.(0.38)^{2} = 0.2297

P(4 \leq X \leq 6) = P(X = 4) + P(X = 5) + P(X = 6) = 0.2157 + 0.2815 + 0.2297 = 0.7269

72.69% probability that between 4 and 6 (including endpoints) have a laptop.

3 0
3 years ago
A pair of complex numbers who have the same real and imaginary parts, but the imaginary parts have opposite signs. Their product
mixas84 [53]

Answer:

conjugate pair

Step-by-step explanation:

7 0
3 years ago
Lauren Rob need to find a decimal equivalent to 39/50 Laura said she could write an equivalent fraction with 100 as the denomina
Lina20 [59]

Answer:

Laura and Rob are correct

Step-by-step explanation:

we have

39/50

1) Rob said he could divide the numerator by the denominator

so

using a calculator

39/50=0.78

Rob is correct

2) Laura said she could write an equivalent fraction with 100 as the denominator to converted into a decimal

so

Multiply by 2/2

(39/50)*(2/2)=78/100=0.78

Laura is correct

therefore

Laura and Rob are correct

5 0
3 years ago
What units will you use to measure an Indian ocean
Anastaziya [24]

Answer:

Kilometers most likely for any other measurement would be to small to do so otherwise.

8 0
3 years ago
Todd is attempting to predict how much money his furniture company will make based on the amount raw materials the company curre
const2013 [10]
<span>Average profit from the sale of 1 piece of furniture = 3x + 1 Average number of pieces of furniture that can be made using current supply of raw materials = 3x - 1. Therefore, Average profit of total furniture = Average profit X Average total of furniture sold = (3x + 1) X (3x - 1) = 9x^2 - 1</span>
8 0
3 years ago
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