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grandymaker [24]

3 years ago

13

a random sample of size 100 is taken from a population described by the proportion P equals 0.60 using the appropriate normal tr

ansformation to calculate the probability that the sample proportion is less than 0.55

1 answer:

Nataliya [291]3 years ago

5 0

Answer:

767

Step-by-step explanation:

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We have 50 video gamers who share information about their favorite games. 20 people say that Borderlands II is their favorite ga

stealth61 [152]

Answer:

2 people

Step-by-step explanation:

Total number of people (n) = 50

Borderlands II (B) = 20

Fortnite (F) = 33

Minecraft (M) = 19

Borderlands and Fortnite (B&F) = 15

Borderlands and Minecraft (B&M)= 10

All games (B&M&F) = 5

The number of people that claimed more than one game as their favorite (X) is given by:

$X=M+B+F-n\\X=19+20+33-50\\X=22\ people$

Those people can be divided in B&F only, B&M only, M&F only and B&M&F:

$X=(B\&M-B\&M\&F)+(B\&F-B\&M\&F)+(M\&F-B\&M\&F)+B\&M\&F\\X=B\&M+B\&F+M\&F-2*B\&M\&F\\22=10+15+M\&F-2*5\\M\&F=7\ people$

7 people claimed that Minecraft and Fortnite were their favorites however, 5 of those people claimed all of the games as their favorite. Therefore, only 2 people declared Minecraft and Fortnite (exclusively) as their favorites.

7 0

3 years ago

Read 2 more answers

Example: Find the smallest positive integer n so that 8!.n is a<br>perfect square.

Goryan [66]

Answer:

vkdjdduruyeyetjfdywreytdjgkjfkjgkhkhv;

Step-by-step explanation:

5 0

3 years ago

3 and 1/3 +[-2 and 1/4]+1 and 5/6

IceJOKER [234]

Answer: Hi, for these type of questions I can help you! I

Step-by-step explanation: hi, my answers are correct but wont always give you a 100%. for any questions contact me and my legal team!

7 0

3 years ago

The length of a rectangle is five times it’s with if the perimeter of the rectangle is 84 m find its length and width

sattari [20]

L = 2.049 w = 4.099 picture explains why

6 0

3 years ago

Consider the function f(x) = √5x + 15 for the domain [-3, ∞).Find f-¹(x), where f-1 is the inverse of f.Also state the domain of

Ymorist [56]

Answer: We have to find the inverse function of the following:

$f(x)=\sqrt{5x+15}\rightarrow[-3,\infty)\Rightarrow(1)$

The Inverse of the (1) is as follows:

$\begin{gathered} f(x)=y=\sqrt{5x+15} \\ \\ \text{ Switch: }x\text{ and }y\text{ and solve for }y(x)\text{ } \\ \\ \\ y=\sqrt{5x+15}\rightarrow x=\sqrt{5y+15} \\ \\ \\ x^2=5y+15 \\ \\ \\ x^2-15=5y \\ \\ \\ y=\frac{x^2}{5}-\frac{15}{5} \\ \\ \\ \\ y=f^{-1}(x)=\frac{x^2}{5}-3 \\ \\ \\ f^{-1}(x)=\frac{x^{2}}{5}-3 \end{gathered}$

The domain of the inverse function is:

$x\in(-\infty,+\infty)$

3 0

1 year ago