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geniusboy [140]
3 years ago
12

One condition for performing a hypothesis test is that the observations are independent. Marta is going to take a sample from a

population of 600 students. How many students will Marta have to sample without replacement to treat the observations as independent?
Mathematics
1 answer:
AleksandrR [38]3 years ago
6 0

Answer:

The correct answer to the following question will be "60 students".

Step-by-step explanation:

Marta will be taking a sampling frame from some kind of 600 student group.

Mean,

N = 60  

Although the sampling method could perhaps consist of the following components 10% of the population,

⇒  600\times 10 \ percent

⇒  60

In order to view these findings as autonomous, 60 students would then have to analyze Marta lacking replacements.

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A triangle has vertices on a coordinate grid at P(-10,1)P(−10,1), Q(-10,-7)Q(−10,−7), and R(-5,-7).R(−5,−7). What is the length,
lys-0071 [83]

Answer:

Step-by-step explanation:

Given the following coordinates of a triangle

P(-10,1)

Q(-10,-7)

R(-5,-7)

Required

Length of PQ

PQ = √(y2-y1)²+(x2-x1)²

From the coordinate;

x1 = -10, y1 = 1, x2 = -10 y2 = -7

Substitute

PQ = √(-7-1)²+(-10-(-10))²

PQ = √(-8)²+0²

PQ = √64

PQ = 8units

Hence the length of PQ in units is 8units

3 0
3 years ago
The median size of a new single family home grew from 1727 ft^2 in 1996 to 2129 ft^2 in 2009. What is the percent of increase?
pishuonlain [190]
(2129-1727)/1727=0.232
The percentage of increase is 23%.
6 0
3 years ago
It's a multiple choice question
andriy [413]
To make sure we don't have negatives under the square root, we specify that x \ge 0 (x is greater than or equal to 0). We'll use this fact later on

--------------------------------------------

Start with the given inequality \sqrt{x} \le 7 and square both sides to get x \le 49. Couple this with the fact that x \ge 0 means we have this compound inequality 0 \le x \le 49

What does this mean? It means that we can pick any value from 0 to 49 (including both endpoints) and it will be a solution to the inequality. This applies to the values 49, 48 and 44

Answers: Choice C, Choice D, Choice E
5 0
4 years ago
Read 2 more answers
A garden has the shape of a right triangle with one leg 4 meters longer than the other. the hypotenuse is 4 meters less than twi
zubka84 [21]
4m. 

You can get this answer by setting the legs equal to x and x+4 and the hypotenuse as 2x-4. Then use the Pythagorean Theorem and the quadratic equation to solve. 
7 0
3 years ago
All I know it’s not D and i’m super confused and I just want to go to bed
Harlamova29_29 [7]

Answer:

C.

Step-by-step explanation:

Before graphing this equation we first need to isolate y on one side like so...

y + 2 = 3(x+1)   ... distribute the 3 to both values inside the parenthesis

y + 2 = 3x + 3   ... subtract 2 on both sides

y = 3x + 1

Now that we have the y variable isolated we see that the slope of the function is 3, meaning that for every 1 unit right the line needs to move 3 units up. We also have the value where the line needs to cross the y-axis and that is 1. Using this information we see that the correct graph is C.

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3 years ago
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