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3 years ago

How much will her mother donate

Mathematics

1 answer:

nataly862011 [7]3 years ago

8 0

I think u forgot to put the whole question

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Consider the population of four juvenile condors. Their weights in pounds are : 4, 5, 7, 12 (a) Let x be the weight of a juvenil

creativ13 [48]

Answer:

a) 4, 5, 7, 12

b) 7

c) 4.5, 6.5, 8, 6, 8.5, 9.5

d) 7.167

Step-by-step explanation:

We are given the following in the question:

4, 5, 7, 12

a) unique values for x

4, 5, 7, 12

b) mean of the population

$Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}$

$\mu =\displaystyle\frac{28}{4} = 7$

c) sampling distribution for samples of size 2

Sample size, n = 2

Possible samples of size 2 are (4,5),(4,7),(4,12),(5,7),(5,12),(7,12)

Sample means are:

$\bar{x_1} = \dfrac{4+5}{2} = 4.5\\\\\bar{x_2} = \dfrac{4+7}{2} = 6.5\\\\\bar{x_3} = \dfrac{4+12}{2} = 8\\\\\bar{x_4} = \dfrac{5+7}{2} = 6\\\\\bar{x_5} = \dfrac{5+12}{2} = 8.5\\\\\bar{x_6} = \dfrac{7+12}{2} = 9.5$

Thus, the list is 4.5, 6.5, 8, 6, 8.5, 9.5

d) mean of the sampling distribution

$\bar{x} = \dfrac{4.5 + 6.5 + 8+ 6 + 8.5+ 9.5}{6} = \dfrac{43}{6} = 7.167$

6 0

3 years ago

Grace made tables of values to solve a system of equations. First, she found that the x-value of the solution was between 0 and

liraira [26]

Answer: C

Step-by-step explanation:

3 0

3 years ago

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1. y = x + 2<br> y=-3x<br> What’s is the answer?

DiKsa [7]

Answer:

x=(-1/2) y=(3/2)

Step-by-step explanation:

y=x+2 Given

-3x=x+2 Substitute (-3x) for y

-2-3x=x Subtract 2 from both sides

-2=4x Add 3x to both sides

(-1/2)=x Divide both sides by 4.

y=x+2 Given

y=(-1/2)+2 Substitute (-1/2) for x

y=1 1/2

y=3/2

3 0

3 years ago

The length of a rectangle is 3 1/6 cm longer than the width. The perimeter of the rectangle is 15 1/3 cm. What are the width and

Nikitich [7]

Answer:

The width of rectangle is cm and length is cm.

Step-by-step explanation:

Let,

Width of rectangle = w

Length of rectangle =

Perimeter of rectangle = cm

Perimeter = 2(Length + Width)

Dividing both sides by 4

Width of rectangle =

The width of rectangle is cm and length is cm.

Keywords: rectangle, perimeter

6 0

3 years ago

Which set of ordered pairs does not represent a function?

Lunna [17]

Answer:

Step-by-step explanation:

(0, 0) (0, 1) (1, 2) (1, 3)

For it to be a function each x value should have one y value.

There are two 0's for x and two 1's for x. This is how you can tell it's not a function.

7 0

3 years ago

Read 2 more answers