The temperature dropped 3 degrees per hour for a total decrease of 51 degrees for how many hours did the temperature drop

Suppose that you are interested in determining the average height of a person in a large city. You begin by collecting the heigh

monitta

The standard error of the estimate of average height in the city is 0.25.

Given average height 64 inches, sample mean and sample standard deviation of 4 inches.

We have to determine the standard error of the estimate of the average height in the city.

Standard error is the error which is predicted before research to happen in research. It is calculated by dividing the standard deviation of the sample by the square root of the sample size.

n=256

μ=mean

s = sample standard deviation

Standard error=s/ $\sqrt{n}$

=4/ $\sqrt{256}$

=4/16

=0.25

Hence the standard error of the estimate of the average height is 0.25.

Learn more about standard error at brainly.com/question/1191244

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5 0

2 years ago

Explain why y +1 = 1.2(x + 2) and y- 5 = 1.2(x – 3) represent the same line, despite having

Shtirlitz [24]

Answer:

They have the same slope

Step-by-step explanation:

The standard equation of a line in point-slope form is expressed as;

y-y0 = m(x-x0)

We can see that both equations given are written in this form with a slope of 1.2. For two lines to be equal, they must have the same slope no matter the point on the lines. Hence the two equations are equal since they have different slopes.

5 0

2 years ago

Which of the following is most likely the next step in the series?

zysi [14]

Answer:

it's D

Step-by-step explanation:

3 0

3 years ago

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Using the number line, determine which expressions have a value that is greater than –8. Select Yes or No for each expression. l

Nimfa-mama [501]

<h3>Answer:</h3>

yes

-6-(-6)
-4-(-7)

no

all others

<h3>Step-by-step explanation:</h3>

Doing what the directions say is generally a good idea.

Adding a number moves to the right; subtracting a number moves to the left. Subtracting a negative number is the same as adding its opposite.

The arrowhead end of the line in the figure is the end result. Two of them end up to the right of -8, that is, greater than -8.

8 0

3 years ago

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The function f(x)=50⋅0.8x models the number of ants in Jonathan's ant farm after it is stricken by a deadly ant disease, where x

alina1380 [7]

Answer:

Step-by-step explanation:

In the exponential growth/decay function

$y=a(b)^x$ , in our situation,

y is the number of ants remaining in the colony after the growth or decay,

a is the initial number of ants in the colony, and

b is the growth/decay rate. Rule: if b is greater than 1, the function is growth; if b is greater than 0 but less than 1, the function is decay.

Our equation looks like this (it's given):

$y=50(.8)^x$

a = 50, which is the initial number of ants in the colony.

b = .8 (which actually means that then number of ants is declining by 20% each week). Since .8 is a fraction of 1, this is decay.

So far, we know that 1 and 4 are true. Let's look at 5. We have to do some solving to find out if it's true or not. If the number of ants after x = 2 weeks is 32, then we plug in 2 for x and see if the y we get as the answer is 32:

$y=50(.8)^2$ and

y = 50(.64) so

y = 32

5 is true as well. Let's test 6 by replacing x with 8 and seeing if y = 10:

$y=50(.8)^8$ and

y = 50(.16777216) so

y = 8.388

6 is not true.

1, 4, 5 are true

8 0

3 years ago

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