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ki77a [65]
2 years ago
14

What makes apparent magnitude different from absolute brightness? Give an example in your response.

Mathematics
1 answer:
Lapatulllka [165]2 years ago
8 0
Apparent magnitude isn’t the actual brightness, it’s what the brightness appears to be from earth, absolute brightness is the actual brightness an example is our sun it appears bright on earth but in space it is so much more brighter
You might be interested in
A yearbook company was investigating whether there is a significant difference between two states in the percents of high school
vovikov84 [41]

Answer:

Null hypothesis: p_1 = p_2

Alternative hypothesis: p_1 \neq p_2

So we need to conduct a:

D. A two-sample z-test for a difference in population proportions

Because the idea is to check if the population proportions in the states are similar or not.

Step-by-step explanation:

For this case they are trying two proof if there is a significant difference between two states in the percents of high school students who order yearbooks, and we chan check this with the difference of proportions.

Lets say that p_1,p_2 are the two proportions of interest and we want to check the following hypothesis:

We have the following info given:

\hat p_1 = \frac{70}{150}= 0.47 proportion of students that had ordered a yearbook from one state

\hat p_2= \frac{65}{100}= 0.65 proportion of students that had ordered a yearbook from another state

n_1 = 150 sample size from one state

n_2=100 sample size from another state

Null hypothesis: p_1 = p_2

Alternative hypothesis: p_1 \neq p_2

So we need to conduct a:

D. A two-sample z-test for a difference in population proportions

Because the idea is to check if the population proportions in the states are similar or not.

5 0
3 years ago
A principal wants to find out how many hours per week the students in the school spend
malfutka [58]
I think B (Every fifth student from each grade)

A only talks about female students, C talks about students on a sports team which would be biased since the students on the sports team probably get more exercise, and d would be ok but not the best since some last names are more common and others you would get only a very small sample size.
3 0
2 years ago
What is the area of this figure? 4 cm 5cm 5cm Enter your answer in the box. cm? ​
Kruka [31]
What’s the shape of it?
If it’s a rectangle 20
Bot something with more than 4 sides 100cm
6 0
3 years ago
WILL MARK BRAINLY. 20pts
shusha [124]

initial value=deposit initil=$50

rate o change is amount deposeted per unit time or $25 per week

if her paycheck doesn't change and how often she gets per paycheck doesn't change, then the rte of change over time shouldn't change values

6 0
3 years ago
The length of a pencil is measured with two rulers. Report the length of the pencil from each ruler with the proper number of di
Roman55 [17]

Answer

Length measured using Ruler A= 1.17 dm

Length measured using Ruler B=1.18 dm

Step by Step Explanation:

I have added the missing photograph which shows the length of pencil being measured with two rulers.

Ruler A has marking separated by 1 dm

Ruler B has marking separated by 0.1 dm

Length measured using Ruler A= 1.17 dm

(As we can see I have added the middle markers, we can see the tip of pencil is somewhere between 1 and 1.25, it is more than 1.125 but lesser than 1.25, it is somewhere around 1.2 and 1.125 dm, approximately equal to one half of 1.25 which is 1.125 with addition of one of the three halves of half of 1.125 which is 1.125+0.045 dm hence 1.17dm)

Length measured using Ruler B=1.18 dm

(we can see the tip of pencil is just before 1.2 dm, it is clear that the value is precisely 1.18 and not 1.19 dm)

<u><em>Tip:Always measure one more decimal than given by the ruler when unsure about the exact value</em></u>

6 0
3 years ago
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