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sveta [45]
2 years ago
9

I need help ASAP!!!Please explain how you got your answer

Mathematics
1 answer:
Naddik [55]2 years ago
7 0

Answer:

See the pic below.

Step-by-step explanation:

I erased the incorrect answers and filled in the correct answers with numbers.

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A music industry researcher wants to estimate, with a 90% confidence level, the proportion of young urban people (ages 21 to 35
Maslowich

Answer:

1,539

Step-by-step explanation:

Using Simple Random Sampling in an infinite population (this is such a large population that we do not know the exact number) we have that the sample size should be the nearest integer to

\large \frac{Z^2pq}{e^2}

where

<em>Z= the z-score corresponding to the confidence level, in this case 90%, so Z=1.645 (this means that the area under the Normal N(0,1) between [-1.645,1.645] is 90%=0.9) </em>

<em>p= the proportion of young urban people (ages 21 to 35 years) who go to at least 3 concerts a year= 35% = 0.35 </em>

<em>q = 1-p = 0.65 </em>

<em>e = the error proportion = 2% = 0.02 </em>

Making the calculations

\large \frac{Z^2pq}{e^2}=\frac{(1.645)^2*0.35*0.65}{(0.02)^2}=1,539.09

So, the sample size should be 1,539 young urban people (ages 21 to 35 years)

6 0
3 years ago
(linear functions) PLEASE HELP!!! WILL GIVE BRAINLIEST
fredd [130]
There are 3 units between y int. One is at y=0 and the other is y=-3
5 0
2 years ago
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sdas [7]
I don't really know
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What are the solutions to the equation (x – 6)(x + 8) = 0?
VikaD [51]

Answer:

x=6, x=-8

Step-by-step explanation: i used the symbolab calculator online to solve this.

3 0
3 years ago
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a building was decorated with 1240 green bulbs , 1350 red bulbs and 90 yellow bulbs how many bulbs were used in all​
MrRa [10]
Answer: 2,680 bulbs were used in all.

I added all of them up so 1240 + 1350 + 90 which equals 2,680.

If you have any questions let me know, have a great day!
5 0
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