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fiasKO [112]
3 years ago
13

A group of friends were working on a student film that had a budget of $500. They used $25 of their budget on props. What percen

tage of their total budget did they spend on props?
Mathematics
1 answer:
Dmitriy789 [7]3 years ago
5 0

Answer:

1/8

Step-by-step explanation:

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NEED HELP ASAP!!!!!!!!!!!!!!
-Dominant- [34]

Answer: B

Step-by-step explanation:

4 0
2 years ago
A recent Gallup poll found that 36% of U.S. teens aged from 13 to 17 years old have a computer with [(6)] Internet access in the
In-s [12.5K]

Answer:

Step-by-step explanation:

a) The population parameter is the population proportion.

b) Confidence interval is written as

Sample proportion ± margin of error

Margin of error = z × √pq/n

Where

z represents the z score corresponding to the confidence level

p = sample proportion. It also means probability of success

q = probability of failure

q = 1 - p

p = x/n

Where

n represents the number of samples

x represents the number of success

From the information given,

n = 1028

p = 36/100 = 0.36

q = 1 - 0.36 = 0.64

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.99 = 0.1

α/2 = 0.01/2 = 0.005

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.05 = 0.995

The z score corresponding to the area on the z table is 2.58. Thus, confidence level of 99% is 2.58

Therefore, the 99% confidence interval is

0.36 ± 2.58 × √(0.36)(0.64)/1028

The lower limit of the confidence interval is

0.36 - 0.039 = 0.321

The upper limit of the confidence interval is

0.36 + 0.039 = 0.399

Therefore, with 99% confidence interval, the proportion of U.S. teens aged from 13 to 17 years old that have a computer with Internet access in their rooms is between 0.321 and 0.399

c) for a margin of error of 1%, that is 1/100 = 0.01, then

0.01 = 2.58 × √(0.36)(0.64)/n

0.01/2.58 = √0.2304/n

0.00387596899 = √0.2304/n

Square both sides

0.00001502314 = 0.2304/n

n = 0.2304/0.00001502314

n = 15336

5 0
3 years ago
Write the number shown in two different ways. standard form and expanded form.<br><br><br> 79,031
olga nikolaevna [1]
Standard Form: 79,031

Expanded Form: 70,000 + 9,000 + 30 + 1
6 0
3 years ago
Read 2 more answers
Proportion : <br> X=<br> please help me :(
KIM [24]
X=7

You divide 14 by 2 to find the proportion (7) then multiply it by 1 to get the base length of the large triangle since they’re congruent.
4 0
2 years ago
A parking lot has 63 empty space. If the ratio of empty space to taken spaces is 7:4, how many spaces are there total
sweet [91]

First, find how many actual empty spaces there are to the ratio of empty spaces. (In other words, divide 63 by 7)

63 ÷ 7 = 9

Now that we know for that there are 9 sets of 7 in 63, multiply 4 by 9 to find the amount of taken parking spaces.

4 × 9 = 36

The unsimplified ratio of empty spaces to take spaces is 63:36. Add these two numbers together to find the total number of spaces.

63 + 36 = 99

<h2>Answer:</h2>

<u>There are </u><u>99 </u><u>total parking spaces.</u>

I hope this helps :)

5 0
3 years ago
Read 2 more answers
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