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bekas [8.4K]
3 years ago
5

Helpp quick last question!! ​

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0
A yeah i’m pretty sureeee
You might be interested in
Legalize Marijuana, Part II. As discussed in Exercise 6.12, the 2010 General Social Survey reported a sample where about 48% of
kvv77 [185]

Answer:

Around 2397 Americans must be surveyed to get a margin of error of 2%.

Step-by-step explanation:

We are given the following in the question:

Proportion of US residents who thinks marijuana should be made legal = 48%

\hat{p} = 0.48

We have to construct a 95% confidence interval.

Margin of error = 2% = 0.02

Formula for margin of error =

z_{stat}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get,

0.02 = 1.96\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\\\\0.02 = 1.96\times \sqrt{\dfrac{0.48(1-0.48)}{n}}\\\\\sqrt{n} = 1.96\times \dfrac{\sqrt{0.48(1-0.48)}}{0.02}\\\\\sqrt{n}=48.96\\n = 2397.0816\approx 2397

Thus, around 2397 Americans must be surveyed to get a margin of error of 2%.

8 0
3 years ago
PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEE HELP
algol [13]
It might be A but I'm not 100% sure inequalities was my worst thing I learned in algebra 2<span />
6 0
3 years ago
dave has 10 more marbles than Emma. Emma has m number of marbles. Write a variable expression for the number of marbles that Dav
a_sh-v [17]
Emma's marble = m
So, Dave has = m + 10

So, your final answer is m + 10

Hope this helps!
8 0
3 years ago
Read 2 more answers
11. Monthly sales revenue, S (in $), and monthly advertising expenditure, A (in $), are modelled by the linear relation, S = 900
Elenna [48]

We are to answer the questions given the sales and advertisement function

The answers are given below

Given:

S = 9000 + 12A

Where,

S = Monthly sales revenue

A = monthly advertising expenditure

a. If the firm does not spend on advertisement

S = 9000 + 12A

Where,

A = 0

S = 9000 + 12A

S = 9000 + 12(0)

S = $9000

b. If the firm spends $800 on advertising one month

S = 9000 + 12A

= 9000 + 12(800)

= 9000 + 9600

= 18,600

S = $18,600

c. S = 9000 + 12A

When

S = $15,000

15,000 = 9000 + 12A

15000 - 9000 = 12A

6000 = 12A

A = 6000/12

= 500

A = $500

d. If the firm increases monthly expenditure on advertising by $1

If A increases to $501

S = 9000 + 12A

= 9000 + 12(501)

= 9000 + 6,012

= 15,012

S increases to $15,012

Read more:

brainly.com/question/1700984

6 0
3 years ago
Steve gets paid $50 a week plus $5 for each items he sells.he wants to know how many items he needs to sell, X, to make at least
lubasha [3.4K]

Answer:

The answer is...

Step-by-step explanation:

220 - 50 is 170. So know you know how much money he wants plus to his salary. 170/5 is 34.

<em>x=34</em>

3 0
3 years ago
Read 2 more answers
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