I need help on my math

The mayor of a town has proposed a plan for the construction of a new community. A political study took a sample of 800 voters i

Hunter-Best [27]

Answer:

A political strategist wants to test the claim that the percentage of residents who favor construction is more than 30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: $p \leq 0.3$

Alternative hypothesis $p >0.3$

Step-by-step explanation:

We have the following info given from the problem:

$n= 800$ the random sample of voters selected from the town

$\hat p = 0.34$ represent the proportion of residents favored construction

$p_o = 0.30$ represent the value desired to test.

A political strategist wants to test the claim that the percentage of residents who favor construction is more than 30%, so then that represent our claim and needs to be on the alternative hypothesis.

Based on this the correct system of hypothesis are:

Null hypothesis: $p \leq 0.3$

Alternative hypothesis $p >0.3$

And in order to test this hypothesis we can use a one sample z test for a population proportion and the statistic would be given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

And with the data given we have:

$z=\frac{0.34 -0.3}{\sqrt{\frac{0.3(1-0.3)}{800}}}=2.469$

7 0

2 years ago

40 POINTS been stuck on this i'd mean alot for yall to help i'll mark brianliest

g100num [7]

Answer:

For the first blank: 8

For the second blank: I think it's 913

Step-by-step explanation:

First blank: To find the area of a square do (Length * Width) For the roof do 15 * 25 to get 375. Then divide by 100 and you get 3.75 but round to 4

That's for 1 half of the roof so do cover the whole roof you need 8.

8 0

3 years ago

Read 2 more answers

Jerry is painting a fence made of 4 wooden planks. He has 4 different colours to choose from. He randomly chooses a colour for e

kap26 [50]

1/4 because each color on it’s owned factor

4 0

3 years ago

2/7 of 9/11 in simplest form

kozerog [31]

The answer is
23/10^2

6 0

3 years ago

Read 2 more answers

(b) Give an estimate to the nearest hundreds for . Explain how you determined your estimate and tell what means in context of th

Nitella [24]

Hi! hope this helped B(d) is a function of the number of days d since she opened the account.B(0) is the balance at day=0 now, since the length of segment OA is half of the length of segment OB, and the length of segment OB is proportional to the max balance, namely $400, then the segment OA is proportional to 400/2=200

5 0

2 years ago