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3 years ago

Hi I need help with math

Mathematics

1 answer:

ddd [48]3 years ago

6 0

Answer:

sure but where is the math problem or do u need a tuter

Step-by-step explanation:

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A consumer advocacy group wants to determine whether there is a difference between the proportions of the two leading automobile

podryga [215]

Answer:

The answer is "0.3206".

Step-by-step explanation:

$H_0: p_1 = p_2\\\\H_a: p_1 \neq p_2\\\\\hat{p_1} = \frac{X_1}{N_1} = \frac{53}{400} = 0.1325\\\\\hat{p_1}= \frac{X_2}{N_2} = \frac{78}{500}= 0.156\\\\\hat{p} = \frac{(X_1 + X_2)}{(N_1 + N_2)} = \frac{(53+78)}{(400+500)} = 0.1456$

Testing statistic:

$z = \frac{(\hat{p_1}- \hat{p_2})}{\sqrt{(\hat{p} \times (1-\hat{p}) \times (\frac{1}{N_1} + \frac{1}{N_2}))}}$

$=\frac{(0.1325-0.156)}{\sqrt{(0.1456\times (1-0.1456)\times (\frac{1}{400} + \frac{1}{500}))}}\\\\ = -0.99$

Calculating the P-value Approach

$\text{P-value}= 0.3206$

7 0

2 years ago

Plεαse solve thanks!!!!

Gwar [14]

Answer:

1/12

Step-by-step explanation:

1/6x

1/2

1/12

its lined up just in case

4 0

3 years ago

Choose the slope-intercept form of y + 3 = 4(x - 5).

Scrat [10]

Answer: y=4x-23

Step-by-step explanation:

First multiply the 4 on the right side to make it y+3=4x-20. Then subtract 3 on both sides to get y=4x-23

5 0

3 years ago

Read 2 more answers

What is the common ratio between successive terms in the sequence?

ruslelena [56]

Answer:

1/3

Step-by-step explanation:

the formula of common ratio is given as

$r = \frac{a2}{a1}$

a1= 27 ,a2=9

r= 9/27

r= 1/3

3 0

2 years ago

I need help with this

Softa [21]

Nothing can be done with this question!

8 0

3 years ago

Hi I need help with math ​

Hi I need help with math