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3 years ago

8

marco has a rope that is 16 feet long. He ties his rope to liam and pams with a square knot that uses 1 1/8 feet of rope. How lo

ng are the three ropes tied together? Write and solve an equation

1 answer:

soldier1979 [14.2K]3 years ago

6 0

answer: 16(1 1/8x3)=y y=54

Step-by-step explanation:

1 1/8x3= 3 3/8

3 3/8x16=54

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2 years ago

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

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2 years ago

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Use “ Math- way”

Step-by-step explanation:

It’s a web browser made for this stuff, you‘re welcome

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