It went from 54 meters above the surface to 9 meters below the surface...
54 to the surface (0) = 54....from 0 to -9 = 9....so it fell (54 + 9) = 63 meters.

so if it fell 63 meters in 35 seconds, then it fell (63/35) = 1.8 meters per second <===

5 0

4 years ago

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The mayor of a town has proposed a plan for the construction of an adjoining community. A political study took a sample of 900 v

Aleks04 [339]

Answer:

P-value = 0.0367

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that the percentage of residents who favor construction is significantly over 42%.

Then, the null and alternative hypothesis are:

$H_0: \pi=0.42\\\\H_a:\pi>0.42$

The sample has a size n=900.

The sample proportion is p=0.45.

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.42*0.58}{900}}\\\\\\ \sigma_p=\sqrt{0.000271}=0.016$

Then, we can calculate the z-statistic as:

$z=\dfrac{p-\pi-0.5/n}{\sigma_p}=\dfrac{0.45-0.42-0.5/900}{0.016}=\dfrac{0.029}{0.016}=1.79$

This test is a right-tailed test, so the P-value for this test is calculated as:

$\text{P-value}=P(z>1.79)=0.0367$

4 0

3 years ago

Please help me with this question asap

Veronika [31]

Answer:

it could be y = 10 or y = 9 then X

Step-by-step explanation:

if im wrong then im sorry

3 0

3 years ago