3 years ago

What is the multiplicative rate of the exponential function shown on the graph

1 answer:

8 0

Can u post the graph to the questions

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Lelu [443]

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A larger percentage of people in New York prefer coffee

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dybincka [34]

Y = 2/3x+9, or
2x-3y=-27

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3 years ago

Sedbober [7]

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3 years ago

vaieri [72.5K]

Bottom = 2x5 = 10ft
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3 years ago

Marat540 [252]

Answer:

a) P(X≥143)=0

b) This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).

Step-by-step explanation:

If we use the normal approximation to the binomial distribution we have the following parameters (mean and standard deviation):

$\mu=np=0.68*206=140.1\\\\ \sigma=\sqrt{np(1-p)}=\sqrt{206*0.68*0.32}=\sqrt{44.8256}=6.7$

Then, we can calculate the probability of X being equal or more than 143 using the z-score:

$z=\dfrac{X-\mu}{\sigma/\sqrt{n}}=\dfrac{143-140.1}{6.7/\sqrt{206}}=\dfrac{2.9}{0.4668}=6.2124\\\\\\P(x\geq143)=P(z>6.2124)=0$

This contradicts the study as getting a sample with this proportion is almost impossible (if the proportion of 68% is true).

6 0

3 years ago