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morpeh [17]
3 years ago
15

The bumper car ride at the state fair has three red cars,four green cars,and two blue cars.Joe is first in line for the ride and

is assigned a car at random.Bill is next in line and is randomly assigned a car.What is the probability that both Joe and Bill will drive a red bumper car?Express your answer as a percent if necessary round your answer to the nearest tenth.
A. 91.7%
B. 33.3%
C. 11.1%
D. 8.3%
Mathematics
1 answer:
sp2606 [1]3 years ago
7 0
The answer is B.33.3%
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In a previous​ year, 58​% of females aged 15 and older lived alone. A sociologist tests whether this percentage is different tod
Gemiola [76]

Answer:

z=\frac{0.565 -0.58}{\sqrt{\frac{0.58(1-0.58)}{600}}}=-0.744  

Since is a bilateral test the p value would be given by:  

p_v =2*P(z  

And since the p value is higher than the significance level we have enough evidence to conclude that the true proportion is not significantly different from 0.58

Step-by-step explanation:

Information given

n=600 represent the random sample selcted

X=339 represent the number of females aged 15 and older that living alone

\hat p=\frac{339}{600}=0.565 estimated proportion of females aged 15 and older that living alone

p_o=0.58 is the value that we want to check

\alpha=0.01 represent the significance level

z would represent the statistic

p_ represent the p value

Sytem of hypothesis

We want to check if the true proportion females aged 15 and older that living alone is significantly different from 0.58.:  

Null hypothesis:p=0.58  

Alternative hypothesis:p \neq 0.58  

The statistic is given by:

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

Replacing the info given we got:

z=\frac{0.565 -0.58}{\sqrt{\frac{0.58(1-0.58)}{600}}}=-0.744  

Since is a bilateral test the p value would be given by:  

p_v =2*P(z  

And since the p value is higher than the significance level we have enough evidence to conclude that the true proportion is not significantly different from 0.58

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3. help me asap i’ll give brainliest if it’s right
mestny [16]

Answer:

B it seems like it's the most suitable answer

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Answer: 5

Step-by-step explanation: itswhere the 2 lines meet at the X

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Answer:

Prime numbes

Step-by-step explanation:

Numbers whose only factors are 1 and itself are called prime numbers.

Such numbers have only two factors.

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