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At Jefferson High School, there are 250 students who drive to school and 375students who ride the bus to school. The number of s

maw [93]

Answer:

Your answer is.....

The number of students who drive is 66.66% of them who ride

Mark it as brainlist answer . follow me for more answer.

Step-by-step explanation:

3 0

2 years ago

The sample survey showed that 67% of internet users said the internet has generally strengthened their relationship with family

SpyIntel [72]

Answer:

The 95% confidence interval for the proportion of respondents who say the internet has strengthened their relationship with family and friends is $(0.67 - 1.96\sqrt{\frac{0.67*0.33}{n}}, 0.67 + 1.96\sqrt{\frac{0.67*0.33}{n}})$ , in which n is the size of the sample.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the z-score that has a p-value of $1 - \frac{\alpha}{2}$ .

67% of internet users said the internet has generally strengthened their relationship with family and friends.

This means that $\pi = 0.67$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a p-value of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.67 - 1.96\sqrt{\frac{0.67*0.33}{n}}$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.67 + 1.96\sqrt{\frac{0.67*0.33}{n}}$

The 95% confidence interval for the proportion of respondents who say the internet has strengthened their relationship with family and friends is $(0.67 - 1.96\sqrt{\frac{0.67*0.33}{n}}, 0.67 + 1.96\sqrt{\frac{0.67*0.33}{n}})$ , in which n is the size of the sample.

3 0

3 years ago

Mercedes is making a new game from pieces of several older games. She plans to cover each face of a pair of polyhedral dice with

Leya [2.2K]

Answer: I need the answer too. I hop someone answers

Step-by-step explanation:

3 0

3 years ago

Fifty- three students from 32 different schools signed up for a multi-classroom project. About how many students signed up for t

inessss [21]

Hello there.

<span>Fifty- three students from 32 different schools signed up for a multi-classroom project. About how many students signed up for the project?

</span><span>B. about 1,800 students
</span>

5 0

3 years ago

Read 2 more answers

Is the function y=1/9x-6 linear or nonlinear?

Galina-37 [17]

It is in the form y = mx + b. therefore it is linear.

6 0

3 years ago