All categories

3 years ago

This isn’t about the assignment but how can i change my plan so they can stop charging my card

Mathematics

1 answer:

natka813 [3]3 years ago

4 0

Answer:

Step-by-step explanation:

You have to be more specific. Do you mean a irl credit card?

You might be interested in

Please answer, Thank you!

Leto [7]

Answer:

61.5

Step-by-step explanation:

6.755-3311=3444

3444 divded by 56=61.5

4 0

3 years ago

) Beth wants to determine a 99 percent confidence interval for the true proportion p of high school students in the area who att

Lunna [17]

Answer:

n has to be at least 16577.

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 zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

Out of n randomly selected students she finds that that exactly half attend their home basketball games.

This means that $\pi = 0.5$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$ .

About how large would n have to be to get a margin of error less than 0.01 for p

We have to find n for which M = 0.01. So

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

$0.01 = 2.575\sqrt{\frac{0.5*0.5}{n}}$

$0.01\sqrt{n} = 2.575*0.5$

$\sqrt{n} = \frac{2.575*0.5}{0.01}$

$(\sqrt{n})^2 = (\frac{2.575*0.5}{0.01})^2$

$n = 16576.6$

Rounding up

n has to be at least 16577.

6 0

3 years ago

Pleaseeeee I needdd help, please

Arada [10]

Answer:

Step-by-step explanation:

sin²x+cos²x = 1. No Matter What is the value of x. For Explanation: Sin x is opposite_side/hypotenuse of a Right angle triangle. Cos x is adjacent_side/hypotenuse of a Right angle triangle.

4 0

3 years ago

HELPPPPPP?? PLSSS??? okay ASAPPPP THANK YOUUUU

Ivenika [448]

Answer:

1/2

Step-by-step explanation:

Theres 2 odd numbers on the wheel out of 4, so half the wheel is odd numbers, so theres a 50% chance of it landing onto a odd number which is equivalent to 1/2

7 0

3 years ago

Solve for x: 3 < x + 3 < 6

Vesnalui [34]

The answer is D. 0>3

6 0

3 years ago