All categories

2 years ago

Help, please, I don't understand math that well and really wanna pass this year

Mathematics

1 answer:

Harman [31]2 years ago

6 0

55.5 (the outside angle is going to be half of the inside angle if it’s on the center point)

You might be interested in

Assume that adults were randomly selected for a poll. They were asked if they "favor or oppose using federal tax dollars to fund

ser-zykov [4K]

Testing the hypothesis, it is found that since the p-value of the test is 0.0042 < 0.01, it can be concluded that the proportion of subjects who respond in favor is different of 0.5.

At the null hypothesis, it is tested if the proportion is of 0.5, that is:

$H_0: p = 0.5$

At the alternative hypothesis, it is tested if the proportion is different of 0.5, that is:

$H_1: p \neq 0.5$

The test statistic is given by:

$z = \frac{\overline{p} - p}{\sqrt{\frac{p(1 - p)}{n}}}$

In which:

$\overline{p}$ is the sample proportion.
p is the value tested at the null hypothesis.
n is the sample size.

In this problem, the parameters are given by:

$p = 0.5, n = 483 + 398 = 881, \overline{p} = \frac{483}{881} = 0.5482$

The value of the test statistic is:

$z = \frac{\overline{p} - p}{\sqrt{\frac{p(1 - p)}{n}}}$

$z = \frac{0.5482 - 0.5}{\sqrt{\frac{0.5(0.5)}{881}}}$

$z = 2.86$

Since we have a two-tailed test(test if the proportion is different of a value), the p-value of the test is P(|z| > 2.86), which is 2 multiplied by the p-value of z = -2.86.

Looking at the z-table, z = -2.86 has a p-value of 0.0021.

2(0.0021) = 0.0042

Since the p-value of the test is 0.0042 < 0.01, it can be concluded that the proportion of subjects who respond in favor is different of 0.5.

A similar problem is given at brainly.com/question/24330815

3 0

2 years ago

Evaluate (-2)^6 + (-3)^2

jok3333 [9.3K]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

in a shipment of new books for a library 5/12 of the books were poetry and 2/5 were biographies the remainder of the books were

antiseptic1488 [7]

Hello again. :)
Step 1: Make both fractions have common denominators. (24/60 and 25/60)
Step 2: Add the fractions. (49/60)
Step 3: Subtract 49 from 60. (11/60)
Step 4: The answer is B.

Hope this helps! ＼(≧▽≦)／

6 0

3 years ago

I need help!! F(4) I f f(x)=3x-1

Amanda [17]

Answer:

f(4) =11

Step-by-step explanation:

f(x)=3x-1

Let x = 4

f(4)=3*4-1

= 12-1

= 11

6 0

3 years ago

How many different combinations of pennies, nickels, dimes, quarters, and half dollars can a piggy bank contain if it has 20 coi

ycow [4]

Because there are 20 coins plus four bars = 24 items to choose. You want to choose where to put the four bars, thus C(24,4). There are four bars, not five. Note that four bars divide the 20 coins into five sections. Five bars would divide it into six, but we only have five different kinds of coins to choose from.

5 0

3 years ago