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3 years ago

What is the effect of two parallel lines are rotated 90 clockwise

Mathematics

1 answer:

PSYCHO15rus [73]3 years ago

8 0

sorrry dont know my bad

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Can I get some Math help, please? I'll provide 40 points for this one.

lukranit [14]

I think it's the first the, second to the last, and the last one that are correct

8 0

3 years ago

Read 2 more answers

An SRS of 100 flights of a large airline (airline 1) showed that 64 were on time. An SRS of 100 flights of another large airline

IRINA_888 [86]

Answer:

Option b) between 0.05 and 0.01.

Step-by-step explanation:

We are given the following in the question:

$x_1 = 64\\n_1 = 100\\x_2 = 80\\n_2 = 100$

Let $p_1$ and $p_2$ be the proportion of all parts from suppliers 1 and 2, respectively, that are defective.

$p_1 = \dfrac{x_1}{n_1} = \dfrac{64}{100} = 0.64\\\\p_2 = \dfrac{x_2}{n_2} = \dfrac{x_2}{n_2} = \dfrac{80}{100}= 0.8$

First, we design the null and the alternate hypothesis

$H_{0}: p_1 = p_2\\H_A: p_1 \neq p_2$

We use Two-tailed z test to perform this hypothesis.

Formula:

$\text{Pooled P} = \dfrac{x_1+x_2}{n_1+n_2}\\\\Q = 1 - P\\\\Z_{stat} = \dfrac{p_1-p_2}{\sqrt{PQ(\frac{1}{n_1} + \frac{1}{n_2})}}$

Putting all the values, we get,

$\text{Pooled P} = \dfrac{80+64}{100+100} = 0.72\\\\Q = 1 - 0.72 = 0.28\\\\Z_{stat} = \frac{0.64-0.8}{\sqrt{0.72\times 0.28(\frac{1}{100} + \frac{1}{100})}} = -2.5198$

Now, we calculate the p-value from the table at 0.05 significance level.

P-value = 0.01174

Since,

$0.05 > 0.01174 > 0.01$

Thus, the correct answer is

Option b) between 0.05 and 0.01.

6 0

3 years ago

there are 20 children in the cast of a class play and 8 of the children are boys of the boys 4 have a speaking part in the play

lidiya [134]

There is a 40% chance that the randomly selected child will have a speaking part.

7 0

3 years ago

A store buys a camera for $80 and decides to markup the price 35%. How much does the camera sell for?

cestrela7 [59]

Step-by-step explanation:

80$ is original price so 100%

markup by 35% make price 135%

crossmultiplication

ans=108

4 0

3 years ago

Find the 40th term of the following arithmetic sequence:16,6,-4,-14

KiRa [710]

Let the 40th number be x
(x-16)/(-10) + 1 = 40
x-16 = 39(-10)
x = -390 + 16
x = -374

The 40th number in the sequence is -374

6 0

3 years ago