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ozzi
3 years ago
8

A number is equal to the difference of four times the number and 18

Mathematics
1 answer:
sveticcg [70]3 years ago
6 0

Answer:

X = 4x-18

Step-by-step explanation:

X = “a number”^^

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A software engineer is creating a new computer software program. She wants to make sure that the crash rate is extremely low so
Soloha48 [4]

Answer:

a) the sample size is 400

b) 95% confidence Interval for p is ( 0.0286, 0.0714 )

Step-by-step explanation:

Given the data in the question;

sample size n = 400

x = 20

p = x / n = 20 / 400 = 0.05

q = 1 - p = 1 - 0.05 = 0.95

a)

n = 400

Hence, the sample size is 400

b) 95% confidence Interval for p;

At 95% confidence interval,

significance level ∝ = 1 - 95% = 1 - 0.95 = 0.05

∝/2 = 0.05 / 2 = 0.025

so, Z critical Value ; Z_{\alpha /2 = 1.96  { from table }

So for Confidence Interval for p;

⇒ p' ± Z_{\alpha /2√( p'q' / n )

we substitute

⇒ 0.05 ± 1.96√( (0.05 × 0.95 ) / 400 )

⇒ 0.05 ± 1.96√( 0.00011875 )

⇒ 0.05 ± 1.96 × 0.010897

⇒ 0.05 ± 0.021358

⇒ ( 0.05 - 0.021358 ), ( 0.05 + 0.021358 )

⇒ ( 0.0286, 0.0714 )

Therefore, 95% confidence Interval for p is ( 0.0286, 0.0714 )

8 0
2 years ago
Solve for the value of x.<br> x + 4°<br> 134°
Juli2301 [7.4K]

Step-by-step explanation:

The answer is 130° since you subtract 4° from both sides

4 0
3 years ago
4. A comprehensive study conducted by the National Institute of Child Health and Human Development tracked more than 1,000 child
andrezito [222]
Yes that’s right all
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ASAP NEEDED Which expression does the graphic represent? 8 positive tiles. 1 tile is crossed out. 7 minus 1 7 minus (negative 1)
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Answer:

8-1

Step-by-step explanation:

I know things : )

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The type of transformation PQRS undergoes is a . If vertex Q is at (-4, -5), then vertex Q′ is at ?
MissTica

Answer:

(-4, -5) it gives the answer in the question

Step-by-step explanation:

8 0
3 years ago
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