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Lera25 [3.4K]
3 years ago
12

Help ME PLSSS 13 points

Mathematics
2 answers:
Greeley [361]3 years ago
8 0

Answer:

6

Step-by-step explanation:

Ber [7]3 years ago
8 0

Answer:

Answer is 6 pay attention to class kid

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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
IS THIS CORRECT?
Tems11 [23]
Answer:
Yes
Explanation:
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2 years ago
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PLEASE HELP ME!John invests $2,975 at 4% interest compounded annually. What will be the balance in the account after 2.5 years?
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2975(1+0.04)^2.5=???? Hope it helps :-)
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The expression 12x+8 represents the perimeter of a square write 12x+8 as a product then tell what expression represents one side
Pani-rosa [81]

Answer:

Step-by-step explanation:

Find the greatest common factor of 12x + 8

4(3x + 2)  so one side is 4 and the other is 3x + 2

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2 years ago
Find highest common factor 12 & 20
eimsori [14]
It's 4. The factors of 12 are: 1,2,3,4,6,12. The factors of 20 are: 1,2,4,5,10,20.
5 0
3 years ago
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