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3 years ago

Your flight from New York City, USA to Frankfurt Germany was $ 324.50.

Mathematics

1 answer:

GrogVix [38]3 years ago

4 0

Sorry i need pointsss so 15 is your answer and i can leave

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In a random sample of 45 newborn babies, what is the probability that 40% or fewer of the sample are boys. (Use 3 decimal places

erastova [34]

Answer:

$z= \frac{p- \mu_p}{\sigma_p}$

And the z score for 0.4 is

$z = \frac{0.4-0.4}{\sigma_p} = 0$

And then the probability desired would be:

$P(p$

Step-by-step explanation:

The normal approximation for this case is satisfied since the value for p is near to 0.5 and the sample size is large enough, and we have:

$np = 45*0.4= 18 >10$

$n(1-p) = 45*0.6= 27 >10$

For this case we can assume that the population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

Where:

$\mu_{p}= \hat p = 0.4$

$\sigma_p = \sqrt{\frac{p(1-p)}(n} =\sqrt{\frac{0.4(1-0.4)}(45}= 0.0703$

And we want to find this probability:

$P(p$

And we can use the z score formula given by:

$z= \frac{p- \mu_p}{\sigma_p}$

And the z score for 0.4 is

$z = \frac{0.4-0.4}{\sigma_p} = 0$

And then the probability desired would be:

$P(p$

7 0

3 years ago

Read 2 more answers

M<RPS = 6x +11°<br>help

Fudgin [204]

Answer:

its still 6x + 11 they dont add

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Please help anyone 50 points to whom ever answers

lys-0071 [83]

Answer:

1: 80 (Vertical angles congruent)

2: 70 (Vertical angles congruent)

4: 110 (Straight angle w/ angle 2, 180-70 {known variable})

5: 90 (Right angle)

6: 90 (Right angle)

7: 20 (180-90-70 (unmarked angle opposite 4)

10:

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3 years ago

Name the property used : fast i beg you<br><br> a) -17 ×1 = -17<br> b) (-5) + 6 = 6 + (-5)

Sergeeva-Olga [200]

Answer:

a) identity property of multiplication

b) commutative property in addition

4 0

3 years ago

Use the table to work out the values of a, b, c, and d.

zlopas [31]

Step-by-step explanation:

6 0

3 years ago