1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sammy [17]
2 years ago
8

How much difference do a couple of weeks make for birth weight? Late-preterm babies are born with 34 to 36 completed weeks of ge

station. The distribution of birth weights (in grams) for late-preterm babies is approximately N(2750, 560).
1. What is the probability that a randomly chosen late-preterm baby would have a low birth weight (less than 2500 grams)? Round your answer to 4 decimal places.
2. What is the probability that a randomly chosen late-preterm baby would have a very low birth weight (less than 1500 grams)? Round your answer to 4 decimal places.
Mathematics
1 answer:
stiks02 [169]2 years ago
3 0

Answer:

a) 0.3277

b) 0.0128

Step-by-step explanation:

We are given the following information in the question:

N(2750, 560).

Mean, μ = 2750

Standard Deviation, σ = 560

We are given that the distribution of distribution of birth weights is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P (less than 2500 grams)

P(x < 2500)

P( x < 2500) = P( z < \displaystyle\frac{2500 - 2750}{560}) = P(z < -0.4464)

Calculation the value from standard normal z table, we have,  

P(x < 2500) = P(z < -0.4464) = 0.3277 = 32.77\%

b) P ((less than 1500 grams)

P(x < 1500)

P( x < 1500) = P( z < \displaystyle\frac{1500 - 2750}{560}) = P(z < -2.2321)

Calculation the value from standard normal z table, we have,  

P(x < 1500) = P(z < -2.2321) = 0.0128 = 1.28\%

You might be interested in
Thirty pounds of grass seed will cover 1\3 of an acre. Which unit rate describes this situation?
erik [133]
As always, the "unit rate" can be written two ways. You have not specified which one you want.

.. (30 lb)/(1/3 ac) = 90 lb/ac

.. (1/3 ac)/(30 lb) = (1/90) ac/lb
7 0
3 years ago
Please helppp (had to have 20 words haha)
s2008m [1.1K]

Answer:

w==77

Step-by-step explanation:

The sum of the 2 opposite interior angles equals the exterior angle.

w-36 +w-20=w+21

combine like terms: 2w-56=w+21

subtract w from both sides: w-56=21

add 56 to both sides: <u>w=77</u>

6 0
3 years ago
Select all of the following points that lie on the graph of f(x) = 7 - 3x. (-2, 1) (-1, 10) (0, 7) (1, 5) (2, 1)
lesya [120]
(-1,10), (2,1) , (0,7), (-2,1)
8 0
3 years ago
Choose all that give the correct expression for the quantity described.
dmitriy555 [2]

Answer:

Its D on e2020

Step-by-step explanation:

trust me

4 0
3 years ago
Write 171 miles in 3 hours as a unit rate
Andrew [12]
Mph is what you are going for

so 171/3 = 57

57mph is your answer

hope this helps
3 0
3 years ago
Other questions:
  • Solve the system of equations below.
    9·1 answer
  • Convert the units of weight.
    12·2 answers
  • Plz help !! Needed to graduate
    12·2 answers
  • Find 39% of 65......
    10·1 answer
  • I really need help, please
    15·2 answers
  • If f(x) = –x3, g(x) = 3x2 – 1, and h(x) = 2x + 5, what is the degree of [f o g o h](x)?
    12·2 answers
  • What is the antecedent for the pronoun "they" in the following passage?
    12·2 answers
  • WILL GIVE BRAINLIEST!!!!!!
    14·1 answer
  • Yeah just yeah i need help-
    15·2 answers
  • What is 127/100 as a decimal
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!