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Minchanka [31]
3 years ago
6

Which inequalities are true? Select the four correct answers.

Mathematics
1 answer:
mixas84 [53]3 years ago
8 0

Answer:1,2,3,5

Step-by-step explanation:

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What percentage of babies born in the United States are classified as having a low birthweight (<2500g)? explain how you got
lawyer [7]

Answer:

2.28% of babies born in the United States having a low birth weight.

Step-by-step explanation:

<u>The complete question is</u>: In the United States, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g. What percent of babies born in the United States are classified as having a low birth weight (< 2,500 g)? Explain how you got your answer.

We are given that in the United States, birth weights of newborn babies are approximately normally distributed with a mean of μ = 3,500 g and a standard deviation of σ = 500 g.

Let X = <u><em>birth weights of newborn babies</em></u>

The z-score probability distribution for the normal distribution is given by;

                          Z  =  \frac{X-\mu}{\sigma}  ~ N(0,1)

where, \mu = population mean = 3,500 g

            \sigma = standard deviation = 500 g

So, X ~ N(\mu=3500, \sigma^{2} = 500)

Now, the percent of babies born in the United States having a low birth weight is given by = P(X < 2500 mg)

         

   P(X < 2500 mg) = P( \frac{X-\mu}{\sigma} < \frac{2500-3500}{500} ) = P(Z < -2) = 1 - P(Z \leq 2)

                                                                 = 1 - 0.97725 = 0.02275 or 2.28%

The above probability is calculated by looking at the value of x = 2 in the z table which has an area of 0.97725.

4 0
3 years ago
Identify the slope of the line that passes through the given points (4, 4) and (-2, -3). Identify the slope of the line that pas
bogdanovich [222]

Answer:

m = 7/6

m = -4/9

Step-by-step explanation:

y2 - y1 / x2 - x1

The formula to find the slope.

3 0
3 years ago
The graph represents function 1, and the equation represents function 2:
Vinvika [58]
The rate of change of function 1 (a horizontal line) is zero.

The rate of change (slope) of function 2 is the x-coefficient, 8.

8 is 8 more than 0.

The 4th selection is appropriat:
  8
8 0
3 years ago
Read 2 more answers
What does y equal??????
tangare [24]

Answer:

118 degrees

Step-by-step explanation:

I think you it's the same, because it a just rotation of the shape.

5 0
2 years ago
Read 2 more answers
A small Business earns a profit of $6500 in January and $17,500 in May. What is the rate of change in profit for this time perio
lukranit [14]
Answer:
Rate of change of profit for this period = $2750 / month
4 0
3 years ago
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