The shaded parts of the bar below represent a fraction.

Mathematics

2 answers:

Alja [10]3 years ago

7 0

Answer:

A fraction bar divided into 2 parts. 1 part is shaded.

Step-by-step explanation:

Divide your answers, as well as your problem.

Problem = 2/4 = .5

First answer = 1/2 = .5

Thepotemich [5.8K]3 years ago

4 0

Answer:

A fraction bar divided into 2 parts. 1 part is shaded.

Step-by-step explanation:

A bar divided into 4 parts with 2 parts shaded is the same as one half shaded, and a bar with 2 parts with one part shaded also equals one half.

The other options would yield 3/4, 2/8 (1/4), and 4/12 ( 1/3) respectively.

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In the United States, the mean birth weight for boys is 3.41 kg with a standard deviation of 0.55 kg. Assume that the distributi

lyudmila [28]

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The proportion of baby boys in the United States that are born with low birth weight is 0.0495.

Step-by-step explanation:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

3.41 kg with a standard deviation of 0.55 kg.

This means that $\mu = 3.41, \sigma = 0.55$