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amid [387]
3 years ago
14

A doctor studying nutrition collected data on the weights (in kilograms) of infants in North Africa. The table below shows the m

ean weights for infants of different ages in the study. Plot the data in a scatter plot.

Mathematics
1 answer:
kipiarov [429]3 years ago
8 0

Answer:

Step-by-step explanation:

Edit: how do i delete my answer?

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A college conducts a common test for all the students. For the Mathematics portion of this test, the scores are normally distrib
Jet001 [13]

Using the normal distribution, it is found that 58.97% of students would be expected to score between 400 and 590.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

\mu = 502, \sigma = 115

The proportion of students between 400 and 590 is the <u>p-value of Z when X = 590 subtracted by the p-value of Z when X = 400</u>, hence:

X = 590:

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

Z = \frac{590 - 502}{115}

Z = 0.76

Z = 0.76 has a p-value of 0.7764.

X = 400:

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

Z = \frac{400 - 502}{115}

Z = -0.89

Z = -0.89 has a p-value of 0.1867.

0.7764 - 0.1867 = 0.5897 = 58.97%.

58.97% of students would be expected to score between 400 and 590.

More can be learned about the normal distribution at brainly.com/question/27643290

#SPJ1

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2 years ago
Erik needs a plumber and must decide between two companies. For a service visit, Plumber A charges $85 to send a plumber, plus $
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C. Plumber A and Plumber B will both charge $135 if they each work 2.5 h.
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3 years ago
Is is 6 2/7 rational or irrational
steposvetlana [31]

Step-by-step explanation:

6 2/7is rational

-19is rational but next I dont know

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3 years ago
Which decimal is less than 0.24 and greater than 0.007 is it 0.31 or 0.27 or 0.26 or 0.12
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The answer is 0.12. Hope I helped! please mark as the brainliest!
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3 years ago
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A rectangular block of metal measures 5 cm by 10 cm by 2 cm and has a mass of 700g. What is the volume of this block?
grin007 [14]
Volume = 5*10*2 = 100 cm³
Densidade = massa / volume
Densidade = 700g / 100 cm³
Densidade = 7g/cm³
8 0
3 years ago
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