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Dafna1 [17]
3 years ago
9

HELPPPPPPPPPPPP! HELPPPPPPPPPPPP!

Mathematics
2 answers:
vesna_86 [32]3 years ago
7 0
Okie p utcpc gu puugkuxutupxpxuxuoxouuxuoxtxtpxotuxgxpxigxpccoucutxxpixditxgixcgcgicgicipcgicic
serious [3.7K]3 years ago
7 0
Okay I think it’s okay to be able too and the only one that is the same side of that the same side is kinda cute
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8.52 The heights of 2-year-old children are normally distributed with a mean of 32 inches and a standard deviation of 1.5 inches
sweet [91]

Answer:

Heights of 29.5 and below could be a problem.

Step-by-step explanation:

Normal Probability Distribution

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

In a set with mean \mu and standard deviation \sigma, the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

The heights of 2-year-old children are normally distributed with a mean of 32 inches and a standard deviation of 1.5 inches.

This means that \mu = 32, \sigma = 1.5

There may be a problem when a child is in the top or bottom 5% of heights. Determine the heights of 2-year-old children that could be a problem.

Heights at the 5th percentile and below. The 5th percentile is X when Z has a p-value of 0.05, so X when Z = -1.645. Thus

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

-1.645 = \frac{X - 32}{1.5}

X - 32 = -1.645*1.5

X = 29.5

Heights of 29.5 and below could be a problem.

4 0
2 years ago
Help me please i need to do 3 months of hw in 2 hours help me please
Scrat [10]
3 months of homework, w t h have u been doinggg
6 0
3 years ago
Read 2 more answers
If 16 counters are 4/9, then what is the ONE?
notsponge [240]
36...

<span>divide your 16 by 4, so that you have 1/9. You then multiply the resulting number(4) by your denominator, 9. 4 times 9 = 36</span>
6 0
3 years ago
Read 2 more answers
I need help!!!!!!<br> Help Needed!!!!
tatiyna

help with what? be sure to put everything you need to say into a question

5 0
3 years ago
Solve the system of equations by elimination. Show your work. i’ll give brainliest
My name is Ann [436]

Answer:

x = 5

y = 4

Step-by-step explanation:

multiply the second equation by -1 and add the first equation to eliminate "x"

4x+6y=44\\-4x-2y=-28
_____________

       4y=16

y=16/4 =4

Replace "y" in the first equation:

4x+6(4)=44

4x+24=44

4x=44-24

x=20/4=5

Hope this helps

5 0
2 years ago
Read 2 more answers
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