Question

Finding Probability Using a Normal Distribution

The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 3537 grams and a variance of 285,156. If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be less than 4172 grams. Round your answer to four decimal places.

Answer 1

Been a while since I took stat, but I think this is a z-score problem

Answer 2

Yes it is i need help desperately

Answer 3

Fundamental probability theory states:
\[P_{\chi}(\chi \le x) = F_{\chi}(x)\]In this question \(\chi\) is distributed as a normal distribution with \(\mu = 3537\) and \(\sigma^2 = 285,156\).
\(F_{\chi}(x)\) is the cumulative distribution function of \(\chi\), i.e. normalcdf.

Answer 4

So how do i do it?

Answer 5

So how do i do it?

Answer 6

Use a statistical calculator, Excel, wolfram alpha, etc. and use the cumulative distribution function for normal distribution (normalcdf) with given values for parameters x, \(\mu\) \(\sigma\).

Answer 7

I dont understand what u just said at all

Answer 8

I dont understand what u just said at all

Answer 9

How do i find the standard deviation?

Answer 10

Use this: http://www.danielsoper.com/statcalc3/calc.aspx?id=53
Mean = \(\mu\) = 3537
Standard deviation = \(\sqrt{variance}\) = \(\sqrt{\sigma^2}\) = \(\sigma\) = \(\sqrt{285,156}\)
x = 4172

Answer 11

Im sorry i still dont understand. I dont get that calculator. There isnt a a place for me to put the variance in

Answer 12

or is the variance the standard deviation?

Answer 13

standard deviation = \(\sqrt{variance}\)

Answer 14

Determine whether the following situation would produce a random sample. Write Yes or No and explain your answer.

Answer 15

ewborn Elephant Weights Newborn elephant calves usually weigh between 200 and 250 pounds—until October 2006, that is.

Answer 16

An SRS of 18 recent birth records at the local hospital was selected. In the sample, the average birth weight was 119.

Answer 17

(b) In a certain country, the probability that a baby that is born is a boy is 0.52 and the probably that a baby that is born is a girl is 0.48. A family has two children. If X is the number of girls born to a family, find the probability that the family has 0, 1, or 2 girls.
(a) Draw a tree diagram showing the possibilities for each outcome.
(b) Create the binomial distribution table for .
How to do you go about doing this? I suck at probability.

Answer 18

An SRS of 20 recent birth records at the local hospital were selected. In the sample, the average birth weight was 121.

Answer 19

An SRS of 20 recent birth records at the local hospital were selected. In the sample, the average birth weight was 121.

Answer 20

An SRS of 18 recent birth records at the local hospital was selected. In the sample, the average birth weight was 119.

Answer 21

In a certain country, the probability that a baby that is born is a boy is 0.52 and the probably that a baby that is born is a girl is 0.

Answer 22

1. In a certain country, the probability that a baby that is born is a boy is 0.52 and the probably that a baby that is born is a girl is 0.

Answer 23

Answer check~

Answer 24

Ruling on posting random posts. Any rules on that? @Vocaloid @Ultrilliam

Answer 25

What does the fox say?

Answer 26

-17.9 - 4.2\nWrite this in addition form~

Answer 27

Is this correct?

Answer 28

test

Answer 29

i need help

Answer 30

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Answer 31

Common Denominators~

Answer 32

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Answer 33

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Answer 34

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Answer 36

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Answer 37

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Answer 38

https:\/\/prnt.sc\/h14rku is this right?

Answer 39

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Answer 40

https:\/\/prnt.sc\/h14oam

Answer 41

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Answer 42

Restless tectonic plates move (shift) between one and fifteen centimeters per __________.