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The lifespans of crocodiles have an approximately Normal distribution, with a mean of 18 years and a standard deviation of 2.6 years. What proportion of crocodiles live between 17.5 and 20.5 years?

Find the z-table here.

0.3147
0.4068
0.5932
0.6853

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The Lifespans Of Crocodiles Have An Approximately Normal Distribution With A Mean Of 18 Years And A Standard Deviation Of 26 Years What Proportion Of Crocodiles class=

Sagot :

Option B) is correct 0.4068  portion of crocodiles live between 17.5 and 20.5

The lifespans of crocodiles have an approximately Normal distribution, with a mean of 18 years and a standard deviation of 2.6 years.

What is z-table?

Z-table is tabulated data that gives the information of value of  percentage of data.

standard deviation = 2.6 ;  mean (μ)= 18
lives between 17.5 and 20.5

x= (20.5+17.5)/2=19
Z = (X - μ) / σ
z=-(19-18)/2.6
z= 0.38

While compare it with the z table is gives 0.4068.

Thus the required value of Z = 0.4068

learn more about z-table here:
https://brainly.com/question/6096474

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