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X follows normal distribution with mean 50 and variance as 100 what is P (x>=60)?
Most Upvoted Answer
X follows normal distribution with mean 50 and variance as 100 what is...
Solution:

Given, X follows normal distribution with mean 50 and variance as 100.

We need to find P (x>=60).

We can solve this problem using the standard normal distribution table or using the z-score formula.

Using the standard normal distribution table:

Step 1: Convert X to z-score.

z = (x - mean) / standard deviation

z = (60 - 50) / √100

z = 1

Step 2: Find the probability using the standard normal distribution table.

P (z >= 1) = 0.1587

Using the z-score formula:

Step 1: Convert X to z-score.

z = (x - mean) / standard deviation

z = (60 - 50) / √100

z = 1

Step 2: Find the probability using the z-score formula.

P (z >= 1) = 1 - P (z < />

P (z >= 1) = 1 - 0.8413

P (z >= 1) = 0.1587

Therefore, P (x>=60) = P (z >= 1) = 0.1587.

Conclusion:

The probability of getting a value greater than or equal to 60 in a normal distribution with mean 50 and variance as 100 is 0.1587.
Community Answer
X follows normal distribution with mean 50 and variance as 100 what is...
Here mean = 50. variance = 100
SD = 10. (√100)


We find great then equal to 60

so , formula, Z= X - mean ÷ SD

Z= 60 - 50 ÷ 10

Z = 1

HERE ask that great then equal to 60

so in normal distribution ( Bell shape).

in Bell shape curved so area - infinity to mean parts is 0.5. ane

another reminder part is 0 .3413.( take from Z Costco easy available online ).



great then equal to 60 means that
= 1 -( area of - infinity to mean + area mean to Z = 1)

= 1 - ( 0.5 + 0.3413( from Z Costco ) )

= 1- 0.8413

= 0.1587

= 0.16
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X follows normal distribution with mean 50 and variance as 100 what is P (x>=60)?
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