Assume the random variable x is normally distributed with mean and standard deviation . Find the indicated probability.

Complete Question

Assume the random variable x is normally distributed with mean u=87 and standard deviation o=5. Find the indicated probability.

P(x<81)

P(x<81)=__(Round to four decimal places).

The  value  is  

Step-by-step explanation:

From the question we are told that

  The mean is  

  The  standard deviation is  

The probability is mathematically represented as

Generally  

From the z-table  

So              

tip $2.90

total $17.40

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.