Question

Assume a normal distribution and find the following probabilities.

(Round the values of z to 2 decimal places. Round your answers to 4 decimal places.)

P(x ≥ 73 | μ = 60 and σ = 2.82)

Answer 1

Solution :

Given that ,

mean = = 60

standard deviation = = 2.82

P(x 73) = 1 - P(x   73 )

= 1 - P[(x - ) / (73 - 60) / 2.82]

= 1 -  P(z 4.61)   

  Using z table,

= 1 - 1

= 0