Assume that x is a normally distributed random variable with a ...

[geodog55]

Assume that x is a normally distributed random variable with a mean of 70 and a standard deviation of 10 Find P(x < 48).

Question 2

Assume that x is a normally distributed random variable with a mean of 70 and a standard deviation of 10 Find P(48 < x < 88).

[princessflame2016]

Answer to Question 1

P(x < 48) = P(z < -2.20) = 0.5000  0.4861 = 0.0139

Answer to Question 2

P(48 < x < 88) = P(-2.20 < z < 1.80) = 0.4861 + 0.4641 = 0.9502

[geodog55]

Great answer, keep it coming

[marict]

Thanks for the timely response, appreciate it