Question

Solve each of the following questions using your calculator. tell me what you typed on the calculator. draw a picture for each problem. SHOW WORK

In a normal distribution find the data value(s) to the nearest whole number that:

i. Cuts off the bottom 35% if μ  = 97 and σ = 7

ii. Cuts off the middle 60% if μ = 110 and σ = 15

Answer 1

R Code :

######## I ######
c = qnorm(0.35, 97, 7)
c
Output:

######## I ######
> c = qnorm(0.35, 97, 7)
> c
[1] 94.30276

R Code:

######## II #####
a = qnorm(0.20, 110, 15)
a
b = qnorm(0.80, 110, 15)
b
Output:

> ######## II #####
> a = qnorm(0.20, 110, 15)
> a
[1] 97.37568
> b = qnorm(0.80, 110, 15)
> b
[1] 122.6243