Jujuba D.
asked • 05/27/21
Find the probability
Mike D.
answered • 05/27/21
Effective, patient, empathic, math and science tutor
On TI-84
2A
use normalcdf
lower = 20
upper = 1e99
mean = 18
sd = 7.6
2b
normalcdf
lower = 0
upper = 5
mean = 18
sd = 7.6
2c
normalcdf
lower = 9
upper = 27
mean = 18
sd = 7.6
subtract result from 1
(3)
invnorm
area = 0.883
mean = 18
sd = 7.6
(4)
invnorm
area = 1 - 0.648
mean = 18
sd = 7.6
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