Question

Assume that females have pulse rates that are normally distributed with a mean of mu equals 73.0 beats per minute and a standard deviation of sigma equals 12.5 beats per minute. Complete parts​ (a) through​ (c) below. a. If 1 adult female is randomly​ selected, find the probability that her pulse rate is between 69 beats per minute and 77 beats per minute. What is the probability

Answer 1

Given that ,

mean =   = 73.0

standard deviation = = 12.5     

n = 1

= 73.0

=  / n=   12.5/ 1= 12.5

P(69<     <77 ) = P[(69-73.0) /  12.5< ( - ) /   < (77 -73.0) / 12.5 )]

= P( -0.32< Z <0.32 )

= P(Z <0.32 ) - P(Z <-0.32 )

Using z table

=0.6255-0.3745

=0.2510

probability= 0.2510