I have worked out part A but need help to work out part B.  The notes say it can be done using technology- can you please show me using the Ti-84 plus.   Please use step by step.  if this calculator is not able to perform the functions can you do manually and again step by step?  Thank you   Assume that females have pulse rates that are normally distributed with a mean of=73.0beats per minute and a standard deviation of =12.5 beats per minute.  a. If 1 adult female is randomly​ selected, find the probability that her pulse rate is less than 80 beats per minute.   The probability is 0.7123 ​(Round to four decimal places as​ needed.)   b. If 4 adult females are randomly​ selected, find the probability that they have pulse rates with a mean less than 80 beats per minute.   What is the probability?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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I have worked out part A but need help to work out part B.  The notes say it can be done using technology- can you please show me using the Ti-84 plus.   Please use step by step.  if this calculator is not able to perform the functions can you do manually and again step by step?  Thank you
 
Assume that females have pulse rates that are normally distributed with a mean of=73.0beats per minute and a standard deviation of
=12.5 beats per minute. 
a. If 1 adult female is randomly​ selected, find the probability that her pulse rate is less than
80
beats per minute.
 
The probability is
0.7123
​(Round to four decimal places as​ needed.)
 
b. If 4 adult females are randomly​ selected, find the probability that they have pulse rates with a mean less than 80 beats per minute.
 
What is the probability?
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