• 0
Votes
name

A PHP Error was encountered

Severity: Notice

Message: Undefined index: userid

Filename: views/question.php

Line Number: 212

Backtrace:

File: /home/mycocrkc/statisticsanswered.com/application/views/question.php
Line: 212
Function: _error_handler

File: /home/mycocrkc/statisticsanswered.com/application/controllers/Questions.php
Line: 416
Function: view

File: /home/mycocrkc/statisticsanswered.com/index.php
Line: 315
Function: require_once

A certain tennis player makes a successful first serve 79​% of the time. Suppose the tennis player serves 70 times in a match.​ What's the probability that she makes at least 59 first​ serves?

Apply the binomial formulas for mean and standard deviation. 

mu  = n*p

standard deviation = sqrt(n*p*q)

The Use the standard normal function to calculate the probability. 

probability = 1- =NORM.DIST(59,B2,B3,TRUE)  = 0.1388

  • 0
Reply Report