statsguru
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
The probability that a person in the United States has type B plus blood is 7%. Four unrelated people in the United States are selected at random. Complete parts (a) through (d).
(a) Find the probability that all four have type B plus blood.
(b) Find the probability that none of the four have type B blood.
(c) Find the probability that at least one of the four has type B plus blood.
(d) Which of the events can be considered unusual? Explain. Select all that apply.
A. The event in part (b) is unusual because its probability is less than or equal to 0.05.
B. None of these events are unusual.
C. The event in part (a) is unusual because its probability is less than or equal to 0.05.
D. The event in part (C) is unusual because its probability is less than or equal to 0.05.