MATH 399N Week 3 Homework Solutions: → Spring 2017

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The access code for a​ car's security system consists of six digits. The first digit cannot be 9 and the last digit must be odd.

Q. How many different codes are​ available?

A. 450000

-how many events occur? 6 (6 digits)

-how many choices are there for the first digit? 9 (0,1,2,3,4,5,6,7,8)

-how many choices are there for the 2nd, 3rd, 4th and 5th? 10 (0-9)

-how many choices are there for the last digit? 5 (1,3,5,7,9)

9*10*10*10*10*5 (multiple the number of choices for each digit)

 

 

A probability experiment consists of rolling a​ 6-sided die. Find the probability of the event below.

rolling a number less than 5

 

 

Q. What is the probability?

A. 0.667

number of outcomes in event E/Total number of outcomes in sample space

6 outcomes in the sample space/4 outcomes for rolling less than 5

 

 

Q. If two events are independent, P(A|B) =P(B)

A. False; if events A and B are independent, then P (A and B) = P(A) * P (B)

 

 


                 Nursing Majors

​         Non-nursing majors

       Total

 

Males

93

1061

 1154

 

Females

723

1629

2352

 

Total

816

2690

3506

 

Q.

 Find the probability that a randomly selected student is male, given that the student is a nursing major.

 

...……………………………………………………………………………Continue

 

School / College / University / Term Date
Institution
Chamberlain College of Nusing
Term / Date
→ Spring 2017

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