Question
Asked Nov 19, 2019
25 views

A security code consists of a person's first and last initials followed by four digits. What is the probability of guessing a person's security code on the first try? 

check_circle

Expert Answer

Step 1

The probability of an event is defined as

 

help_outline

Image Transcriptionclose

N(A) P(A) N(S)

fullscreen
Step 2

It is given that the security starts with the first and last initial of the person, followed by four digits. A digit has 10 possible ways and there are 26 letters in the alphabet.

The first initial can be filled with 26 ways, as there are 26 letters in the alphabet. The second digit, third and fourth digits can be filled with 10 possible ways. The last initial can be filled with 26 possible ways.

Step 3

The number of possible ways for security co...

help_outline

Image Transcriptionclose

N(s) 26x 10 x10 x 10 x10 x 26 6,760,000

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Math

Statistics

Other

Related Statistics Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: THIS NOT GRADED ASSIGIMENT , IT IS AN OLD EXAM QUESTION.

A: (a) Computation of seven-step hypothesis test:(i) Parameter of interest:Let p1 denote the proportion...

question_answer

Q: given n=31 , s=7, Xbar= 14 for an 80% confidence interval find,  standard error margin of error

A: From the given information, the sample size is n=31, the sample mean is x-bar=14 and the sample stan...

question_answer

Q: Here is a bivariate data set.xy182425915011737106295223812246 Find the correlation coefficient and r...

A: Step-by-step procedure to find the correlation using Excel Megastat:Enter the bivariate data into Ex...

question_answer

Q: I'm not sure what t-value is in order so solve for it.

A: The t-distribution is used, because the population standard deviation is unknown and the sample stan...

question_answer

Q: Could you do Problem 6, questions a, b, and c?

A: Note:Hey there! Thank you for the question. We have found the probabilities under the standard norma...

question_answer

Q: 5.22 High School and beyond, Part II: We considered the differences between the reading and writing ...

A: Introduction:The 100 (1 – α) % confidence interval for the population mean difference, μd, for given...

question_answer

Q: nequals=75 Suppose a simple random sample of size is obtained from a population whose size is Upper ...

A: It is given that n is 75, N is 15,000 and p is 0.4.

question_answer

Q: Do Pinterest shoppers and Facebook shoppers differ with respect to spending behavior? A study of bro...

A: 1. The claim of the problem is testing whether there  is any evidence of a difference in the varianc...

question_answer

Q: Question 2 in image

A: Given information:Number of occurrence (n) = 6Degree of freedom = n-1                               ...