Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

You just purchased the new safe:  It has a key pad with 26 letters on it. 

a. If the code is 4 random letters, and no letter is employed more than once,  how many different possible codes are there?

b. If the code is 4 random letters, and letters can be employed multiple times, how many different possible codes are there?

c. If no letter can be employed more than once. Does Order Matter?

d. If the manufacturer decided to make the more secure model which employs 5 letters (no repeats) how many codes are there then?

e. If letters can be employed multiple times and there're 5 letters, and the first letter should be an "A or B"   how many different codes are available?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M918595

Have any Question? 


Related Questions in Statistics and Probability

Consider the following two dynamic regression modelsmodel 1

Consider the following two dynamic regression models: Model 1 yt = αyt-1 + βxt + t Model 2 yt =γxt1-φL +t1-θL where L is the lag operator and α, β, γ, φ, and θ are parameters. Assume that t ∼ N(0, σ2) (not necessarily th ...

In a study of smokers who tried to quit smoking with

In a study of smokers who tried to quit smoking with nicotine patch therapy, 39 were smoking one year after the treatment, and 32 were not smoking one year after the treatment. We want to use a .05 significance level to ...

The percentage of people who recycle their old phone books

The percentage of people who recycle their old phone books is 15.8% on average. If 240 people are randomly selected, what is the probability that more than 20% of them recycle their phone books?

A hospital emergency room analyzed n17665 hourly

A hospital emergency room analyzed n=17,665 hourly observations on its average occupancy rates using six binary predictor variables representing days of the week and two binary predictors representing the 8 hour work shi ...

Suppose we would like to determine if the typical amount

Suppose we would like to determine if the typical amount spent per customer for dinner at a new restaurant in town is more than $20.00. A sample of 49 customers over a three-week period was randomly selected and the aver ...

Peter has two envelopes he puts 10k euros in one and 10k1

Peter has two envelopes. He puts 10k euros in one and 10 k+1 euros in the other, where k is the outcome of the toss of a fair die. Peter gives one of the envelopes to Mark and one to Luke (neither Mark nor Luke knows the ...

Prepare a paper in which you describe path analysis be sure

Prepare a paper in which you describe path analysis. Be sure to compare and contrast this technique with multiple regression analyses. Provide an example of when it would be useful to conduct path analysis by describing ...

Three experiments investigating the relation between need

Three experiments investigating the relation between need for cognitive closure and persuasion were performed. Part of the study involved administering a "need for closure scale" to a group of students enrolled in an int ...

Many grocery stores and large retailers such as wal-mart

Many grocery stores and large retailers such as Wal-Mart and K-Mart have installed self checkout systems so shoppers can scan their own items and cash out themselves. How do customers like this service and how often do t ...

Three individuals are seated in a room each one of them is

Three individuals are seated in a room. Each one of them is wearing a hat, which may be either red or white. Each of them sees the hats worn by the others, but cannot see his own hat (and in particular does not know its ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro