Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. basic math
  3. in a multiple choice test, there are 10 questions.

In a multiple choice test, there are 10 questions. Each question has 4 choices, one...

90.2K

Verified Solution

Question

Basic Math

image

In a multiple choice test, there are 10 questions. Each question has 4 choices, one of which is correct. Tom, who knows nothing about the subject, guesses each answer at random. Let (X) be the number of questions that Tom has actually guessed correctly. Find the mean and standard deviation of the (X)- distribution.

Answer & Explanation Solved by verified expert
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Finance
1.2K views

1- You are evaluating a capital project with a Net Investment of $400,000, which includes an...

Physics
1.2K views

What is a breakdown of a periodization cycle of a 12-Month Basketball Training Program for a...

Electrical Engineering
1.2K views

Typical ultrasound consists of about 25 images extracted from a full-motion ultrasound examination. Each of these...

General Management
1.2K views

Perform ABC analysis for the following products: Item Volume (units/ year) Cost ($/unit) Annual $ Volume A 700 1 700 B 70 15 1050 C 965 4 3860 D 514 5 2570 E 20 15 300 F 770 32 24640 G 608 29 17632 H 513 2 1026 I 578 10 5780 J 199 2 398 57956 please, try to explain how can get...

Biology
1.2K views

Which of the following interactions maintain the protein secondary structures?1. Alpha helices and beta sheets...

Physics
1.2K views

A steel ball of mass m 1 kg 1 moving with velocity 50 m s...

Geometry
1.2K views

From the edge of a 1000 foot cliff the angles of depression to two cars...

Statistics
1.2K views

You spin the spinner once 3 2 What is P divisor of 42 Simplify your...

Calculus
1.2K views

Find for y 9x 4 dy dx dx 11 1 1 9x 4 10 9...

Algebra
1.2K views

9 REVIEW Sum 1 Solve each inequality 1 31 23 9 A r 6 or...

Accounting
1.2K views

Para crear una declaracin en el entorno de prctica, el profesional de impuestos debe ingresar...

Finance
1.2K views

NPV Project A Project X Question A (5 points) What is the IRR of Project...