Logo
Home Study Material Contact Search
AI Chat FREE
  1. mathematics
  2. statistics
  3. 1. let z be a standard normal random variable. fin

1. Let Z be a standard normal random variable. Find… a. Pr (Z ≥ -0.78) b....

60.1K

Verified Solution

Question

Statistics

1. Let Z be a standard normal random variable. Find…

a. Pr (Z ≥ -0.78) b. Pr(-0.82  Z  1.31)

2. A random variable X is normally distributed with mean ? = 25.5and standard deviation ? .0= 3.25.

Find Pr(23.03 ≤ ?? ≤ 29.14)

3. The math SAT is scaled so that the mean score is 500 and thestandard deviation is 100.
Assuming scores are normally distributed, find the probability thata randomly selected student
scores

a. higher than 645 on the test. b. at most 475 on the test  

4. Adult male heights are a normal random variable with mean 69inches and a standard deviation of 3 inches. Find the height, tothe nearest inch, for which only 8 percent of adult males aretaller (i.e. find the 92nd percentile)

Answer & Explanation Solved by verified expert
4.0 Ratings (415 Votes)
1 Let a Now From standard normal distribution tableb From standard normal distribution table2 Let Now From    See Answer
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: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Python Practice Sample:   Write code to replace every occurrence of THE or the with ### and every...

Programming
Q

ule 8: A Lexical Definition Should Indicate the Context to Which the Definiens Pertains One word will...

Psychology
Q

15 Consider a spherical volume which has uniform charge density p from x R to...

Physics
Q

A uniform semi circular ring of radius R 5m and mass m is free to...

Physics
Q

11 Choose the correct option 1 1 AU 9 46 x 1015 m 2 1...

Physics
Q

There are 9 performers who will present their comedy acts this weekend at a comedy...

Basic Math
Q

Use vertices and asymptotes to graph the hyperbola. State the coordinates of the vertices. Find...

Basic Math
Q

Given the function P t There are at most at most

Calculus
Q

Find the distance between the pair of points (3.3,7.2) and (-0.7,5.2). If numbersplaces.The distance between...

Calculus
Q

create business Research proposal on internal auditing

Accounting
Q

The Firm in Question is Southwest Airlines. The purpose of this assignment is to evaluate...

Accounting
Q

Columns for GST Payables could be found in which two special journals? ...

Accounting