3. The IQs of 100 students are normally distributed with a mean of 115 and a standarddeviation of 10.a) What is the probability of selecting students whose IQ ranges between 110 and 127?b) If you will select students who have at least an 1Q of 128, how many students arethey?c) If only the top 10 students from the group are selected, what would be the least IQ astudent must have to be part of the top 10?

The IQs of 100 students are normally distributed with a mean of 115 and a standard. deviation of 10.…

Answered: a) What is the probability of selecting…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

What is the probability that the sum of two randomly chosen integers between 20 and 40 inclusive is even (the possibility of the two integers being equal is allowed)?
With a standard 52 deck of cards find the probability to withdraw randomly a face card or a heart .
A local county has an unemployment rate of 6%. A random sample of 16 employable people are picked at random from the county and are asked if they are employed. Round answers to 4 decimal places. a) Find the probability that exactly 4 in the sample are unemployed. b) Find the probability that there are fewer than 3 in the sample are unemployed. c) Find the probability that there are more than 2 in the sample are unemployed. d) Find the probability that there are at most 3 in the sample are unemployed.
Assume this year's flu vaccine has a 80% chance of being effective. If the vaccine is given to 333 randomly selected people, answer the following. d) What is the probability that exactly 264 of them did not get the flu? Round final answer to 4 decimal places. e) What is the probability that less than 264 of them did not get the flu? Round final answer to 4 decimal places. f) What is the probability that more than 264 of them did not get the flu? Round final answer to 4 decimal places.
2. On average, a saleslady in a department store spends with her customer is 4 minutes. a) Find the probability that the saleslady spends more than 3 minutes with a customer? b) Find the probability that the saleslady spends between 4 to 5 minutes with a customer?
According to a survey, 10% of Americans are afraid to fly. Suppose 1100 Americans are sampled.a) What is the probability that 121 or more americans in the survey are afraid to fly? Write your answer as a percentage rounded to two decimal places. b) What is the probability that 165 or more americans in the survey are afraid to fly? Write your answer as a percentage rounded to two decimal places. c) What is the probability that 8% or less of the americans surveyed answered they were afraid to fly? Write your answer as a percentage rounded to two decimal places.
A local county has an unemployment rate of 5.8%. A random sample of 18 employable people are picked at random from the county and are asked if they are employed. Round answers to 4 decimal places. a) Find the probability that exactly 5 in the sample are unemployed. b) Find the probability that there are fewer than 4 in the sample are unemployed. c) Find the probability that there are more than 1 in the sample are unemployed. d) Find the probability that there are at most 4 in the sample are unemployed.
Assume that when adults with smartphones are randomly selected, 43% use them in meetings or classes. If 14 adult smartphone users are randomly selected, find the probability that fewer than 3 of them use their smartphones in meetings or classes. The probability is?
For the word "RETIVONUP",the letters are randomly arranged.Find the probability that all vowels are placed together?
From a group of 6 people, 4 are randomly selected. What is the probability the 4 oldest people in the group were selected? Give your answer as a reduced fraction.
A multiple-choice test contain 9 questions, each with five options. Suppose that a student just guesses on each question. What is the probability that the student answers at most 1 question correctly? answer correct to 4 decimals
Ali randomly answered all the questions in a 10-question test. There are 5 choices in each question and four wrongs lead to a right. According to this information; a) What is the probability of Ali answering the five questions correctly? b) What is the probability of Ali getting zero on this exam? c) If each question is worth 10 points, what is Ali's expected grade in this exam?

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS