What's wrong with the following statement?"Because the digits 0, 1, 2,9 are the normal results from lottery drawings, such randomly selected numbers have a normal distribution."Choose the correct answer below.A. Since the probability of each digit being selected is equal, lottery digits have a uniform distribution, not a normal distribution.B. The lottery digits have a normal distribution only if the digits are drawn without replacement, which is not specified.C. It is not the randomly selected digits that have a normal distribution but rather the chances of winning the lottery.O D. The lottery digits have a normal distribution only if the digits are drawn with replacement, which is not specified.

We have given that The digits 0, 1,2, ...9 are the normal resuts from lottery drawings.

Answered: What's wrong with the following…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The ages of students in a middle school have the following probability distribution: x 12 13 14 15 P(x) 0.25 0.29 0.32 0.14 a) What is the probability a student chosen at random is no less than 13 years old? b) What is the mean age of the students in middle school? c) What is the standard deviation for the ages of the students in the middle school?
According to a health publication, 16.5% of persons under the age of 65 have no health insurance coverage. Suppose that four persons under the age of 65 are randomly selected. a. Determine the probability distribution for the number, X, who have no health insurance coverage. b. Determine and interpret the mean of X.
A recent survey reported that 57% of 18- to 29-year-olds in a certain country own tablets. Using the binomial distribution, complete parts (a) through (e) below. a. What is the probability that in the next six 18- to 29-year-olds surveyed, four will own a tablet? b. What is the probability that in the next six 18- to 29-year-olds surveyed, all six will own a tablet? c. What is the probability that in the next six 18- to 29-year-olds surveyed, at least four will own a tablet? d. What are the mean and standard deviation of the number of 18- to 29-year-olds who will own a tablet in a survey of six? e. What assumption(s) do you need to make in (a) through (c)?
2. Approximately 11% of all people are left-handed. Consider 20 randomly selected students. In the questions below please provide the probability statements along with calculations and/or calculator functions with inputs wherever possible. a. -) If you are interested in the number of students out of 20 that are left-handed how would you define the random variable X in the context of this problem? What type of distribution would X follow and with what parameters? b. Find the probability exactly none are left-handed.
4 children. He makes a fast, wrong estimate of the probability of various mixes of boys and girls among QUESTION 3. Mr. Fastwrong is working for the census department and he is counting families that have the families. His assistant, Ms. Slowright, analyzes the issue and corrects his work. Fill her corrections of his wrong guesses into the table below. Number of boys among the 4 children 1 0 4 3 2 Number of girls among the 4 children 0 1 2 4 Use fractions (not percents) in your answers. Mr. Fastwrong's estimate of the fraction of families having this distribution of boys and girls 1/5 1/5 1/5 1/5 1/5 Ms. Slowright's estimate of the fraction of families having this distribution of boys and girls
Refer to the questions below and complete the table in the next slide: Identify the Event…. Determine the number of Sample Space (nS)… Identify the Sample Points … Determine the number of Sample Points … Find the probability P(Event) Please show your formulas were applicable… Rolling a Die and getting: An even number < 4 An odd number > 5 A prime number that is divisible by 2 A number that is a multiple of 6 At most a number 4 Rolling a pair of Dice and getting: 6. A Sum of a double that is equal to 6 7. An absolute Difference that is even and < 3 8. A product that is odd <= 5 9. A Quotient that is prime and a natural number 10. Both numbers are less than 3
2. In Manoa Valley on the island of Oahu (Hawaii) the annual rainfall averages 43.6 inches with standard deviation 7.5 inches. A year is chosen at random, find the probability: a). the annual rainfall is more than 56 inches: b). the annual rainfall is less than 32 inches: c). the rainfall is between 35 and 50 inches:
Suppose that 30 percent of an adult population have an infectious disease and 40 percent have achronic disease. Assume that having an infectious disease is independent from having a chronicdisease. For each of the questions below perform the calculation using appropriate statisticalnotation.a. What is the probability that a person selected at random will have both diseases?b. What is the probability of having the infectious disease for people with the chronic disease?c. What is the probability of having the infectious disease for people without the chronic disease?d. What is the probability of not having the infectious disease for people with the chronicdisease?
What requirement must be met to be a true random sample? A.The probability of selecting one individual is independent of selecting another individual. B. The probability of being selected stays constant from one selection to another. C. Each individual has an equal chance of being selected for the sample. D. All of the answers are correct. E. Sampling is done with replacement.
The amount of coffee that people drink per day is normally distributed with a mean of 16 ounces and a standard deviation of 5.5 ounces. 35 randomly selected people are surveyed. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X - N b. What is the distribution of ? T - N( c. What is the probability that one randomly selected person drinks between 15.7 and 16.1 ounces of coffee per day?

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