2.The following table shows the income distribution for two groups of people in a country:those who declare to belong to a faith, and those who declare to be free thinkers.Income bracketMiddle132782225ReligiousoutlookFaith believerFree thinkerLower79401241Upper4527813(a)A person is randomly selected from the group, find the probability that this personis a(i)free thinker.(ii)free thinker given that he/she has middle income.(iii) faith believer or he/she has lower income.(b)Are the events "Free thinker" and "Middle income" independent? Explain youranswer. (Note: Round the probabilities to two significant figures)

The above table shows the income distribution for two groups of people in a country: those who…

Answered: (a) A person is randomly selected from…

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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A scientist measured the speed of light. His values are in km/sec and have 299,000 subtracted from them. He reported the results of 25 trials with a mean of 756.21 and a standard deviation of 109.65. a) Find a 95% confidence interval for the true speed of light from these statistics. b) State in words what this interval means. Keep in mind that the speed of light is a physical constant that, as far as we know, has a value that is true throughout the universe. c) What assumptions must you make in order to use your method?
18. Say that you were asked to analyze each of the cases described below. (No need to solve the problems.) For each case given in column one, in column two indicate the box which procedure you would use (pick/select the appropriate number from the list below the box as the type of test), in column three the test statistic (z or t, or n/a if neither), and, in column four if the test statistic is t test statistic, the number of degrees of freedom, otherwise n/a. A procedure may be used more than once or not at all. Туре of Test (write the number from the list below) Test statistic, z or t? If t, then df? Case a) Case b) 1 sample 1 sample Difference of means 1. Proportion 2. Mean – 3. -independent samples test matched pairs (paired data) 4. Mean of differences – Case a: A supermarket chain wants to know which of two merchandise display methods is more effective. They randomly assign 15 stores to use display type A and 15 others to use display type B, then collect data about the number of…
The probability that stock A will rise in price is 0.63 and that stock B will rise in price is 0.37. Further, if stock B rises in price, the probability that stock A will also rise in price is 0.68. What is the probability that at least one of the stocks will rise in price? Note: Round your answer to 2 decimal places. Are events A and B mutually exclusive? multiple choice 1 Yes because P(A | B) = P(A). Yes because P(A ∩ B) = 0. No because P(A | B) ≠ P(A). No because P(A ∩ B) ≠ 0. Are events A and B independent? multiple choice 2 Yes because P(A | B) = P(A). Yes because P(A ∩ B) = 0. No because P(A | B) ≠ P(A). No because P(A ∩ B) ≠ 0.
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When looking at the association between the events “likes donuts” and “owns a dog,” if the events are independent, then the probability: P (owns a dog| likes donuts) is equal to what expression? Explain your answer.
GMC automobiles come in the following colors and are manufactured in these percentages. White(.46), Black (.22), Red (.09), Grey (.11), Blue (.12) If I select 2 cars at random, what is the probability that the two cars are both white? (A)..92 (B).2116 (C).23 (D) .7084 (E) none of these
Joanne estimates that she has a 85% chance of passing Biology and a 95% chance of passing English. Assume that {passing English} and {passing Biology} are independent events. What is the probability that Joanne will pass only one of her courses? 99% 90% 20% 18.5% acer
2 questions, first one is (a) and the second one is (b)
At the close of the stock markets on a day in 2013, there were 5905 companies listed with a certain stock exchange. On this day, the probabilities of advancing, declining, and unchanged company stocks appears in the table for the two exchanges. Find the probability an advancing stock was listed on Exchange 1. Percentage of Probability of Probability of Companies Probability the Stock Stock Stocks Remain Exchange Exchange 1 Exchange 2 Declining 0.267 Listed Advancing Unchanged 0.041 54.8% 0.684 45.2% 0.657 0.297 0.046 ..... The probability that an advancing stock was listed on Exchange 1 is (Round to three decimal places as needed.)
Does this answer look like I calculated correctly. The question is in a certain population of women 4% have had breast CA, 20% are smokers, and 3% are smokers and have had breast CA. A woman is selected at random from the population. What is the probability that she has had breast CA or smokes or both.

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