In a recent poll, a random sample of adults in some country (18 years and older) was asked, "When you see an ad emphasizing that a product is "Made in our country," are you more likely to buy ít, less likely to buy it, or neither more nor less likely to buy it?" The resultsof the survey, by age group, are presented in the following contingency table. Complete parts (a) through (c).Purchase likelihood18-34 35-4445-54 55+TotalMore likelyLess likely208315 375 4011299308271277Neither more nor less likely 298 212 153 145808Total536 535 555 5582184...(a) What is the probability that a randomly selected individual is 35 to 44 years of age, given the individual is neither more nor less likely to buy a product emphasized as "Made in our country"?The probability is approximately(Round to three decimal places as needed.)

Introduction: Denote X as the event that the age of a randomly selected individual is between 35 and…

Answered: In a recent poll, a random sample of…

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 programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 90% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n = (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 98% of computers use a new operating system. n= (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. Yes, using the additional survey information from part (b) dramatically increases the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. OC. No, using the additional survey…
A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 90% confident that his estimate is in error by no more than five percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n=0 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 95% of computers use a new operating system. n=0 (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. No, using the additional survey information from part (b) does not change the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. OC. Yes, using the additional survey information from…
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Consumer Reports rated automobile insurance companies and gave annual premiums for top-rated companies in several states. The figure below shows box plots for annual premiums for urban customers (married couple with one 17-year-old son) in three states. The box plots were all drawn using the same scale on a TI-84Plus/TI-83Plus calculator. 1a) Which state has the lowest premium? 2a) Which state has the highest premium? B) Which state has the highest median premium? 1C) Which state has the smallest range of premiums? 2c) Which state has the smallest interquartile range? D) The five-number summaries generated on the TI-84Plus/TI-83Plus calculators for the box plots are given below.Match the five-number summaries to the appropriate box plots.The five-number summary for Texas is summary BLANK. The five-number summary for Pennsylvania is summary BLANK. The five-number summary for California is summary BLANK.
a programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n = b) Assume that a recent survey suggests that about 98% of computers use a new operating system.n = c) Does the additional survey information from part (b) have much of an effect on the sample size that is required?
Jessica Johnson is running for mayor of a small city in Florida. She needs at least 51% of the votes to win. Her campaign wanted to predict whether or not she’s going to win. She hires five people to ask 100 randomly selected voters if they will vote for her. The results are shown in the table. Should Jessica predict that she will win? Poll Number Yes Votes 1 51 2 68 3 58 4 43 5 65 Jessica should predict that she will ["", ""] because ["", "", ""]
A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. Question content area bottom Part 1 a) Assume that nothing is known about the percentage of computers with new operating systems. n=enter your response here (Round up to the nearest integer.) Part 2 b) Assume that a recent survey suggests that about 90% of computers use a new operating system. n=enter your response here (Round up to the nearest integer.) Part 3
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Here are some summary statistics for the numbers of hectares of olives and apples harvested per region, for area that planted those crops. In Region A, there were 36 hectares of olives harvested and 18 hectares of Apples harvested. Relative to its crop, which plant had a better harvest? A: They had equally good harvests relative to their crops. B: The Olives. C: It’s impossible to say without seeing all of the harvest amounts. D: The Apples.
A polling company reported that 37% of 1018 surveyed adults said that rising gas prices are "very harmful." Complete parts (a) through (d) below. a. What is the exact value that is 37% of 1018? The exact value is. (Type an integer or a decimal.) b. Could the result from part (a) be the actual number of adults who said that rising gas prices are "very harmful"? Why or why not? O A. No, the result from part (a) could not be the actual number of adults who said that rising gas prices are "very harmful" because that is a very rare opinion. O B. No, the result from part (a) could not be the actual number of adults who said that rising gas prices are "very harmful" because a count of people must result in a whole number. O C. Yes, the result from part (a) could be the actual number of adults who said that rising gas prices are "very harmful" because the results are statistically significant. D. Yes, the result from part (a) could be the actual number of adults who said that rising gas prices…

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