A group of seniors decide to spend their spring break awayfrom home, attending at least one major event. Thefollowing table summarizes their preferences.Stay in stateTravel out ofstate86.89%64.63%54.73%Attend aconcert46%214391What percent want to attend a concert, given that theywant to travel out of state?Attend afestival18659

attend a concert attend a festival total stay in state 214 186 400 travel out of state 391 59…

Answered: A group of seniors decide to spend…

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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520 students from UC Berkeley are surveyed about whether they are from Northern California, Southern California, Central California, or from another state or country. A researcher is interested in seeing if the proportion of students from each of the four regions are all the same for all UC Berkeley students. The table below shows the outcome of the survey. Fill in the expected frequencies. Frequencies of UCB Students' Home Towns Outcome Frequency Expected Frequency Northern California Southern California Central California Out of State 189 152 170 1000
A politician wants to know what percentage of the voters support her position on the issue of political dynasty. What size voter sample should be obtained to determine with 90% confidence the support level to within 4%? O a. 423 O b. 25 O c. 1691 d. 600 e. 21
The data set shows the GDP per people in 24 countries, along with the proportion of person that have a linkedin social media account. A. the covariance is ___ percentage dollars. be careful of the units. round to the nearest integer. B. r= ___ c. Choose the correct answer below. A. There is no clear relationship between the GDP and LinkedIn accounts. B. There is a strong positive relationship between the GDP and LinkedIn accounts. C. There is a weak positive relationship between the GDP and LinkedIn accounts. D. There is a strong negative relationship between the GDP and LinkedIn accounts. GDP (PPP) Social Media Usage (%) 6,905 89 17,863 87 5,114 86 9,989 86 6,121 83 6,593 83 13,899 81 4,013 83 16,146 75 4,696 79 16,470 76 19,857 72 18,155 71 3,501 74 19,526 75 8,007 76 4,033 73 13,651 69 16,990 68 6,642 70 6,447 70 6,434 68 13,052 64 10,874 47
4a. Suppose that 35% of senior citizens have a social media account. If we survey 150 senior citizens, what is the mean of the sampling distribution? Group of answer choices 35.0% 52.5% 40.0% 70.0%
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 95% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 33% of air passengers prefer an aisle seat. n3= (Round up to the nearest integer.)
You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)
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conducted this year indicates that 35% planned to provide a holiday gift to their employees. Suppose the survey results are based on a sample of 85 business owners. a. How many business owners in the survey planned to provide a holiday gift to their employees this year? Round your answer to the nearest whole number. 30
Multiple Choice Question A study took a random sample of adults and asked them about their bedtime habits. The data showed that people who drank a cup of tea before bedtime were more likely to go to sleep earlier than those who didn't drink tea. What was the population being studied? A. All adults that drink tea before bed B. All Adults C. All People D. All adults that don't drink tea

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