A polling company conducts an annual poll of adults about political opinions. The survey asked a random sample of 2216 adults whether they think things in thecountry are going in the right direction or in the wrong direction. 68% said that things were going in the wrong direction. Complete parts a and b belowa) Calculate the margin of error for the proportion of all adults who think things are going in the wrong direction for 95% confidence.ME-(Round to three decimal places as needed.)

Answered: Image /qna-images/answer/298ba72b-1403-4a36-95a1-3cb06f1d9763.jpg

Answered: A polling company conducts an annual…

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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In a recent survey, a group of people were asked if they were happy or unhappy with the state of the country. The data are shown in the contingency table below, organized by political party. What is the relative risk of being unhappy with the state of the country for Democrats? Round your answer to two decimal places. Нарру | Unhappy | Total Republican 152 98 250 Democrat 104 146 250 Total 256 244 500 Provide your answer below:
A consumer research company wants to estimate the average cost of an airline ticket for a round trip within the continental United States. A random sample of 50 airfares was gathered giving an average price of $438. Identify the variable. A. Random sample of 50 airfares C. Consumer research company B. Airline Fare D. Quantitative E. $38
Statistics Question
For each problem, you must state the hypotheses, calculate the test statistic, and explain your decision. The following table reports the relationship between class standing and political orientation for a random sample of 267 college students. a. The table is constructed assuming that class standing is the independent variable. Please add %s in the appropriate position (columns or rows) to describe the pattern of the relationship. b. Is there a statistically significant relationship between these variables?
A class of students took a test. The instructor said that the 75th percentile score was 90 out of 100. What does this mean? A. 90% of the students scored 75 or more on the test. B. 75% of the students scored 90 or more on the test. C. 25% of the students scored 90 or more on the test. D. The high score in the class was (.75)(90).
A student’s test grades are: 85, 75, 100, 90, and 90. On the two questions below, round to the nearest whole number when relevant. Show calculations and clearly report answers to each of the two questions below. a. What is the mean, or average, test grade for this student? b. What is the median test grade?
Determine whether the data set described below is a population or a sample. Explain your reasoning. A survey of 100 randomly selected students at Keller Graduate School of Management that found 15% of the students traveled more than 10 miles to get to campus
Please see picture. Need this asap please and thank you.
A sample of students was taken to determine pulse rate. The data is shown: Pulse rate-beats per minute 54 58 65 68 72 76 80 90 98 Frequency (# of Students) 1 3 6 8 5 3 8 4 2 What is the median?
In a survey of1153 senior citizens in Virginia, 50% said that they wash their hands after attending a sporting event. a. Identify the sample and the population. b. Is the value of 50% a statistic or a parameter?
A study is planned to compare the proportion of teenagers (ages 13–19) who dislike anchovies with the proportion of young adults (ages 20–30) who dislike anchovies. A random sample of 41 teenagers was taken, and 78% of them disliked anchovies. A random sample of 56 young adults was also taken, and 71% of them disliked anchovies. Difference = Teenagers - Young Adults The picture below is the question. Use the information above to help.
your car is more crowded than you think. table 5.8 reports results from a 1969 personal transportation survey on "home-to-work" trips in metropolitan areas. The survey stated that the average car occupancy was 1.4 people. check that calculation.

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