A poll of 120 city residents found that 30 had visited the new museum, and that 80 had been to the new park. If it appeared that going to the park andgoing to the museum were independent events, how many of those polled had been to both?ParkO 20O 15MuseumYes No TotalHint: P(went to park and went to museum) divided by total people surveyedO 10Yes ??No8040Total 30 90 120OIt cannot be determined.

Let A and B are two events and these two events are said to be independent, if the happening of…

Answered: A poll of 120 city residents found that…

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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Similar questions

If there are 11 people in the first sample and 10 people in the second sample, the degrees of freedom for the first sample is type your answer... and type your answer... for the second sample.
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 list of the over 2300 Henry Clay high School is compiled. from that list 250 names are randomly chosen and given a survey to complete. of those surveyed 72% said they intended to attend college after completing high school what would the 250 students surveyed would be an example of?
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A Statistics instructor wishes to know the average age (in month) of his 200 students. He decides to choose 25 students from the class and ask them for their age. All 200 names are put in a hat and 25 names are then chosen at random (without replacement). The average age of the students chosen is observed to be 231 months. The group of 25 students is known as what?
A group of 91 students were surveyed about the courses they were taking at their college with the following results:39 students said they were taking Math.47 students said they were taking English.38 students said they were taking History.14 students said they were taking Math and English.16 students said they were taking Math and History.27 students said they were taking English and History.11 students said they were taking all three courses.How many students took none of the courses ?
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There are 160 questions on a test, and they are all multiple choice questions with four possible answers. For each question, only one answer is correct. Find the mean number of correct answers for someone who make random guesses for all of the questions.
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The nonprofit group Public Agenda conducted telephone interviews with three randomly selected groups of parents of high-school children. There were 202 black parents, 202 Hispanic parents, and 201 white parents. The sample survey asked the parents to respond to the statement, "A college education has become as important as a high school diploma used to be." Here are the counts of responses: Strongly agree Somewhat agree Somewhat disagree Strongly disagree TOTAL Black parents 154 27 11 10 202 Hispanic White parents 144 37 13 8 202 parents 125 50 18 8 201 Write a brief report on the similarities or differences among the three groups of parents in their attitudes towards the importance of a college education. Include a graph or graphs and a test of significance.
A survey of freshmen revealed the following information: •24 signed up for a math class. • 28 signed up for a biology class. •20 signed up for both biology and math. •2 signed up for neither biology nor math. How many freshmen in total were surveyed? 0 34 O Not enough information were given. O 54 O 74
A survey was taken on course selection and gender. The results are represented in the table below. Воys Girls ТОТAL Band 27 17 44 Team Sports 64 46 110 Neither 13 22 ТОТAL 104 72 176 What percentage of those surveyed are girls? Round to the nearest percent. % are girls.

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