A school newspaper reporter decides to randomly survey 15 students to see if they will attend Tet (Vietnamese New Year) festivitiesthis year. Based on past years, she knows that 13% of students attend Tet festivities. We are interested in the number of studentswho will attend the festivities.O Part (a)O Part (b)O Part (c)Give the distribution of X.-O(0:0)O Part (d)How many of the 15 students do we expect to attend the festivities? (Round your answer to the nearest whole number.)student(s)O Part (e)Find the probability that at most 3 students will attend. (Round your answer to four decimal places.)O Part (f)Find the probability that more than 2 students will attend. (Round your answer to four decimal places.)

Binomial distribution : - Binomial distribution describes the possible number of events occurs in…

Answered: A school newspaper reporter decides to…

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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Examine the frequency distribution. What is the width of a class in this frequency distribution? Enter your answer as a number, like this: 42
A researcher who studies mental health is interested in the length of time (in days) that a patient stays in the hospital after they have presented to emergency having suicidal ideation. The researcher follows the first 30 patients during the month of January and follows them until each one of them is released. Below is the histogram of the data obtained from the 30 patients. 1. What is the shape of this distribution and please construct a frequency table. Given the shape and type of data, which measure of central tendency would you be more likely to report? Why?
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2. A coach gave her team a test on sit-ups completed in one minute. Using the data collected, the coach constructed the following frequency distribution: Scores 90-99 80-89 70-79 60-69 50-59 40-49 30-39 20-29 10-19 0-9 a. 9 12 17 13 10 7 3 1 What is the percentile score for a raw score of 38? Show your work. b.) The coach wants to take the top 20% of the team and train them for the World Sit-up Championships. What raw score cut-off would be used to choose the team? Show your work. Note: you can't have part of a person on the team.
Rock sole in the Bering Sea 1/2: "Recruitment," the addition of new members to a fish population, is an important measure of the health of ocean ecosystems. Here are data on the recruitment of rock sole in the Bering Sea from 1973 to 2000: Make a stemplot to display the distribution of yearly rock sole recruitment. Round to the nearest hundred (for example, 173 to 2 hundred, and 1702 to 17 hundred) and split the stems.
Last school year, the student body of a local university consisted of 20% freshmen, 21% sophomores, 29% juniors, and 30% seniors. A random sample of 300 students taken from this year's student body showed the following number of students in each class. Freshmen 84 Sophomores 65 Juniors 86 Seniors 65 We are interested in determining whether there has been a significant change in the distribution of class between the last school year and this school year.If the distribution is the same as the previous year, the expected number of freshmen is _____. a. 84 b. 87 c. 60 d. 20

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