17. A researcher surveyed 90 patients at a certain hospital. The histogram below gives the lengthof time patients waited to see a doctor at the hospital. The classes, in minutes, are 5 - 9.9,10 - 14.5, etc., and the vertical axis represents the number of patients.25BIyllemnumber of patients20151050aga siqmaznova ois 3 has 3 szoqqu2 21wollo) si bart 28.0=5 10 15 20 25 30 35 40 45wait time (minutes)(a) Use the histogram to determine the percent of patients that waited less than 15 minutesto see the doctor.(b) Determine the interval that contains the median wait time.

17. The given histogram shows the 90 patients wait time at a certain hospital.

Answered: 17. A researcher surveyed 90 patients…

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter4: Polynomial And Rational Functions

Section4.6: Rational Functions

Problem 87E

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Suppose a graduate student does a survey of undergraduate study habits on his university campus. He collects data on students who are in different years in college by asking them how many hours of course work they do for each class in a typical week. A sample of four students provides the following data on year in college and hours of course work per class: Student Year in College Course Work Hours per Class 1 Freshman (1) 7 2 Sophomore (2) 5 3 Junior (3) 4 4 Senior (4) 4 Think about how close the line Y = –2X + 9 is to the sample points. Look at the graph and find each point’s vertical distance from the line. If the point sits above the line, the distance is positive; if the point sits below the line, the distance is negative. The sum of the vertical distances between the sample points and the orange line is ___?___ , and the sum of the squared vertical distances between the sample points and the orange line is ___?___ . On the graph, place the…
Healthy men aged 21 to 35 were randomly assigned to one of two groups: half received 0.82 grams of alcohol per kilogram of body weight; half received a placebo. Participants were then given 30 minutes to read up to 34 pages of Tolstoy’s War and Peace (beginning at chapter 1, with each page containing approximately 22 lines of text). Every two to four minutes participants were prompted to indicate whether they were “zoning out.” The proportion of times participants indicated they were zoning out was recorded for each subject. The table below summarizes data on the proportion of episodes of zoning out (a) What are the two sample standard deviations? (b) What degrees of freedom does the conservative Option 2 use for two-sample t procedures for these samples? (c) Using Option 2, give a 90% confidence interval for the mean difference between the two groups.
Mr. James, president of Daniel-James Financial Services, believes that there is a relationship between the number of client contacts and the dollar amount of sales. To document this assertion, he gathered the following information from a sample of clients for the last month. Let X represent the number of times that the client was contacted and Y represent the valye of sales ($1000) for each client sampled. Number of Contacts (X) Sales ($1000) 14 24 12 14 20 28 16 30 23 30 c) James would like to require 30 client contacts per month. Based upon the above data, predict what the monthly sales would be for this number of client contacts. What would be your advice to Mr. James about his proposed policy?
5) Given the following data: 0.16, 1.15, 2.22, 1.56, 1.59, .19, 2.11, .35, 1.75, .33, 1.17, 2.18, 1.45, 1.68, 2.33, 3.11, 2.4, 1.55, 1.03, 2.59, 1.17; prepare a Stem and Leaf plot

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