A sample of 100 patients at a local hospital was selected and the length of stay (LOS) in days of eachwas recorded. The boxplot below displays the distribution of these hospital stays.Boxplot of LOS8101214.1618LOSWhich of the following statements must be false?(A) The distribution of length of stay is likely right-skewed.(B) Half of the patients had stays lasting 4 days or less.(C) About 25% of the patients had stays lasting 2 days or less.(D) The mean length of stay is greater than 4 days.(E) The 75th percentile is 11 days.

A boxplot is a graphical representation of statistical data based on a five-number summary. The…

Answered: A sample of 100 patients at a local…

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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A. Classify the following statements as to whether they belong to the area ofdescriptive statistics or inferential statistics ___________________ 4. A study found out that all customers who have received a giftcertificate from a store 75% went back to the store to shop.___________________ 5. The average grade in statistics of 50 students is 83.60. B. At what level are the following variables measured?_______________ 1. The scores of students in a statistics quiz_______________ 2. The birth order of children in the family_______________ 3. Weights of a sample of bags of raw materials for theproduction of a certain product, measured in grams._______________ 4. The natural eye color of a sample of 100 children._______________ 5. The final grade of graduate students taking up Statistics.
ch 11 end. 6: In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles?
what is the mean of the data set?
The distribution of yearly income of people (thousand $) was as follows: Class <31 31-40 41-50 51-60 61-70 71-30 81-90 91-100 101-110 111-120 Frequency 7 13 5 12 23 7 10 4 14 3 Find the mean, median, and mode for the given data
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The following data said shows the bank account balance for a random sample of 17 IRSC students. Round solution to two decimal places if necessary. What is the mean of this data set? Mean= What is the median of this data set? Median= What is the mode of this data set if no modes exist type DNE. if multiple modes exist enter the values in a comma separated lists Mode=
Help. a. About what percent of women in North Arerica are between 58 and 68.5 inches tall? b. About what percent of women in North America are less than 65 inches tall? c. In what range do the middle 99.7% of women's height lie? d. About what percent of women in North America are at least 61.5 inches tal?
Is there a relation between incidents of child abuse and number of runaway children? A random sample of cities (over 10,000 population) gave the following information about the number of reported incidents of child abuse and the number of runaway children. (Reference: Federal Bureau of Investigation, U.S. Department of Justice.) City 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Abuse cases 113 33 41 60 52 99 31 56 15 67 106 59 45 74 84 Runaways 648 188 285 687 421 590 284 277 162 473 600 432 317 580 592 Use a 1% level of significance to test the claim that there is a monotone-increasing relationship between the ranks of incidents of abuse and number of runaway children. (a) Rank-order abuse using 1 as the largest data value. Also rank-order runaways using 1 as the largest data value. Then construct a table of ranks to be used for a Spearman rank correlation test. City Abuse CasesRank x RunawaysRank y d = x - y d2 123456789101112131415 Σd2 = (b) What is the level of…
7. A sample of 12 students participated in an online tutoring program in mathematics. Each student took a pretest before the program started, and a posttest after completely the program. Following are the scores. Student 1 4 5 6 7 9 10 11 12 Pre test 73 76 45 77 65 44 51 53 78 70 46 79 Post Test 83 89 57 79 75 39 62 76 79 39 94 Can you conclude that the median scores differ between the pretest and the posttest? Use the a = 0.05 level of significance. 00 ino
pls answer thankyou
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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.

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