The number of people arriving for treatment at an emergency room can be modeled by a Poissonprocess with frequency of four individuals per hour. Suppose that you are making observations in anemergency room for 4 hours.How many patients do you expect to arrive during a 30-minute period?Select one:a) 8b) 16c) 4d) 2I

Answered: The number of people arriving for…

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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Q4A The British Department of Transportation studied to see if people avoid driving on Friday the 13th. They did a traffic count on a Friday and then again on a Friday the 13th at the same two locations ("Friday the 13th," 2013). The data for each location on the two different dates is in following table: Table: Traffic Count Dates 6th 13th 1990, July 139246 138548 1990, July 134012 132908 1991, September 137055 136018 1991, September 133732 131843 1991, December 123552 121641 1991, December 121139 118723 1992, March 128293 125532 1992, March 124631 120249 1992, November 124609 122770 1992, November 117584 117263 Let μ1 = mean traffic count on Friday the 6th. Let μ2 = mean traffic count on Friday the 13th. Estimate the mean difference in traffic count between the 6th and the 13th using a 90% level. (i) Determine the sample mean of differences x⎯⎯di Determine the sample mean of…
The following data represent the smoking status by level of education for residents 18 years old or older living in a certain country from a random sample of 999 residents. Complete parts (a) and (b).
Figure 1: Distribution of candidates who were enrolled for the MBA entrance exam and the candidates (out of those enrolled) who passed the exam in different institutes: Candidates Enrolled = 8550 P 16% 22% 12% 15% 8% R 10% 17% Sawaal?com Candidates who Passed the Exam = 5700 P 18% 12% 15% 17% 9% R 16% 13% a) What percentage of candidates passed the Exam from institute T out of the total number of candidates enrolled from the same institute? b) Which institute has the highest percentage of candidates that passed to the candidates enrolled? c) By how many candidates, does the number who passed institutes S and P together exceeds the number of candidates enrolled from institutes T and R together? d) What is the percentage of candidates passed to the candidates enrolled for institutes Q and R together? e) What is the ratio of candidates passed to the candidates enrolled from institute P? g) What makes the candidate fail the exam?
A researcher found that the two groups (n=25 in each group) they tested were significantly different from each other with a t-value of 2.91, which has a corresponding p-value of p=.06. Report the findings in APA number format.
The 18 faculty members in a college Economics department range in age from 32 to 68 as presented in the step plot below. If the oldest faculty member retires and is replaced by a 26-year-old, the median age will: 324899 403569 534789 9 638 O decrease by 2 years. O stay the same. O increase by 2 years. increase by 4 years.
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The following data were collected in a survey of 8th graders and summarize their cell phone status. What proportion of the 8th graders have cell phones? No cell phone Conventional cell phone Smartphone Boys 50 65 33 Girls 31 76 27
A food quality inspector records the freezer temperature of a random sample offreezers from 11 supermarkets and record the temperatures (in degrees Celsius) as follows−12, −16, 0, −4, 5, − 9, − 9, − 7, − 5, 3, − 10Evaluate the interquartile range for this data.
A psychologist believed that as children get older, they engage in more “inactive activities” such as playing computer games, watching TV and surfing the internet. She collected data from 10 children. She recorded the age of each child and the amount of activity (in hours) the child engaged in per week. Age Activity 7 4.3 9 3.2 10 1 13 1.5 12 1.2 15 0.8 9 3 12 4 15 1.5 14 1.9 Using excel, obtain a scatterplot of the data. Discuss the relationship between age and activity based on the scatterplot. Using excel, obtain the simple linear regression linear regression line predicting activity from age. Interpret the intercept and slope of the regression line. By hand, predict the amount of activity for age = 14. By hand, calculate the residual for age = 14 Using excel output, test the null hypothesis that the slope coefficient is zero using the p-value approach. Write one sentence interpreting the meaning of this result. Make sure to report the test statistic…
A group of 40 students in a library was sampled and the type of laptop they were using was examined. It was found that 16 were using HP, 10 were using Lenovo, 6 were using Dell, 5 were using Microsoft, and 3 were using Apple. a. Use the given information to complete the following table: Laptop Type Frequency Relative Frequency HP % Lenovo c. What proportion of the students use HP? b. How many degrees will the segment representing "Lenovo" have on a pie chart? % d. What is the relative frequency for Apple? Dell Microsoft Apple
tion 1 Consider the following data set: et red 3, 4, 2, 2, 1, 1, 5, 4, 1, 2, 3, 4, 3, 2, 5. Find the median d out of move flag Select one: a. 5 b. 4 С. 2 d. 3
a) Construct a frequency distribution table. Take 20 as the lowest limit of the first class and 10 as the width of each class. b) Develop the relative frequency for the above data. c) Develop a cumulative frequency for the above data.

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