The students in Dr. Water's class have birthdays in each of the four seasons. Thefollowing table and bar graph shows the four seasons, the number of students whohave birthdays in each season, and the percentage (%) of students in each group.FrequencySeasonsSpringSummerAutumnWinter12유10-89 st20Spring20%Number ofstudents89116Proportion ofpopulation24%Summer AutumnBirthdays in each season26%32%18%Winter4According to the results, the proportion of students who have birthdays in Summer toall students is

Seasons : { Spring, Summer, Autumn, Winter } Number of students : { 8, 9, 11, 6 } We have to…

Answered: The students in Dr. Water's class have…

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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The 94 students in a statistics class are categorized by gender and by the year in school. The numbers obtained are displayed below in Figure 1. Gender Male Female Total Year in school Freshman Sophomore Junior Senior 2 9 17 17 13 7 19 22 24 1 23 24 Fig. 1: Summary Graduate Total 2 3 5 31 63 94 (a) What proportion of the statistics students in this class is sophomores? (b) What proportion of the statistics students in this class is male? (c) The data are going to be summarized by computing the conditional distribu- tions of year in school for male and female students. What would be the entry (in proportions) for male sophomores?
Question a. Prepare a cumulative frequency distribution. b. Calculate the cumulative relative frequencies and cumulative percentages for all classes. c. Find the percentage of these adults who possess 7 or fewer credit cards.
Consider the following frequency table representing the distribution of cost of lunch (in dollars). Step 2 of 2: Determine the cumulative frequency for the fourth class. Answer Cost of Lunch (in Dollars) Class 6.1-6.9 7.0-7.8 7.9-8.7 8.8-9.6 9.7-10.5 Frequency 10 15 3 3 14
The following data are the score of 24 students in Midterm Examination. If JM is one of these 24 students and got a score of 80, in what percentile does her score belong?
C.W: The following frequency table represent the number of iPods sold within 30 days. IPods sold No. of days 5-9 3 10 - 14 6 15 - 19 8 20 - 24 8 25 – 29 5 a- Find the class boundaries and class midpoints. b- Do all classes have the same width? If yes, what is it? c- Prepare the relative frequency and percentage distribution columns. d- What percentage of the iPods sold in six days or fewer?
Topic: FREQUENCY DISTRIBUTION DATA GROUPED Below are the durations (in seconds) of songs that were popular. (The Songs are by Timberlake, Furtado, Daughtry, Stefani, Fergie, Akon, Ludacris, Beyonce, Nickelback, Rihanna, Fray, Lavigne, Pink, Mims, Mumidee and Omarion). 448 242 231 246 246 293 280 227 244 213 262 239 213 258 255 257 A. Find the range, mean, median, mode, the variance and the standard deviation. B. Is any duration very different from the others? How is this fact evidenced in each of the Measures of location and dispersion found? C. Calculate the coefficient of variation. What can say about the relationship between the average duration of the songs and the calculated deviation?
The following frequency distribution gives the credit card debt of bank customers. Debt Frequency $0 - $999 100 $1000 - $1999 300 $2000 - $2999 1200 $3000 $3999 1100 $4000 - $4999 600 $5000 $5999 200 Give the class width. (Enter without a dollar sign) O $999 O $1999.50, $2999.50, $3999.50, $4999.50 $1,000 O $4000
The following table reports the sale of umbrellas for 16 quarters. Quarter Year 1 Year 2 Year 3 Year 4 1 12 6. 2 2 3 7 4 1 1 4. 10 What type of pattern exists in the data?
The following frequency distribution gives the credit card debt of bank customers. Debt Frequency $0- $999 100 $1000 $1999 300 $2000 - $2999 1200 $3000 - $3999 1100 $4000 $4999 600 $5000 - $5999 200 Give the class boundaries. $999 O $1999.50, $2999.50, $3999.50, $4999.50 $1999.05, $2999.05, $3999.05, $4999.05 O $1000 « Previous
3. The following tables present the ratings for the top 20 prime time shows for the 2007-2008 season and for the 2017-2018 season. The rating is the percentage of households with TV sets that were turned on during the program. 2007-2008 21.7 15.4 2017-2018 9.7 14.0 10.2 16.1 13.1 10.6 20.8 19.8 15.0 14.2 11.9 11.5 10.4 10.5 16.1 11.6 12.7 15.9 8.2 9.7 12.8 12.6 12.7 9.2 16.6 12.0 12.0 10.8 13.6 11.1 10.9 13.8 9.4 9.2 9.1 9.2 9.0 8.8 A. Use your calculator to find the standard deviation of the 2007-2008 TV ratings (to the hundredths place). C. Compute the range for both seasons. B. Use calculator to find the standard deviation of the 2017-2018 TV ratings (to the hundredths place). 2007-2008 Range_ 2017-2018 Range_ 2A. 2B. D. Use complete sentences to compare the standard deviations and ranges from the two seasons. DO NOT USE DEFINITIONS in your writing. 4. In a poll, respondents were asked if they had ever been in a car accident. 379 respondents indicated that they had been in an…
What is the age distribution of patients who make office visits to a doctor or nurse? The following table is based on information taken from a medical journal. Age group, years Under 15 15-24 25-44 45-64 65 and older Percent of office visitors 15% 5% 25% 15% 40% Suppose you are a district manager of a health management organization (HMO) that is monitoring the office of a local doctor or nurse in general family practice. This morning the office you are monitoring has eight office visits on the schedule. What is the probability of the following? From 2 to 5 patients are 45 years old or older (include 2 and 5). (Hint: Success if 45 or older. Use the table to compute the probability of success on a single trial. Round your answer to three decimal places.)

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