You have just recorded the waiting times for a random sample of 50 customers who visited Elmo's Pizza Shop. The following table givesthe frequency distribution of waiting times (in minutes) for these customers.Waiting Timef10 to less than 16616 to less than 221022 to less than 281828 to less than 34834 to less than 40740 to less than 461The variance of waiting times, rounded to two decimal places, is:

Calculate Sample Variance (S^2) from the following grouped data Class Frequency 10 - 16 6 16…

Answered: You have just recorded the waiting…

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 grades for 20 students on the most recent exam are given in the data table below. Round your answers to 2 decimal places as needed 46 71 41 94 50 47 85 86 98 72 82 40 47 80 44 89 61 66 81 96 Mean = Median = Standard deviation = Minimum score = Highest score =
A food truck owner recorded the temperature at noon, in degrees Fahrenheit, and the number of bowls of soup sold during the lunch hour for a random sample of 5 days. The data are shown in the following table. Temperature (degrees Fahrenheit) 57 75 43 68 67 Number sold 17 12 20 8 13 The mean temperature of the sample is 62 degrees Fahrenheit, and the mean number sold is 14. What is the correlation between the temperature and the number sold? A -0.85 B -0.68 0.68 D 0.73 E 0.85
You may need to use the appropriate technology to answer this question. In order to determine whether or not a driver's education course improves the scores on a driving exam, a sample of 6 drivers were given the exam before and after taking the course. The results are shown below. Assume the population of differences is normally distributed. Driver Score Beforethe Course Score Afterthe Course 1 84 87 2 90 88 3 94 91 4 78 77 5 86 93 6 80 83 Let d = Score After − Score Before. (a) Compute the test statistic. (Round your answer to three decimal places.) (b) Using ? = 0.05 and the p-value approach, test to see if taking the course actually increased scores on the driving exam. Calculate the p-value. (Round your answer to four decimal places.) p-value = What is your conclusion? We do not reject H0. There is no significant difference.We do not reject H0. There is a significant difference. We reject H0. There is no significant difference.We reject H0. There is…
You wish to determine if there is a linear correlation between the age of a driver and the number of driver deaths. The following table represents the age of a driver and the number of driver deaths per 100,000. Use a significance level of 0.01 and round all values to 4 decimal places. Driver Age 65 69 48 37 49 27 62 64 Ho: p = 0 Ha: p = 0 r= Find the p-value p-value= Number of Driver Deaths per 100,000 22 22 34 Find the Linear Correlation Coefficient The p-value is Greater than a Less than (or equal to) a 23 28 20 The p-value leads to a decision to O Do Not Reject Ho O Accept Ho O Reject Ho 33 33 The conclusion is O There is a significant negative linear correlation between driver age and number of driver deaths. There is a significant linear correlation between driver age and number of driver deaths. O There is insufficient evidence to make a conclusion about the linear correlation between driver age and number of driver deaths. O There is a significant positive linear correlation…
The popularity of computer, video, online, and virtual reality games has raised concerns that they might negatively affect youth. The data in this exercise are based on a recent survey of 14- to 18-year-olds in Connecticut high schools. The table displays the grade distributions of boys who have and have not played video games. Played games Never played games A's and B's: C's: A's and B's D's and F's: 744 210 Grade Average C's 445 140 D's and F's Find the conditional distribution of grades (the response variable) for nonplayers. Give your answers to two decimal places. 197 84 % % %
The durations (minutes) of 26 electric power outages in the community of Sonando Heights over the past five years are shown below. 36 49 23 68 26 12 54 13 50 4 14 42 42 101 31 18 13 51 22 3 17 26 91 25 13 20 Click here for the Excel Data File (a) Find the mean, median, and mode. (Round your answers to 2 decimal places.)
ASAP

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