The graph shows the distribution of the lengths (inseconds) of videos on a popular video-streaming site.The distribution is approximately Normal, with a meanWhat percentage of videos on the streaming site arebetween 264 and 489 seconds?0.15%of 264 seconds and a standard deviation of 75seconds.49.85%95%Streaming Videos99.7%3630114189264339414489564Mark this and returnSave and ExitNextSubmitPrevious ActivityNext Activity

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Answered: The graph shows the distribution of the…

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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Find Mean and Standard Deviation (Use standard deviation formula). Data Set ((-16, 0, 16, 15, 25))
The data represent the time, in minutes, spent reading a political blog in a day. Construct a frequency distribution using 5 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency? 2 18 11 16 19 1 14 14 14 14 19 1 2 19 15 Complete the table, starting with the lowest class limit. (Simplify your answers.) Relative Cumulative Class Frequency Midpoint Frequency Frequency
Use the frequency distribution to create a histogram with single class values (a bar for 1, a bar for 2, etc.) that displays the data. Number of times fast food ordered number of students (frequency) 1 9 2 8 3 2 4 5 5 6 Total 30
The average fruit fly will lay 421 eggs into rotting fruit. A biologist wants to see if the average will be lower for flies that have a certain gene modified. The data below shows the number of eggs that were laid into rotting fruit by several fruit flies that had this gene modified. Assume that the distribution of the population is normal. 429, 426, 402, 401, 393, 424, 426, 415, 416, 422, 414, 428 What can be concluded at the the αα = 0.05 level of significance level of significance? For this study, we should use Correct The alternative hypothesis would be: H1:H1: Correct Correct Correct The test statistic Correct = (please show your answer to 3 decimal places.) Based on this, we should Correct the null hypothesis. Thus, the final conclusion is that ... Correct
The data represent the time, in minutes, spent reading a political blog in a day. Construct a frequency distribution using 5 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency? ... Class 38 0 25 16 32 39 13 38 24 30 15 15 7 21 27 10 34 0 Complete the table, starting with the lowest class limit. (Simplify your answers.) 19 23 Relative Cumulative Frequency Frequency Midpoint Frequency
The decrease in cholesterol level (in mg/dL) for ten individuals are listed below. Calculate the range of the data. 16 22 17 18 22 19 21 20 18 23
The table lists weights (pounds) and highway mileage amounts (mpg) for seven automobiles. Use the sample data to construct a scatterplot Use the first variable for the x-axis. Based on the scatterplot, what do you conclude about a linear correlation? 2425 Weight (Ib) Highway (mpg) 2725 2875 3480 4070 4090 3125 34 33 30 25 24 36 31 Which scatterplot below shows the data? O A. OB. C. O D. 40- 40- 40 20+ 2000 20- 2000 Weight (Ib) 20어 2000 20- 2000 Weight (Ib) 5000 5000 5000 5000 Weight (Ib) Weight (Ib) Is there a linear relationship between weight and highway mileage? O A. No, there appears to be no relationship. O B. Yes, as the weight increases the highway mileage increases. O C. No, there appears to be a relationship, but it is not linear. Click to select your answer. 4:21 PM a 17 梦 * v 6/4/2021 W 0 門 e Type here to search Chp ins prt sc delet fg ho ト f8 144 f6 10 f5 f4 IOI esc back & #3 $4 4 T. 6, 00 %24 (6 d) AamH 3. (B dw) Am
A professor went to a website for rating professors and looked up the quality rating and also the "easiness" of the six full-time professors in one department. The ratings are 1 (lowest quality) to 5 (highest quality) and 1 (hardest) to 5 (easiest). The numbers given are averages for each professor. Assume the trend is linear, find the correlation, and comment on what it means. Calculate the correlation. r = (Round to three decimal places as needed.) Comment on the meaning of the correlation. Choose the correct interpretation below. OA. The professors that have high easiness scores tend to also have low quality scores.. OB. Being "easy" as a professor causes students to regard the professor as having a higher quality. OC. The professors that have high easiness scores tend to also have high quality scores. OD. Being "easy" as a professor causes students to regard the professor as having a lower quality. Quality Easiness D 4.7 3.7 4.7 3.1 4.2 3.5 4.2 2.6 3.9 1.9 3.5 1.8
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Construct a scatter plot from the given points and describe the correlation.
A professor went to a website for rating professors and looked up the quality rating and also the "easiness" of the six full-time professors in one department. The ratings are 1 (lowest quality) to 5 (highest quality) and 1 (hardest) to 5 (easiest). The numbers given are averages for each professor. Assume the trend is linear, find the correlation, and comment on what it Quality 4.6 Easiness O 3.8 4.7 3.2 means. 4.4 3.2 4.2 3.8 2.6 1.8 3.6 2.2 Calculate the correlation. 3D(Round to three decimal places as needed.)

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