15. A company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected, and their times (in seconds) to access the website with the old and new designs were recorded. To compare the times, they computed new website design time - old website design time. The results are shown here. User Old Website Design New Website Design A 30 25 В 45 30 25 20 32 30 E 28 27

15. A company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected, and their times (in seconds) to access the website with the old and new designs were recorded. To compare the times, they computed new website design time - old website design time. The results are shown here. User Old Website Design New Website Design A 30 25 В 45 30 25 20 32 30 E 28 27

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 company is researching the effectiveness of a new website design to decrease the time to access a website. Five website users were randomly selected, and their times (in seconds) to access the website with the old and new designs were recorded. To compare the times, they computed new website design time − old website design time. The results are shown here. User Old Website Design New Website Design A 30 25 B 45 30 C 25 20 D 32 30 E 28 27 a) What is the value of the test statistic? A) 2.256B) 1.895C) 3.747D) 2.447 b) For a 0.01 significance level, what is the critical value? A) −2.256B) −1.895C) −3.747D) −2.447 c) For a 0.01 significance level, what is the decision regarding the hypothesis that the training was effective in improving customer relationships? A) Reject the null hypothesis and conclude that the new design reduced the mean access times.B) Reject the null hypothesis and conclude that the new design did not reduce the…
Consider the women's 100-yd dash (and the subsequent 100-m dash) in the Olympics since records have been kept. Determine the best way to combine all data and depict the data. Choose the correct answer below. O A. A line graph would be the best way to show all of the data over time, but some measurements would have to be converted to display the 100-yd and 100-m on the same graph. OB. A scatterplot would show the relationship between the 100-yd dash and the 100-m dash. O C. A stem and leaf plot would be the best way to show all of the data grouped by race times. O D. A histogram would show all of the data by comparing each year. The units of distance would not matter. Click to select your answer. 2:50 PM P Type here to search 3/10/202 Prt Scn End F10 PgUp Home F7 DII B F5 F6
You put n = 20 rats in a cage that is in a room with a 65-degree temperature. The next day you put them in a cage with a 70-degree temperature. On the final day of the study you put them in a cage with a 75-degree temperature. For each of the three days, you measure how many minutes of each hour they spent running on their exercise wheel. To compare the time they spent running on the wheel between the three different days (in other words, between the three different temperatures of 65, 70, and 75 degrees), what kind of hypothesis test should you do? One-Factor, Independent-Measures ANOVA One-Factor, Repeated-Measures ANOVA Correlation/Regression Chi-Square Goodness of Fit
An outbreak of the deadly Ebola virus in 2002 and 2003 killed 91 of the 95 gorillas in 7 home ranges in the Congo. To study the spread of the virus, measure " distance" by the number of home ranges separating a group of gorillas from the first group infected. Here are data on distance and number of days until deaths began in each later group: Distance xx 2 5 4 4 4 6 Days yy 4 21 29 40 47 49 Use a calculator or software to find the following values. (a) Find the mean and standard deviation of xx. MEAN: STANDARD DEVIATION: (b) Find the mean and standard deviation of yy. MEAN: STANDARD DEVIATION: (c) Find the correlation rr between xx and yy. r:
plese gives step by step on how to solve the problem shown in the figure.
The time that it takes for a person to complete a minor task was measured with and without a distraction (television show or movie). The difference in time, given in seconds, is shown below. Difference in Time to Complete Task 3.4 32.8 28.1 31.8 62.0 65.8 92.4 48.3 51.4 28.9 68.2 75.1 78.0 83.1 56.0 72.6 87.0 92.1 61.1 53.0 What type of graph would be the most useful to show the spread of the data collected? histogram bar graph O pie graph
Two varieties of corn are grown in 4 different locations. Each location provides a value in pounds for each variety.The table below lists the results. Find the standard error for the difference in the production of the two corn varieties to two decimal places. Variety 1 Variety 2 difference location 1 32.1 34.5 -2.4 location 2 30.6 32.6 -2.0 location 3 33.7 34.6 -0.9 location 4 29.7 31.6 -1.3 mean value 31.53 33.18 -1.65 standard deviation 1.76 1.72 0.68 1.23 0.75 0.34 0.98