Jenny has two ways to get from her home in Norco to her office in Los Angeles. One is on the San Bernardino Freeway and the other on the Pomona Freeway.Recently, she added a lane to the San Bernardino Freeway. Jenny wants to determine if it is now faster to take the San Bernardino Freeway than the PomonaFreeway. She selected a random sample offiftfettheir drives on the San Bernardino Freeway and a random sample offiftefenis trips on the Pomona Freeway. Thetwo samples were chosen separately, so the selection of the San Bernardino Freeway trips did not affect the selection of the Pomona Freeway trips. Jennyrecorded the runs (in minutes) on each of the two samples. The following table provides the data, the sample means, and the sample standard deviations.SB Expressway 62, 75, 79, 76, 69, 73, 68, 63, 65, 61, 64, 70, 60, 71, 63pomona highway 77, 79, 65, 75, 79, 72, 66, 80, 72, 68, 71, 65, 80, 77, 71Send data to calculatorSend data to Exceltours in minutesindependent samples(to) Are the two run samples independent or paired (dependent) samples? Choose the best answer.paired (dependent) samplesXsample mean sample standard deviation367.973.16.05.5(b) Jenny wants to use the data to determine if the mean drive time on the San Bernardino Freeway is less than the mean drive time on the PomonaFreeway. She assumes that both populations follow approximately a normal distribution and that the population variances are equal.Choose the appropriate test statistic to perform the hypothesis test. Then calculate that statistic. Carry intermediate calculations to three or moredecimal places. Round your answer to three decimal places. (If necessary, you can refer to a list of formulas.) pomona mynwaySend data to calculatorSend data to Excel(to) Are the two run samples independent or paired (dependent) samples? Choose the best answer.independent samplespaired (dependent) samplesXZ =(b) Jenny wants to use the data to determine if the mean drive time on the San Bernardino Freeway is less than the mean drive time on the PomonaFreeway. She assumes that both populations follow approximately a normal distribution and that the population variances are equal.ŚChoose the appropriate test statistic to perform the hypothesis test. Then calculate that statistic. Carry intermediate calculations to three or moredecimal places. Round your answer to three decimal places. (If necessary, you can refer to a list of formulas .)youO It is not clear which test statistic to use.XŚ

Given :Random sample of trips via S.B. freeway ( n1 ) = 15Sample mean time travel via S.B. freeway (…

Answered: Send data to calculator Send data to…

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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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? FORECAST AND ACTUAL TEMPERATURES The table lists actual high temperatures and the high temperatures that were previously forecasted for these same days. The table includes data for ten different days near the author’s home. What does the result suggest about the accuracy of five-day predicted high temperatures?
SOLVE IN EXCEL PLEASE STEP BY STEP INSTRUCTIONS: Calculate the measures of central tendency (mean, median, and mode) and the measures of dispersion (range, mean, standard deviation, and variance) in the examples: 6. Find the range of spread and the population standard deviation of the following data: 3, 0, 4, 1, 2, 2, 1, 3, 3, 2, 2, 2, 3, 1, 1, 2, obtained during experimental measurements. Tip: We write down in a table the given data arranged in order ascending, the calculations and the results obtained: 6543210 0 1 2 3 4 0 Σ fl 1 4 =16 2 The arithmetic mean is: X = 0= 1 16 1 16 3 El=1*ifi 71 The population standard deviation is: The range of the dispersion is: T = Xmax-Xmin = 71 |2|\,(xr− x)?fi Σ= = x1/1 X 0 4 2 X₁ -2 2 (x₁-x)² 4 Σ= (x₁-x)²/1 Σ-
Which variable is most likely to be an independent variable? reading test score stress level running speed weight loss forms of therapy
Which correlation coefficient indicates that you have the strongest connection between the variables in the data? O r= 0.88 O r= -0.89 O r= 0.93 O r= -0.95 ent.mastensonnect.com/ Ipe bese to search
Weight (lbs.) 173 184 194 214 168 220 188 188 207 167 217 Systolic Blood Pressure 132 143 153 162 154 168 137 149 159 128 1 1. The sample correlation coefficient is _____________
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
The total cost for a production process is $600 minus two times the number of units produced. The mean and variance of the number of produced are 200 and 20, respectivelySo, the mean and variance of the total cost are A.560,1000 B.80,200 C.180,400 D. 200,600
Based on the hourly incomes (in US dollars) of employees in two different branches at Citibank, which set of incomes has the most variability? You do not have to calculate anything, but you can if you want to. Just take a look at the incomes and determine which set has the most variability based on the definition.
3. The data in the table shows the mileage that students commute to school. B. Find the weighted mean. Miles Midpoint Frequency 10 - 14 12 8 15 - 19 17 C. Draw a histogram for the data. 20 - 24 22 9 25 - 29 27 21 30 - 34 32 7 A. How many students are in the class?
1. Compare the appropriate measure of center based on the shapes of the distributions. Explain your choice.2. Compare the appropriate measure of variability based on the shapes of the distributions. Explain your choice. 3. Which company is better to work for if you are an average worker?
The total cost for a production process is $600 minus two times the number of units produced. The mean and variance of the number of produced are 200 and 20, respectively. So, the mean and variance of the total cost are O A. 600, 200 O B. 1000, 560 O C. 200, 8O O D. 400, 180
Assume that you have paired values consisting of heights (in inches) and weights (in lb) from 40 randomly selected men. The linear correlation coefficient r is 0.567. Find the value of the coefficient of determination. What practical information does the coefficient of determination provide? Question content area bottom Part 1 Choose the correct answer below. A. The coefficient of determination is 0.321. 32.1% of the variation is explained by the linear correlation, and 67.9% is explained by other factors. B. The coefficient of determination is 0.679. 67.9% of the variation is explained by the linear correlation, and 32.1% is explained by other factors. C. The coefficient of determination is 0.321. 67.9% of the variation is explained by the linear correlation, and 32.1% is explained by other factors. D. The coefficient of determination is 0.679. 32.1% of the variation is explained by the linear correlation, and 67.9% is…

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