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For the following exercises, consider this scenario: The profit of a company increased steadily over a ten-year span. Thefollowing ordered pairs show the number of units sold in hundreds and the profit in thousands of over the ten-yearspan, (number of units sold, profit) for specific recorded years:
Use linear regression to determine a
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- Sarah was calculating the speeds (mph) of vehicles travelling down Maple Street on two separate days at 9 am for an hour. Below is the data she collected. Wednesday's Speeds: 34,28,24,17,39,44,64,33,27,21,38,40,60,30,25,37,30,25,35,30 Sunday's Speeds: 18,27,34,37,49,55,63,61,48,30,27,17,17,15,26,46,25 1. Create a frequency table for each day. Make sure you look at both days when setting the intervals for your frequency table. Remember that you need to use common intervals for both days to tally the frequency. Wednesday's Frequency Table Speed Interval (mph) Sunday's Frequency Table Speed Interval (mph) Tally Tally Frequency Frequency 2. Create a histogram with appropriate labels for each day using the frequency tables you created in #1. 3. What do you notice about the two histograms? Consider the following questions: Are there any patterns in the speed distribution? Does one day look worse than the other?arrow_forwardSarah was calculating the speeds (mph) of vehicles travelling down Maple Street on two separate days at 9 am for an hour. Below is the data she collected. Wednesday's Speeds: Sunday's Speeds: 34,28,24,17,39,44,64,33,27,21,38,40,60,30,25,37,30,25,35,30 18,27,34,37,49.55,63,61,48,30,27,17,17,15,26,46,25 4) Find the Standard Deviation of each day. Wednesday's Standard Deviation Table X x (x-)²2 n-l Sunday's Standard Deviation Table 7 (x-2)² n-1 2). Sketch Wednesday's Bell Curve with 30 Sketch Sunday's Bell Curve with 30 (x-7)²= x-F (x-7) 2 3. Based on your analysis of the data and standard deviations, which day would you say is the most dangerous day on Maple Street?arrow_forwardIf P(A)= 0.2, P(B)= 0.32 Calculate P(A and B)?arrow_forward
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