Mathematics, 20.07.2020 01:01 butterflycc
1. Based on the info from the presentation: Which company do you think makes the longest-lasting (and better) cell phone? Explain your thinking. (1 point) 2. Complete the table to summarize each student’s point of view: (2 points, 1 point for each) Student 1 Student 2 3. a. Pick one of the two companies and sketch out a normal curve for it. Be sure to label it and use vertical lines to locate the mean and 1 standard deviation on either side of the mean. (2 points) b. What is the range of values for each company to be within 1 standard deviation? (2 points) c. What is the range for the 68-95-99.7 distribution? (4 points) d. It may not make sense for the company’s data to be represented by a normal distribution. Look at the three graphs below represented by a curve and the x-axis. Which one is not possible? Why? (1 point) 4. The students each buy one cell phone and perform their own experiments to wear out the batteries. Here are the data: a. Based on their sample data, which of the cell phones is better? (1 point) b. In order to properly compare the data, calculate the z-scores for each sample data point. (2 points) c. Use a statistical calculator or a standard normal chart to find the percentile for each z-score you found in part b above. (2 points) d. Now who do you think got the better cell phone (with longer battery life) and why? (1 point) 5. a. Is it problematic to decide that one company is better than another based solely on the students' sample data? Explain. (1 point) b. How would you improve the students’ experiment if you were going to conduct it yourself? (1 point)
Answers: 3
Mathematics, 21.06.2019 23:50
4. (10.03 mc) the equation of line cd is y = −2x − 2. write an equation of a line parallel to line cd in slope-intercept form that contains point (4, 5). (4 points) y = −2x + 13 y = negative 1 over 2 x + 7 y = negative 1 over 2 x + 3 − 2x − 3
Answers: 2
Mathematics, 22.06.2019 00:20
Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.
Answers: 2
1. Based on the info from the presentation: Which company do you think makes the longest-lasting (an...
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