Question Answered step-by-step Does using a cell phone while driving make an accident more likely?… Does using a cell phone while driving make an accident more likely? Researchers compared telephone company and police records to find 699 people who had cell phones and were also involved in an auto accident. Using billing records, they compared cell phone use in the period of the accident with cell phone use in the same period on a previous day. Result: The risk of an accident was four times higher when using a cell phone.?The proper graph for showing the distribution of phones by manufacturer (i.e., number of people who own an Apple phone, number of people who own a Samsung phone, etc.) is aa. bar graph.b. phonograph.c. line graph.d. stemplot.e. histogram. A survey at a local university reveals that 30% of smartphone owners use Verizon, 45% use Sprint, and the remainder use a different company. What percent of smartphone owners at the university use a different company than Verizon or Sprint?a. 75%b. 55%c. 30%d. 25%e. 70% A survey at a local university reveals that 30% of smartphone owners use Verizon, 45% use Sprint, and the remainder use a different company. What percent of smartphone owners at the university do not use Verizon?a. 70%b. 55%c. 25%d. 30%e. 75% While an analyst considers the time plot of the closing value of the Dow Jones Industrial Average, he notices a trend. This means he seesa. changes due to confounding.b. changes due to nonresponse.c. the margin of error.d. a persistent long-term rise or fall.e. a pattern in a time series that repeats itself at known regular intervals of time. The proper graph for showing the percentage of students in a monogamous relationship, grouped by year in school (freshman, sophomore, etc.), is aa. histogram.b. pie chart.c. line graph.d. dotplot. A hospital database contains the following information about each birth: mother’s age at delivery, mother’s weight prior to pregnancy, whether the mother smoked during pregnancy, mother’s race, and baby’s birth weight. Which of the following lists of variables are all categorical?a. Mother’s weight prior to pregnancy, mother’s raceb. Whether the mother smoked during pregnancy, mother’s racec. All of the variables are quantitative.d. Mother’s age at delivery, mother’s weight prior to pregnancy, baby’s birth weight The proper graph to display the percent of students who use Verizon over time is aa. line graph.b. bar graph.c. pie chart.d. histogram.e. boxplot. An ad for a new heartburn treatment says that it “reduces heartburn by 300%.” What does this mean?a. It’s nonsense because percents only make sense for counts, and amount of heartburn isn’t a count.b. It means there is only seven-tenths as much heartburn after using the treatment because 300/1000 = 0.3, or three-tenths.c. It’s nonsense because removing 100% of the heartburn already removes all of it.d. It means that there is 3 times as much heartburn before using the treatment as there is after using it.e. It’s nonsense because heartburn is a categorical variable, so percents don’t make sense. In the last half of 2015, the price of Apple, Inc. (AAPL) common stock dropped from $126.60 per share to $105.26 per share. What percent decrease is this?a. 6.86%.b. 20.27%.c. 0.2027%.d. 0.1686%. Math Statistics and Probability MTH 144 Share QuestionEmailCopy link Comments (0)