A car company sells six models of cars. They would like study sales by car model (e.g. Camaro, Impala, etc.). Which graph would provide the most effective presentation?

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A scientist has some up a new fertilizer for roses. She feels that with the use of this fertilizers, the average blooming time span for a rose will be no more than 55 days? You don't agree with the scientist. Which of the following would be the alternative hypothesis to test your claim? 0 Ha: u 2 55 0 Ha: u 55 o Ha:|.1555 A car company sells six models of cars. They would like study sales by car model (eg. Camaro, Impala, etc). Which graph would provide the most effective presentation? 0 Pie chart 0 Scatter plot 0 Stern and leaf diagram 0 Bar chart A company feels that the amount spent on marketing and the number of sales people both affect how many cars they sell each year. Which of the following is true? 0 Amount spent on marketing is a dependent variable 0 Number of sales people is a continuous random variable 0 Number of cars is an independent variable 0 Number of cars is discrete random variable