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15. To estimate the percentage of individuals in the state of Texas who are social distancing Tony randomly chose 200 people residing in Dallas, Texas. Is the sample biased? If so, why is it biased? 16. Below is the frequency distribution of sample overnight temperatures. Convert it to a relative frequency distribution. Temperature Frequency lFi 17. Construct a histogram of the frequency distribution in problem 15. Describe its shape. 18. Use the stem and leaf plot to answer the questions about the sample. 3'2444689 mean 17. Construct a histogram of the frequency distribution in problem 15. Describe its shape. 18. Use the stem and leaf plot to answer the questions about the sample. aUA W N 4 6 8 9 mean 0 6 7 8 8 9 0 0 W A 5 2 3 4 6 median 19. An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects the phenotype of peas. Listed below are the phenotype codes where 1 = smooth-yellow, 2 = smooth-green, 3 = wrinkled-yellow, 4 = wrinkled-green 4 1 4 2 2 4 4 2 2 2 3 3 3 2 Mean Median Mode Midrange 20. Does it make sense to use any of the measures of center in problem 19? If so, which one(s)