The number of days with a minimum temperature below freezing were measured for 20 different cities in the United States. These data are shown in the vector below. To use the data, copy and paste the following line into your R or RStudio console. FrostDays=c(103,168,70,174,161,155,168,188,173,70,100,15,103,127,0,155,160,126,95,188); a. Find the value of Q1, the first quartile for this data. Round to at least FOUR decimals if necessary Answer: days b. Suppose another city is measured and its number of days with a minimum temperature below freezing is 190. Would this value be considered an outlier based on the sample above? A. No O B. Yes c. To collect this sample, the researcher looked up data on temperatures online. The 20 cities for which it was easiest to find the temperature data were chosen for the sample. Which of the following is the best description of the type of sampling method used? A. Convenience sampling B. Cluster sampling O C. Simple random sampling O D. Stratified sampling