Contents: Summarizing Data, The Role of Probability, & Confidence Intervals (Partial) 1. (6 points) Based on the given description, classify each of the following according to the most likely type (probability or non-probability) and method of sampling (simple random, systematic, stratified, convenient) Measured variable Type of sampling Method of sampling Estimating the average life expectancy of CSU Fresno students by sampling students in Dr. MixJohi's PH 92 Statistics class. Grouping college students based on academic year (i.e., freshman, sophomore, junior, and senior), then using random number tables to send a survey to assess self-reported anxiety levels in each group. Selecting every fifth person that walks by during lunch hour to answer a survey about nutrition. 2. (3 points) Classify each of the following as either basic or conditional probability. Description Classification: Basic or Conditional? Sensitivity of a screening test Proportion of graduate students' population consuming caffeinated coffee, in a national survey of graduate students. Proportion of female graduate students who consume caffeinated coffee, in a national survey of graduate students. 3. (3 points) A national survey of graduate students is conducted to assess their level of coffee consumption. Assuming a normal distribution of the data, what percentages of the population of graduate students will have coffee consumption level that would fall within regions A, B, and C on the graph? Region A- of the Population Region B: of the Population Region C: % of the Population 1+20 #1430 4. (3 points) In question 3 above, assume that the population average coffee consumption level is 3 cups/day, with a population standard deviation of 2 cups/day. What would be the estimated minimum number of cups/day consumed by the top 5% of the population? cups/day