Nuclear power plants must discharge the excess heat generated in the nuclear process to the environment. Some plants exhaust this heat to nearby water sources. There is concern that this "thermal pollution" has an adverse effect on aquatic life near the plant. Researchers at the Environmental Protection Agency (EPA) catch 100 fish from the discharge pond of a particular power plant. They track the growth rates and life span of these fish, and compare these data to the data for fish from similar streams whose temperatures are not affected by the plant's thermal effluent. The sample in this experiment is: ( a) the 100 fish caught by the EPA. O b) the selected nuclear power plant. O c) all nuclear power plants. O d) all fish in the discharge path.A survey records the average amount of time spent studying each week for students at a large university. What type of data are these? ( a) Categorical (b) Qualitative ( c) Discrete O d) ContinuousAn experiment consists of three tosses of a two-sided coin with the possible outcomes heads (H) or tails (T) from each toss. The outcome space is: S = {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT} We define event A as "no heads are observed" and event B as "no tails are observed." What is AUB? O a) (TTT, HHH] Ob) (TTT] ( c) { } ( the empty set) O d) (HHH]International passengers on a commercial plane ying into Costa Rica are asked how many days they intend to spend in the country. The pie chart summarizes their responses. What is the relative frequency of international passengers on this plane who intend to spend more than seven days in the country? 0 a} 9 C') bi {1.195 0 cl o.o4a 0 d1\" p.152 Relative Class Frequency Frequency Strongly Disagree 10 0.172 Disagree Agree 22 0.379 Strongly Agree 0.190 Total 58 This frequency distribution table summarizes responses to a customer survey. Some of the values are purposely missing. What must the frequency of "Strongly Agree" be? ( a) 11 ( b) 0.259 Od 1 O d) 0190