A randómly selected sample of 1000 college students was asked whether they had ever used the drug STC sixteen percent (16%) of the 1000 students survived said they had. which one v. of the following...

Extracted text: A randómly selected sample of 1000 college students was asked whether they had ever used the drug STC sixteen percent (16%) of the 1000 students survived said they had. which one v. of the following statements about the number (0.16) is correct: A. It is a sample proportion. B. it is a population proportion. C. it is a margin of error. D. it is a randomly chosen number Q2. [2+3=5 points] In a survey of 200 households it was found that 152 households had at least one car estimate the proportion of households in the population that have at least one car and place abound on the error of estimation assuming that the total number of households is 1500.Interpret your results (comment on the results) Q3. [5points] An advertising firm is interested to estimate the average television-viewing time, in hours per week, in a city. The city is divided into three blocks. A stratified random sample of 60 households was selected proportionately from each block considering the blocks as strata. The summary data of the survey are presented in the following table: Stratum (i) ni Mean(ỹ;) 1 120 18 39.0 9.0 100 15 20.0 16.0 2 180 27 25.0 4.0 Estimate the total television-viewing time per week, and place a bound on your estimate. Interpret the results. Q4. [1+2+2=5 points] A professor wants to study the hours spent per day by the students of a college on viewing TV there are 1100 students in the college he selected a simple random sample of 30 students and found the sample mean and sample variance to be y = 2.5 hrs, s² = 1.20 hrs a. Estimate µ the true average hours spent per day in the viewing TV by the students. b. Estimate the total number of hours spent by the student of the College in viewing TV. c. How large a sample should be in order to estimate u with bound of 0.5 on error of estimation given that the population standard division o is 2.