first question . please help me

1. A researcher wanted to get the percentage of college students that major in Business. The researcher got information from 5 colleges with a total of 11 thousand students and found that 1.5 thousand of them majored in Business. a. What is the population? b. What is the sample? c. What is the parameter? d. What is the symbol for this parameter? e. What is the statistics? f. What is the symbol for this statistics? 2. A researcher wants to determine the average amount of minutes it takes for a medicine to reduce headache pain for adult males. The researcher contacted 107 subjects to participate in the study, but only got results from 79 of the subjects. The average time it took for the medicine to reduce headache pain for these subjects was 27 minutes. a. What is the population? b. What is the sample? c. What is the parameter? d. What is the symbol for this parameter? e. What is the statistics? f. What is the symbol for this statistics? 3. A business has Brand A, Brand B and Brand C of the same product. Market research has shown that 43% of costumers that purchase this product will choose Brand A. An organization conducts a poll of 100 consumers. Find the probability that 40 to 45 of the 100 consumers will prefer Product A, given the 43% brand preference is correct. 4. A manufacturing machine has a 4% defect rate. If 4 items are chosen at random, what is the probability that at least one will have a defect? 5. The television show September Road has been successful for many years. That show recently had a share of 17, meaning that among the TV sets in use, 17% were tuned to September Road. Assume that an advertiser wants to verify that 17% share value by conducting its own survey. A pilot survey begins with 14 households that have TV sets in use at the time of a September Road broadcast. a) Find the probability that none of the households are tuned to September Road. P(none) = b) Find the probability that at least one household is tuned to September Road. P(at least one) = c) Find the probability that at most one household is tuned to September Road. Plat most one) = d) if at most one household is tuned to September Road, does it appear that the 17% share value is wrong? (Hint: Is the occurrence of at most one household tuned to September Road unusual?) Use a value of 5% or lower for "unusual". 6. After being rejected for employment, Kim Kelly learns that the Bellevue Credit Company has hired only three women among the last 17 new employees. She also learns that the pool of applicants is very large, with an approximately equal number of qualified men as qualified women. Help her address the charge of gender discrimination by finding the probability of getting three or fewer women when 17 people are hired, assuming that there is no discrimination based on gender. 7. A small regional carrier accepted 21 reservations for a particular flight with 20 seats. 13 reservations went to regular customers who will arrive for the flight. Each of the remaining passengers will arrive for the flight with a 56% chance, independently of each other. Give answer to 4 decimal points or copy and paste your answers from Excel. a) Find the probability that overbooking occurs. b) Find the probability that the flight has one or more empty seats. c) Find the probability that the flight has no empty seats and no overbooking