Identify the type of sampling used (random, systematic, convenience, stratified, or cluster sampling) in the situation described below. In a poll conducted by a certain research center, 945 adults were called after their telephone numbers were randomly generated by a computer, and 37 % were able to correctly identify the president. Which type of sampling did the research center use? 1. Systematic sampling 2. Cluster sampling 3. Random sampling 4. Convenience sampling 5. Stratified sampling

Write a program that prints the day number of the year, given the date in the form month-day-year. for example, if the input is 1-1-2006, the day number is 1; if the input is 12-25-2006, the day number is 359. the program should check for a leap year. a year is a leap year if it is divisible by 4, but not divisible by 100. for example, 1992 and 2008 are divisible by 4, but not by 100. a year that is divisible by 100 is a leap year if it is also divisible by 400. for example, 1600 and 2000 are divisible by 400. however, 1800 is not a leap year because 1800 is not divisible by 400.

Alcohol’s affects on the cornea and lens of the eye make it more difficult

How can the temperature of a room be raised by 5degreesf?