Question 1: The management of a grocery store has kept a record of bad checks received per day for a period of 200 days. The data are shown below. Number of Bad Checks Received Number of Days 0 8 1 12 2 20 3 60 4 40 5 30 6 20 7 10 Develop a probability distribution for the above data. Determine the cumulative probability distribution. What is the probability that in a given day the store receives four or less bad checks? What is the probability that in a given day the store receives more than 3 bad checks?

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Zahra wants the equation below to have an infinite number of solutions when the missing number is placed in the box.