The following are the last 10 run scores colin got in cricket:
19, 15, 34, 29, 13, 35, 10, 19, 14, 22
a) work out colin's mean score.
b) colin plays cricket again on sunday. he gets 21 runs.
what is his new mean score?

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

Place the following steps in order to complete the square and solve the quadratic equation,

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.