When conducting an observational study, it is important to choose a topic, select a variable, create a hypothesis, collect the data, and analyze the data for validity of the hypothesis. which additional step is also crucial to the success of the study?
observational study
nonrandomized study
sample survey
experimental study

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

Ihave trouble finding the nth term of a linear sequence