Question

diego took a survey to find out how many students plan to go to a school band concert. there are more than 1,000 students in his school. he selected a sample by asking the first 50 students he met at band practice. which of these statements are true about his sampling method? select all that apply. his sample will probably be biased. his sample will definitely be valid. his sample will probably be random. his sample will probably be invalid. his sample will be a good representation of the student population.

Explanation:

Diego's sample is from band - practice students. These students are more likely to be interested in the band concert compared to the general student population. So, the sample is likely to be biased and probably invalid as it doesn't represent all students fairly. It is not random since it's just the first 50 students at band practice.

Answer:

His sample will probably be biased.
His sample will probably be invalid.