Question

Upper A packager wraps nbspone item every 10 ​minutes, so 240 items are completed in her first week of work. Her manager checks her work by randomly selecting a day of the week comma then reviewing all the items she completed that day. Does this sampling plan result in a random​ sample? Simple random​ sample?

Answer 1

yes for sampling plan result in a random​ sample

no for sampling plan result in simple random​ sample

Explanation:

total item = 240

time = 10 min

to find out

does sample plan result in random​ sample and does Simple random​ sample

solution

we know he do wrap 240 item in a week

and every item is wrap in 10 min

and check in a day of week

so we can say here directly by given data every item not selected every day

so

yes there are for some item of all group are possible same chance of select in random sample

and

no for simple random sample because each and every item is not selected