Mathematics, 29.01.2022 01:20 tia5520
The librarian at a public library wants to determine what proportion of the library users are children.
Identify the sampling method used in each example below.
1) Simple random sampling 2) cluster sampling 3) convenience sampling 4) stratified sampling 5) systematic sampling
-As long as there isn't a line of people waiting to check out, each
time a patron checks out a book, the librarian records whether the patron is an adult or a
child.
-Each day this week, the librarian randomly selects 15 patrons
that check out a book that day and records whether the patron is an adult or a child.
-For each seventh patron that checks out a book, the librarian
records whether the patron is an adult or a child.
-The librarian randomly selects two days this week. On those
days, each time a patron checks out a book, the librarian records whether the patron is
an adult or a child.
-Each time a patron checks out a book, the librarian rolls a six-
sided die. If the die lands on six, then the librarian records whether the patron is an adult
or a child.
Answers: 3
Mathematics, 21.06.2019 19:20
Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.
Answers: 1
Mathematics, 21.06.2019 19:40
Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?
Answers: 3
The librarian at a public library wants to determine what proportion of the library users are childr...
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