Question

A smart phone manufacturer wants to determine the average battery time that its new smart phone will get. The manufacturer will test 100 smart phones. Match the strategies to their corresponding sampling techniques.

a. The manufacturer tests 20 smart phones from each of its five equally sized distributors.
b. The manufacturer tests every 1000th smart phone that comes off the assembly line.
c. The manufacturer uses a computer to randomly select 150 smart phone serial numbers and tests all 150 phones with these serial numbers.
d. The manufacturer asks 100 of her friends who have the phone if she can borrow their phones to test.
e. The manufacturer finds three small communities that have dry moderate and humid climates and every smart phone from each of these three communities is tested.

1. Simple Random Sampling
2. Cluster Sampling
3. Stratified Sampling
4. Convenience Sampling
5. Systematic Sampling

Answer 1

Using sampling concepts, it is found that the matches of the strategies to their corresponding sampling techniques are given by:

• a - 3.

• b - 5.

• c - 1.

• d - 4.

• e - 2.

How are samples classified?

Samples are classified as:

• Convenient: Drawn from a conveniently available pool.

• Random: All the options into a hat and drawn some of them.

• Systematic: Every kth element is taken.

• Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.

• Stratified: Also divides the population into groups. Then, a equal proportion of each group is surveyed.

Item a:

Population divided into equally-sized groups(by distributors), and the same number from each is taken, hence stratified sampling is used, and the matching is a - 3.

Item b:

Every kth piece, hence systematic sampling is used, and the matching is b - 5.

Item c:

150 phones are chosen randomly, hence random sampling and the matching is c - 1.

Item d:

Asks friends, so by convenience sampling, hence the matching is d - 4.

Item e:

Divided into groups(by communities), all elements are surveyed, hence cluster sampling and the matching is e - 2.

You can learn more about sampling concepts at https://brainly.com/question/25119689