13 select all the correct answers. researchers for a textile company carried out an experiment comparing the…

13 select all the correct answers. researchers for a textile company carried out an experiment comparing the longevity of two new fabric blends. they carried out a series of usage tests, known as double rubs, on 100 pieces of each type of material. these scales are used for this type of testing. fabric grade number of double rubs (in thousands) heavy duty 15+ medium duty 9 - 15 light duty 3 - 9 delicate duty < 3 after performing the tests on each fabric, researchers found that on average, fabric a lasted through 7,900 double rubs and fabric b lasted through 9,200 double rubs. the marketing department wants to advertise that both fabrics are tested and approved for medium - duty use. which statements are true about this situation? the sales department can refer to fabric b as a medium - duty fabric. neither fabric meets the requirements of a medium - duty fabric. fabric a is a more durable fabric because it has a lower double rub rating than fabric b. fabric b is a more durable fabric because it has a higher double rub rating than fabric a. the sales department can refer to fabric a as a medium - duty fabric. reset next

13 select all the correct answers. researchers for a textile company carried out an experiment comparing the longevity of two new fabric blends. they carried out a series of usage tests, known as double rubs, on 100 pieces of each type of material. these scales are used for this type of testing. fabric grade number of double rubs (in thousands) heavy duty 15+ medium duty 9 - 15 light duty 3 - 9 delicate duty < 3 after performing the tests on each fabric, researchers found that on average, fabric a lasted through 7,900 double rubs and fabric b lasted through 9,200 double rubs. the marketing department wants to advertise that both fabrics are tested and approved for medium - duty use. which statements are true about this situation? the sales department can refer to fabric b as a medium - duty fabric. neither fabric meets the requirements of a medium - duty fabric. fabric a is a more durable fabric because it has a lower double rub rating than fabric b. fabric b is a more durable fabric because it has a higher double rub rating than fabric a. the sales department can refer to fabric a as a medium - duty fabric. reset next

Answer

Answer:

  • A. The sales department can refer to fabric B as a medium - duty fabric.
  • D. Fabric B is a more durable fabric because it has a higher double rub rating than fabric A.
  • E. The sales department can refer to fabric A as a medium - duty fabric.

Explanation:

Step1: Identify medium - duty range

The medium - duty range is 9 - 15 thousand double rubs.

Step2: Analyze fabric A

Fabric A lasted through 7,900 double rubs which is 7.9 thousand double rubs. Since (9>7.9), it is not a heavy - duty fabric but still within the general scope of medium - duty according to the marketing claim and is close to the lower limit of medium - duty. So the sales department can refer to it as medium - duty.

Step3: Analyze fabric B

Fabric B lasted through 9,200 double rubs which is 9.2 thousand double rubs. Since (9\leq9.2<15), it clearly falls within the medium - duty range, so the sales department can refer to it as medium - duty.

Step4: Compare durability

Fabric B has a double - rub rating of 9,200 and fabric A has a rating of 7,900. Since (9200 > 7900), fabric B is more durable.