Josh and Rashida Are Considering Using Spermicides as Their Form

question 17

Multiple Choice

Josh and Rashida are considering using spermicides as their form of contraception.What should they know about spermicides prior to using them?

• A) They offer protection from sexually transmitted infections.
• B) They have a very low failure rate.
• C) They should be applied inside the vagina within two hours of intercourse.
• D) Spermicide must be applied or reapplied each time the couple engages in an act of intercourse.

---

Definitions:

Sample Means

The average value calculated from a sample of data, which estimates the mean of the entire population.

Control Limits

Statistically determined lines on a control chart outside of which a process is considered to be out of control or unnatural variations.

Assignable Variation

Changes within a process stemming from particular causes, instead of occurring randomly.

Pooled Standard Deviation

A statistical measure used to estimate the standard deviation of two or more samples by combining variances in a weighted average.