If spermicides and male latex condoms are used correctly by a group of 30 couples, how many of the 30 women could be expected to become pregnant in a year? Assume that these uses are independent events.

The table gives the percent of women who become pregnant during 1 year of use with different types of contraceptives. The “Typical Use” column includes failures from incorrect or inconsistent use. Use this table in Problem.

Failure Rates Over 1 Year

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Correct and Contraceptive Туре Consistent Use Typical Use Spermicides Diaphragm Male latex condom 6% 21% 6 18 3 12 Unprotected N/A 85