An important step in creating confidence intervals for proportions is to check whether the success/failure conditions have been met otherwise the interval created will not be valid (i.e. we should not have created that interval)!

The following examples are estimating the proportion of people in the population who read books each night before going to bed. Try to determine whether or not the assumptions have been met.

• In a sample of 105 people surveyed, 47 read books each night before going to bed.
• In a sample of 45 people surveyed, 43 read books each night before going to bed.
• In a sample of 24 people surveyed, 18 read books each night before going to bed.
• In a sample of 12 people surveyed, 8 read books each night before going to bed.

Select Answers From the following options:

• Conditions Met
• Conditions Not Met