Find the minimum sample size you should use to assurethat your estimate of  will be within the required marginof error around the population proportion p.

1. Margin of error:  0.027;  confidence level:93%;   is unknown

1. 1. 1124                             b.  1123                                    c.  2168                        d.  842
2. Margin of error:  0.025;  confidence level:94%;  from a prior study,  is estimated to be0.38.
   1. 1414                             b.   1332                       c.   1413                                    d.   1333

Solve the problem

1. Find the point estimate of the true proportion of people whoare over 6 feet tall, if 184 people are randomly selected from acertain population and it is found that 41 of them are over 6 feettall.
   1. 0.223                            b.   0.146                      c.   0.033                       d.   4.488

In the following threeproblems use the given degree of confidence and sample data toconstruct a confidence interval for the population proportion p.Then find the Point Estimate, and then interpret theresults.

1. A survey of 976 voters in one state reveals that 478 favorapproval of an issue before the legislature. Construct the 95%confidence interval for the true proportion of all voters in thestate who favor approval.

1. 1. 0.440 < p <0.540          b.  0.458< p <0.521      c.  0.487 < p< 0.493      d.  0.464< p < 0.516
2. From the results in the problems above, we can say that
   1. At this Confidence Level it’s too close to call what the votersfavor.
   2. More do not favor the proposal than favor it.
   3. The majority do not favor the approval.
   4. The majority favor approval.