1 Proportion - Options
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Stat > Basic Statistics > 1 Proportion > Options

Select among options for the confidence interval and hypothesis test.

Dialog box items

Confidence level: Enter the level of confidence desired. Enter any number between 0 and 100. The default is 95.

Alternative hypothesis: Choose the form of the alternative hypothesis: Proportion < hypothesized value (lower-tailed), Proportion hypothesized value (two-tailed), or Proportion > hypothesized value (upper-tailed). Note that if you choose a lower-tailed or an upper-tailed hypothesis test, an upper or lower confidence bound will be constructed, respectively, rather than a confidence interval.

Method: Choose either the exact method or the normal approximation to the binomial distribution method for calculating the hypothesis test and confidence interval. Most textbooks use the normal approximation method because it is easy for students to calculate by hand.