Recall the activity from topic 15, that examined the lean direction of kissing couples. We want to perform a test to see if the proportion of couples who lean right is less than two-thirds. Step 1: The parameter is

.

Step 2: The null hypothesis is 0:=
[ Select ]
. The alternative hypothesis is :

Step 3: The technical conditions
satisfied.

A sample of 124 kissing couples were observed, with 80 or them leaning their heads to the right.

Step 4: The test statistic is:

(rounded to 2 decimal places)

Step 5: The p-value is:

Step 6: At the =.05 significance level, we

the null hypothesis. We conclude that