statistics help: in Southern California, it was found that 48% of drivers did not stop at stop sign intersections on city roads. - Help.com



This post left anonymously

in Southern California, it was found that 48% of drivers did not stop at stop sign intersections on city roads.

Assume that a follow-up study two months later found that 360 out of 800 drivers did not stop at stop sign intersections.

a. Formulate the null and alternate hypotheses assuming the purpose of the follow-up study is to see whether the proportion of drivers who did not stop has changed.

b. Using a = 0.05, what are the critical values for the test, and what is the rejection rule?

c. What is the sample proportion of drivers who did not stop?

d. Compute the value of the test statistic.

e. What are your conclusions?

This open post was written 9 months, 3 weeks ago | V/U/S: 30, 0, 1 | Edit Post | Leave a reply | Report Post


Reciprocity (0) Reciprocation Failure -- The poster has NOT helped anyone else yet!

Since writing this post Anonymous may have helped people, but has not within the last 4 days.

Post Tags (1)

statistics (How Tags Affect Reciprocity)

Replies (0)

Where were you?

Click and drag to move the map around. FAQ: How we place people on this map »
You can also watch events on Help.com as they happen
Mouse over the map for 2 seconds to see an expanded, interactive view

There are no replies to this post.

Invite Others to Help

A logged in and verified Help.com member has the ability to setup a Friends List and invite others to help with posts.