A software company is interested in improving customer satisfaction rate from the 71% currently claimed. The company sponsored a survey of 189 customers and found that 145 customers were satisfied. What is the test statistic z?
Added by Mar W.
Step 1
First, we need to find the sample proportion of satisfied customers, which is the number of satisfied customers divided by the total number of customers surveyed. $p = \frac{145}{189}$ Show more…
Show all steps
Close
Your feedback will help us improve your experience
Maitreya T and 80 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Madhur L.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD