grumpcat911Lv1

16 Mar 2023

Please don't round or give in fractions

A furniture company wants to know what percent of their customers are satisfied with the furniture they purchase. The company surveys 137 customers to gather feedback. Suppose that, in reality, 93% of all customers are satisfied with their purchase.

 

   1. How are the collection of all sample proportions of samples of size 137 distributed?

       N (______,______)

 

   2. What is the probability that fewer than 90% of those surveyed are satisfied with their purchase?

• List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma. __________
• There is __________ a chance that fewer than 90% of those surveyed are satisfied with their purchase.

 

   3. What is the probability that more than 94% of those surveyed are satisfied with their purchase?

• List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma.
• There is a chance that more than 94% of those surveyed are satisfied with their purchase.

   4. What is the probability that between 90% and 94% of those surveyed are satisfied with their purchase?

• List the z-scores needed to calculate the result. If there is more than one z-score, separate the values with a comma.
• There is a chance that between 90% and 94% of those surveyed are satisfied with their purchase.