Molly’s Reach, a regional restaurant and gift shop, has rece…

Molly’s Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, particularly focused on their gift shop. To determine if their proposal is of interest, they plan to survey a random sample of their regular customers. All regular Molly’s Reach customers is known as the ________ of the study.

Based on data collected from its production processes, Cross…

Based on data collected from its production processes, Crosstiles Inc. determines that the breaking strength of its most popular porcelain tile is normally distributed with a mean of 400 pounds per square inch and a standard deviation of 12.5 pounds per square inch.  Based on the 68-95-99.7 Rule, about what percent of its popular porcelain tile will have breaking strengths between 375 and 425 pounds per square inch? 

At a local manufacturing plant, employees must complete new…

At a local manufacturing plant, employees must complete new machine set ups within 30 minutes.  New machine set-up times can be described by a normal model with a mean of 22 minutes and a standard deviation of four minutes.  What percent of new machine set ups take more than 30 minutes?