Can someone help with my review? I do not understand the material.

Microsoft Excel

1. My family bought a lovely suburban home that was advertised as having a 25 minute commute from UH. After a while I began to be suspicious that the commute was actually longer. I kept track of my commute times for 40 days and found my drive averaged 32 min with a std dev of 10 min Does my evidence make their claim suspect? Find an answer with a 95% confidence interval Find an answer using a hypothesis test with a Z score at the 99% level.