Use technology or a z-score table to answer the question. The weights of books in a bookcase are normally distributed with a mean of 11.6 pounds and a standard deviation of 1.3 pounds. There are 136 books on the bookshelf. How many of the books will weigh 10 pounds or more?

A. 109
B. 116
C. 121
D. 130

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

‼️‼️‼️10 points‼️‼️‼️ me it’s important‼️‼️‼️‼️‼️