the aspect ratio of the ratio of the width to the height of various computer monitor is listed in the table below Monterey with 1152 height 864 monitor be with 800 height 600 Monocacy 1920 x 1080p monitor D with 1600 height 1200 which manager has an aspect ratio different from the other three​

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?