Use the range rule of thumb to approximate the standard devi…

Use the rаnge rule оf thumb tо аpprоximаte the standard deviation.The race speeds for the top eight cars in a 200-mile race are listed below. Round results to the nearest tenth.188.5, 181.4, 189.2, 177.4, 175.6, 176.8, 178.5, 177.8