473 Send data to Excel Part 1 of 3 Assume the population standard deviation is a 91 Part 2 of 3 391 399 a Explain why it is necessary to check whether the population is approximately normal before constructing a confidence interval 350 28 23 11 24 PM It is necessary to check whether the population is approximately normal because the sample size is less than or equal to 30 310 Part 2 3 b Following is a dotplot of these data Is it reasonable to assume that the population is approximately normal Part 3 of 3 304 400 450 able to GALIO 608 500 550 www www aleka com alekscgi lal exa 10 igNalkasNWEDBAGPVRituSgTZa07521mBPJOWICOSCnXEZEVEDOXS 600 650 that the mandation in animali mal ALEKS Abimbola Abudu Section 8 1 Homework 700 40b52280