Course: STAT 100-101 (Wint x $100 termtest2.pdf X stattables_twopage-rotated x Stat 100 Unit 7 Notes.pdf X *Course Hero X 15 (15) WhatsApp X + V X C ourcourses.uregina.ca/pluginfile.php/3031981/mod_resource/content/1/s100%20termtest2.pdf A E s100 termtest2.pdf 3 / 4 100% + Question #3: (6 marks) A random sample of 64 Saskatchewan households had mean credit card debt of $7868. We wish to use this sample to estimate the true mean credit card debt of Saskatchewan households. For this question, we will assume that the population standard deviation is known to be $2070. Round all final answers to two decimals. a) By the central limit theorem, the shape of the associated sampling distribution can be assumed to be approximately normal with mean = and standard deviation = 2 b ) What is the maximum error of a 90% confidence interval estimate? 3 c) What is the 90% confidence interval of the true Saskatchewan household credit card debt? (Give your final answer in either interval notation or inequality notation)