Question

Note: Answer Questions 1-6 by Using the TI-30XA (or other approved) Calculator. IMPORTANT: Make sure you carry all decimals until you reach your answer, then round to four decimals. 15 Starbucks has found that 28% of customers purchase more than one cup of coffee per day from their shops. Suppose you randomly choose 200 of today's Starbucks customers. Question 1 Find the probability that no less than 33% of them purchased more than one cup of coffee from Starbucks. 0.0582 The weight of a 5th grader is normally distributed with a mean of 83 pounds and a variance of 49 pounds^2. Let weight, in pounds, be represented by random variable X. Question 2 P177 <X<X2) = 0.1350. Find x2 (Remember the label.)

Answer 1

Given, p = 0.28 1-p= 0.72 n=200 Here, np = (200) (0.28)=56 ncirp) =(200) (0.72) = 144 h with a normal. Since npes and nci-poo, we can approximate distribution with MÅ= p = 0.28 TB PCI-P 6-263(-0-28) 20.0314 purchased more The than probabilly one cup of That no less than 337 of them coffee from starbucks is, P(p>0.33), airea este 0.33 0.28 -- Plzc 3175] 21- P(Z < 1.575) = 1- 0.942372 0 057 628 ł 0.0576