-74.5 Σχ-894 Ex68672 Sx-13.71462391 ox=13.13075271 n-12 minx=58 Q1-61.5 Med-74 Qa=83.5 maxX-100 a) Assuning the population is bell-shaped, between which two values will approximately 68% of the population be?T b) Assuming the population is not bell-shaped, at least what percentage of the data would lie between the values 35.1 and 113.9? c) What is the value of the interquartile range? d) What is the value of the lower outlier boundary? e) What is the value of the upper outlier boundary?

Canon says their standard ink cartridges should print an average of 1062 pages before needing to be replaced, but Lexmark wants to prove that it is actually less than that. They take a sample of 70 identical printers with Canon ink cartridges and find the mean number of pages printed was 1041. .05, does Lexmark have enough evidence to say that Canon's claim is false? 59 and a Using s

6 X 01:13:24 eBook Quality Progress, February 2005, reports on improvements in customer satisfaction and loyalty made by Bank of America. A key measure of customer satisfaction is the response (on a scale from 1 to 10) to the question: "Considering all the business you do with Bank of America, what is your overall satisfaction with Bank of America?" Here, a response of 9 or 10 represents "customer delight." Suppose that the survey selected 480 customers. Assume that 45% of Bank of America customers would currently express customer delight. That is, assume p = .45. (a) Find the probability that the sample proportion obtained from the sample of 480 Bank of America customers would be within three percentage points of the population proportion. That is, find P(.42 ≤ § ≤ .48). (Round your answer to 4 decimal places. Do not round intermediate values. Round z-value to 2 decimal places.) P(.42 ≤ ≤.48)

Pls help ASAP. Pls show all work.