Qnt 561 Week 1

Week One Homework Anita Chavez QNT/561 - APPLIED BUSINESS investigate & STATISTICS defect 7, carbon2 ABDELMAGEAD ELBIALI Week One Homework doubts (answers are all infra): Chapter 3 Question 80: Creek Ratz is a very(prenominal) popular eatery located along the coast of northern Florida. They serve up a variety of steak and seafood dinners. During the summer beach season, they do non busy reservations or accept call ahead seating. focusing of the eating house is concerned with the time a help must depend before being seated for dinner. Listed below is the wait time, in minutes, for the 25 tables seated stretch out Saturday night. [pic] a. let off why the generation are a existence. This is a population because we are considering all the 25 tables seated Sunday ngiht. b. set out the mean and normal of the times. Mean =1021 / 25 = 40.84. Median 39 (middle point) c. Find the arena and the standard deviation of the times. Range = liquid ecstasy - min = 67 - 23 = 42 POP STD DEV = ? (?(x - mean) 2 / (n-1)) POP STD DEV = 14.85 Chapter 3 Question 82. The avocation frequency distribution reports the electricity cost for a savor of 50 both bedroom apartments in Albuquerque, New Mexico during the month of May last year. [pic] |Electricity Cost |Frequency | middle |fM |(M-X) |(M-X)^2 |f(M-X)^2 | |$80 up to $100 |  |3 |90 |270 |-51.2 |2621.44 | a. prognosticate the mean cost. Mean = [(3*90)+(8*110)+(12*130)+(16*150)+(7*170)+(4*190)]/(50) = 141.2 b. Estimate the standard deviation. STD DEV = 26.236 c. give the Empirical Rule to estimate the similitude of costs inside two standard deviations of the mean. What are these limits? X=141.2-2(26.236) = 87.728 X=141! .2+-2(26.25) = 192.672 Chapter 3 Question 87. Refer to the Real res publica data, which reports information on homes sold in the Denver,...If you want to drop dead a full essay, order it on our website: OrderCustomPaper.com

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