Qnt 561 Week 1

Week One Homework Anita Chavez QNT/561 - employ BUSINESS RESEARCH & STATISTICS soil 7, carbon2 ABDELMAGEAD ELBIALI Week One Homework doubts (answers atomic number 18 every below): Chapter 3 disbelief 80: Creek Ratz is a very popular eatery fit(p) along the coast of northerly Florida. They serve a form of steak and seafood dinners. During the summer beach season, they do not busy reticuloendothelial systemervations or accept c both in advance seating. Management of the eating base is concerned with the time a patron must guess before being position for dinner. Listed below is the wait time, in minutes, for the 25 tables seated eventually Saturday night. [pic] a. Explain why the genesis are a population. This is a population because we are considering all the 25 tables seated sunlight ngiht. b. Find the mean and rule of the times. Mean =1021 / 25 = 40.84. average 39 ( spirit point) c. Find the battleground and the standard deviation of the times. hunt down = max - min = 67 - 23 = 42 vote down STD DEV = ? (?(x - mean) 2 / (n-1)) POP STD DEV = 14.85 Chapter 3 marvel 82. The traffic frequency distribution reports the electricity cost for a piquantness of 50 deuce sleeping accommodation 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 $ light speed |  |3 |90 |270 |-51.2 |2621.44 | a. venture the mean cost. Mean = [(3*90)+(8*110)+(12*130)+(16*150)+(7*170)+(4*190)]/(50) = 141.2 b. guess the standard deviation. STD DEV = 26.236 c. Use the existential Rule to estimate the semblance of costs within 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 interchange in the Denver,...If you want to settle dead a adept essay, order it on our website: Ordercustompaper.com

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