Statistical Inference

Institute of Business Administration Main Campus Class subsidisation# 01statistical InferenceDated: 30-09-2012 1. assumption a warning regular distribution, find the polish low the curve which lies i) to the left of z = 1.43; ii) to the effective of z = -0.89: iii) surrounded by z = -2.16 and z = - 0.65; iv) to the left of z = -1.39; v) to the right of z = 1.90: vi) between z = -0.48 and z = 1.74. 2. accustomed a step normal distribution, apprise of k much(prenominal) that i) P(Z < k) = 0.0427; ii) P(Z > k) = 0.2946; iii) P(-0.93 < Z < k) = 0.7235. 3. Find the value of z if the eye socket under a standard i) to the right, of z is 0.!022; ii) to the left of a is 0.1131; iii) between 0 and z, with z > 0, is 0.4838; iv) between - z and z, with z > 0, is 0.9500. 4. apt(p) a normal distribution with µ= 30 and ?= 6, find i) the normal- curve area to the right of x = 17; ii) the normal-curve area to the left of x = 22; iii) the normal-curve area between x = 32 and x = 41; iv) the value of k that has 80% of the normal-curve area to the left. v) the two value of x that comprise the middle 75% of the normal-curve area. 5.

A soft- sop up motorcar is regulated so that it discharges an fair of 200 milliliters per cup. If the amount of drink is normally distributed with a standard deviation equal to 15 milliliters, i) What fraction of the cups will contain more than 224 milliliters? ii) What is the proba bility that a cup contains between 191 and 2! 09 milliliters? iii) How galore(postnominal) cups will probably torrent if 230-milliliter cups are used for the adjoining 1000 drinks? iv) Below what value do we get the microest 25% of the drinks? 6. The average life of a certain type of small motor is 10 long time with a standard deviation of 2 years. The manufacturer replaces vindicate all motors that go wrong while under guarantee. If he is instinctive to replace totally 3% of the motors that fail, how...If you want to get a full essay, assure it on our website: BestEssayCheap.com

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