In the book Essentials of Marketing Research, William R. Dillon, Thomas J. Madden, and Neil A. Firtle discuss the relationship between delivery time and computer-assisted ordering. A sample of 40 firms shows that 16 use computer-assisted ordering, while 24 do not. Furthermore, past data are used to categorize each firm's delivery times as below the industry average, equal to the industry average, or above the industry average. The results obtained are given in the table below. A Contingency Table Relating Delivery Time and Computer-Assisted Ordering Computer- Assisted Ordering No Yes Column total Delivery Time Equal to Below Industry Industry Average 4 Average 12 4 10 14 16 Above Industry Row Average Total 8 24 2 16 40 HO. independence. 10 Click here for the Excel Data File (a) Test the hypothesis that delivery time performance is independent of whether computer-assisted ordering is used. What do you conclude by setting a = .05? (b) Verify that a chi-square test is appropriate.

Q: 4 -30 X2 X3 45 -17 32 3) %3D 2. 3.

A: 1-14-201-343250-3-205x1x2x3x4=-3045-1732use Guass Elimination method , to solve the system

Q: Find A + 0. 3 -7 0 0 0 = 0 0 A = %3D 8 -9 A+0 =

A: Given that two matrix and we solve use the addition rule of matrix and find (A+O).   Here i attached…

Q: 2?′+5?=10

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A: It is needed to solve 16 – 10 · 3 – 90 + 32.

Q: 3) 3x+1=243

A: The given equation 3x+1=243. We have to find the value of x.

Q: 5. Зх — 4у %3D —5 -x + 3y = -5

A: Ans.       3x-4y=-5→       l             -x+3y=-5 →        ll     equation l+3×equation 2…

Q: 5. (15x3 + 33x² + 6x = 0 %3|

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Q: 10 10 1. +== 6 х+3 3 2x x-5x 2. 5 5x 10 4 5 3. х*-2х х х-2

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Q: 3.9b + a3 + 27 - 3a2 + 5a3 - 2a2 + 2.1b + 7

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Q: 1+1+1+1+1 1+1+1+1+1 1 + 1 x 0 + 1 = ?

A: Solution :- 1+1+1+1+1+1+1+1+1+1+1+1× 0+1Follow the PEMDAS order of operationsMultiply and divide…

Q: -4 -1 4 C = -9 6 9 10 -7 20 =

A: The explanation of answer as follows

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A: Given: I=∫23x3-2xx-1dx For evaluating given integral, we substitute x-1=t…

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Q: 2х, +3х2 +3*2 = 7 -х, +2х2 +3*2 = 8 Ха -X2 +2*3 = -1 =8

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Q: (2х + 1)*у" — 2(2х + 1)у' — 12у %3 6х

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Q: /Solve the following: ( ) 1 a) L-1 s(s²+a) 18z² (2 z-1)(4 z+1) b) Z¹

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Q: 36-9z

A: Given that:36-9z

Q: dy Determine or y' of the following functions in terms of x. dx

A: Derivatives can be defined as rate of change of function with respect to an independent variable. It…

Q: Find the solution for 3/4 - (-6/12)

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Q: 1/6a+1/4=1/2a-3/4

A: 16a+14=12a-34

Q: 2 7t 3/2 dt

A: we will use substitution

Q: Differentiate

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Q: 5. Expressed in simplest form, 1-3 is equivalent to 1) -3- /3 2) -3+3 3) 23 4) -3

A: Rationalization

Q: 5-29-3y=1-x

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Q: Given y=63x+1, find y". A 3x(3x+1)63x-1 B (9)63*+1 © 63x+1 D (3in6)263*+1

A: Given, y =63x+1 then y'' = ?

Q: メL Ix-1

A: Given  We had given linear equation in variable x such that (X+1)/5 = (7X-1)/3

Q: 5. У'+4у3D0, у'+4у%3D0, = 2; y' 2 :-2 2

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Q: B) (x + 10) +y-10)"= 16

A: Given: Center = ( -10 ,  10 ) and radius = 4.

Q: (つずん ワット2レ-1) Y=o

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Q: If x+y=5 and x^2+y^2=13 then x and y =??

A: We have two equations as :                                                        x+y=5…

Q: 4. Simplify av 27 О /27-За?

A: