The 30-mile I-287 corridor near Tarrytown, New York, is heavily traveled and is a major interstate transportation link. The Tappan Zee Bridge is part of this road network and is in need of structural repairs. Approximately 140000 vehicles cross this bridge every day Transportation officials have decided to conduct a hypothesis test and wil1 raise tolls to fund planned repairs if there is evidence to suggest that the mean number of cars per day using this bridge has increased.

(a) Write the null and alternative hypotheses about μ , the mean number of cars per day that
(b) For the hypotheses in part (a), describe the Type I and Type II errors in the context of the
(c) If a Type I error is committed who is more angry, the transportation officials or drivers,
(d) If a Type II error is committed who is more angry, the transportation officials or drivers, cross the Tappan Zee Bridge, that the transportation officials would want to test. problem. and why? and why?

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8

you need to give us more information since we can't answer

sure i'm up for it

step-by-step explanation: