Let 
, and let Z = (X ? µ)/?. Use Equation (4.25) to show that Z ~ N(0, 1).
What will be an ideal response?
Let a = 1/? and let b= ??/?. Then Z= aX + b. Now a? + b = (1/?) ? - ? /?=0, and 
.
Equation (4.25) now shows that 
.
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The ____________________ changes, or rectifies, the available AC to DC and adjusts the DC to control the motor operations.
Fill in the blank(s) with the appropriate word(s).
Cortar una sección en V significa:
a. desviar. b. cortar de una saliente. c. cortar una sección de plancha que pueda doblarse para que se corresponda con un radio. d. cortar para una soldadura.
Insulating concrete and foamed concrete can be used as insulation on a steel roof deck. Both these concretes must also include board insulation. Which board insulation is used and why is board insulation necessary when the concrete has insulating value?
What will be an ideal response?
The indoor fan on an oil furnace is controlled by:
A) Either a temperature-sensing fan switch or the primary control. B) A temperature-sensing fan switch. C) The primary control. D) A centrifugal switch on the oil burner motor.