What distribution will a standardized residuals of univariate linear regression has?

Kalpana K
2022-07-08

What distribution will a standardized residuals of univariate linear regression has?

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asked 2020-12-05

A 5.00kg sack of flour is lifted vertically at a constant speed of 3.50m/s through a height of 15.0m. a) How great a force is required? b) How much work is done on the sack by the lifting force? What becomes of this work?

asked 2021-02-11

A 95.0kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a) accelerating upward with an acceleration of 1.80 $\frac{m}{{s}^{2}}$ , (b) moving upward at a constant speed and (c) accelerating downward with an acceleration of 1.30 $\frac{m}{{s}^{2}}$ ?

asked 2021-02-26

A tow truck pulls a car that is stuck in the mud, with a force of 2500 N as in Fig P5.27 The tow cable is under tension and therefor pulls downward and to the left on the pin at its upper end. The light pin is held in equilibrium by forces exerted by the two bars A and B. Each bar is a strut that is, each is a bar whose weight is small compared to the forces it exerts, and which exerts forces only through hinge pins at its ends. Each strut exerts a force directed parallel to its length. Determine the force of tension or compression in each strut. Proceed as follows Make a guess as to which way (pushing or pulling ) each force acts on the top pin Draw a free-body diagram of the pin. Use the condition for equilibrium of the pin to translate the free-body diagram into equations. From the equations calculate the forces exerted by struts A and B. If you obtain a positive answer, you correctly guessed the direction of the force. A negative answer means the direction should be reversed, but the absolute value correction should be reversed, but the absolute value correctly gives the magnitude of the force. If a strut pulls of a pin, it is in tension. If it pushes, the strut is in compression. Identify whether each strut is in tension or in compression.

asked 2020-11-01

As part of your work out, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when u push the platform, you compress the springs. You do 80.0G of work when u compress the springs 0.200m from their uncompressed length.

a) What magnitude of force must u apply to hold the platform in this position?

b) How much additional work must you do to move the platform 0.200m farther, and what maximum force must you apply?

a) What magnitude of force must u apply to hold the platform in this position?

b) How much additional work must you do to move the platform 0.200m farther, and what maximum force must you apply?

asked 2022-01-10

How many liters of a 0.0550 M KCl solution contain 0.163 moles KCl?

asked 2021-01-05

A beaker of water sits in the sun until it reaches anequilibrium temperature of 30°C. The beaker is made of 100 g ofaluminum and contains 170 g of water.In an attempt to cool this system, 105g of ice at 0°C is added to the water.
(a) Determine how much ice remains after thesystem reaches equilibrium

asked 2020-11-22

Suppose that R and S are commutative rings with unites, Let

a. If A is prime in S, show that

b. If A is maximal in S, show that