Standard deviation of the random variable, Basic Statistics

+44 141 628 6080
[email protected]

Standard deviation of the random variable

Suppose the random variable X has mean 45 and standard deviation of 15 and the random variable Y has mean 15 and standard deviation 3. What would be the mean and standard deviation of the random variable X + Y?

Mean 30, standard deviation 9

Mean 30, standard deviation 18

Mean 60, standard deviation 9

Mean 60, standard deviation 15.3

Mean 60, standard deviation 18

View Complete Question

Request for Solution File

Ask an Expert for Answer!!

Basic Statistics: Standard deviation of the random variable

Reference No:- TGS0732380

Expected delivery within 24 Hours

Have a Question? (oR Write a Review)

Write atleast 100 words!!

Recent Questions Asked Basic Statistics

Q : Determine whether the force and couple system shown

Determine whether the force and couple system shown can be reduced to a single equivalent force R. If it can, determine R and the point where the line of action of R intersects the yz plane.

Q : Confidence level does this interval represent

A trucking company wants to estimate the weight load capacity of a particular brand of their flatbed trucks. In measuring 13 of their trucks the average load capacity was 2646 pounds, with a sample standard deviation of 845 pounds. A t-interval wa

Q : What is the longest possible value for the wavelength

If the two waves interfere destructively, what is the longest possible value for the wavelength? Assume the light is visible light (400-700 nm) and keep three significant figures in your calculation.

Q : Find equations relating heat flow through bottom of pan

Draw a picture showing the dimensions of the pan, heat flowing through the bottom of the pan and the heat transferred from the bottom of the pan to the bulk of the liquid.

Q : Standard deviation of the random variable

Q : Calculate the maximum angular displacement

A periodic torque with a maximum value of 1.0 N-m at a frequency of 5.0 rad/s is applied to a flywheel suspended from a wire. the flywheel has a moment of inertia of 0.10 kg-m^2 and the wire has a stiffness of 1 N-m/rad.

Q : Energy stored within the coil

For current I = 6A being passed thru the inductor, calculate (a) magnetic field inside the coil, (b) energy stored within the coil and (c) energy density inside the coil.

Q : Determine the boundary work done during the process

A piston-cylinder device initially contains 0.25 kg of nitrogen gas at 130 kPa and 180°C. The nitrogen is now expanded isothermally to a pressure of 80 kPa. Determine the boundary work done during this process.

Q : Draw two processes on pv diagram with respect to vapor dome

Determine the temperature, in degrees Celsius, and the enthalpy at state 3. Sketch the two processes on a Pv diagram with respect to the vapor dome.

1922805

Questions
Asked

3,689

Active Tutors

1434350

Questions
Answered

Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!

ask Question

Request for Solution File

Ask an Expert for Answer!!

Basic Statistics: Standard deviation of the random variable

Reference No:- TGS0732380

Have a Question? (oR Write a Review)

Recent Questions Asked Basic Statistics

Q : Determine whether the force and couple system shown

Q : Confidence level does this interval represent

Q : What is the longest possible value for the wavelength

Q : Find equations relating heat flow through bottom of pan

Q : Standard deviation of the random variable

Q : Calculate the maximum angular displacement

Q : Energy stored within the coil

Q : Determine the boundary work done during the process

Q : Draw two processes on pv diagram with respect to vapor dome

Examine historical literature to the most current period

Problem regarding the america youth and social media

Discuss children diagnosed with developmental disabilities

Review a social, behavioral, or cultural factor

What is a behavioral indicator related to family

Discuss social worker working with foster children

How teenagers in an impoverished urban area spend their time

Request for Solution File

Ask an Expert for Answer!!

Basic Statistics: Standard deviation of the random variable

Reference No:- TGS0732380

Recent Questions Asked Basic Statistics

Q : Determine whether the force and couple system shown

Q : Confidence level does this interval represent

Q : What is the longest possible value for the wavelength

Q : Find equations relating heat flow through bottom of pan

Q : Standard deviation of the random variable

Q : Calculate the maximum angular displacement

Q : Energy stored within the coil

Q : Determine the boundary work done during the process

Q : Draw two processes on pv diagram with respect to vapor dome

Asked Questions