![subject](/tpl/images/cats/User.png)
Engineering, 23.05.2021 21:30 whocaresfasdlaf9341
Define a null hypothesis about the standard deviation of the population and a one-sided (lower or upper) alternative hypothesis. Here, make an educated guess for the value of the hypothesized standard deviation σ0. Test whether your null hypothesis against the alternative hypothesis. Use α = 0.01. Find the corresponding P-value (or the bounds for P-value) and derive conclusions about your hypothesis based on both P-value approach and critical region comparisons. Also explain whether your sample size is enough to ensure a power of test of 0.80.
Mean=28.975
Variance(sample)= 20.076
Standard deviation(sample)=4.481
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Engineering
![question](/tpl/images/cats/User.png)
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?
Answers: 2
![question](/tpl/images/cats/User.png)
Engineering, 04.07.2019 18:10
Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.
Answers: 1
![question](/tpl/images/cats/User.png)
Engineering, 06.07.2019 02:30
An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?
Answers: 3
You know the right answer?
Define a null hypothesis about the standard deviation of the population and a one-sided (lower or up...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20
![question](/tpl/images/cats/mkx.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20
![question](/tpl/images/cats/biologiya.png)
Biology, 08.01.2021 23:20
![question](/tpl/images/cats/istoriya.png)
History, 08.01.2021 23:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 08.01.2021 23:20
![question](/tpl/images/cats/pravo.png)
![question](/tpl/images/cats/en.png)
English, 08.01.2021 23:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 08.01.2021 23:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20
![question](/tpl/images/cats/mat.png)
Mathematics, 08.01.2021 23:20