Hyopthesis testing and z-distribution of new process

Reference no: EM13113435

1. A new process has been implemented and it is stated to have an average cycle time of 120 seconds. A sample of 50 cycles yielded an average cycle time of 115 seconds, with a standard deviation of 2 seconds.

A. Set up the null and alternative hypothesis

B. Test your hypothesis using a level of significance of 0.05

A new process has been implemented and it is stated to have an average cycle time of 120 seconds. A sample of 50 cycles yielded an average cycle time of 115 seconds, with a standard deviation of 2 seconds.

A. Set up the null and alternative hypothesis

B. Test your hypothesis using a level of significance of 0.05

2. A. Define the Z distribution

B. Find Z if X = 980, u = 1000, The standard deviation is 50, and the number of samples is 49.

Reference no: EM13113435

Questions Cloud

Calculate the standard enthalpy of formation of octane : Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2C8H18(l) + 25O2(g) ? 16CO2(g) + 18H2O(l) ?H°rxn = -11,020 kJ/mol. Given that ?H°f[CO2(g)] = -393.5 kJ/mol

State the decision rule : A sample of 40 ovservations is selected from one population. The sample mean is 102 and the sample standard deviation is 5. A sample of 50 observers is selected from a second population.

Statistical test practice : This is my own made up problem. I just want to learn which test would I use t,z, or Chi and HOW do I go about doing it.

Calculate the mass of agno3(s) that must be added : Calculate the mass of AgNO3(s) that must be added to 0.500 L of a solution of 0.154 M NaClsolution to precipitate ‘all' of the chloride ion. The ‘all' means that we want to add the same number of moles of silver ion.

Hyopthesis testing and z-distribution of new process : A new process has been implemented and it is stated to have an average cycle time of 120 seconds. A sample of 50 cycles yielded an average cycle time of 115 seconds, with a standard deviation of 2 seconds.

How many millimoles of non-limiting reactant remain unused : If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.538 grams of iron and 13.0 mL of 0.40M copper(II) sulfate react to form as much product as possible.

Qualitaitve research-grounded theory : The topic I am treating now is based on using qualitative analysis based on grounded theory to investigate the topic "Mature student studying at University".

Calculate the total pressure of the mixture : A gas mixture being used to simulate the atmosphere of another planet consists of 324 mg of methane, 217 mg of argon, and 228 mg of nitrogen.

Hypothesis testing and calculating sample size : What is the required sample size if you need to estimate the number of workers in the United States who are highly satisfied with their job and you want the estimate to be within 2 percentage points of a 96% confidence interval.

User Account

All Pages