Explain the difference between testing a single mean

Reference no: EM13241209

Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means? When can the sample standard deviations s 1 and s 2 be used in place of the population standard deviations s 1 and s 2 ?

Reference no: EM13241209

Questions Cloud

What proportions of the customers have monthly balances : A bank has determined that the monthly balances of savings accounts of its customers are normaly distributed with an average balance of $1200 and standard deviation of $250.

What is probability that he or she will be a problem gambler : What is the probability that he or she will be a problem gambler who does not play poker machines (rounded to 3 decimal places)?

What are the 5 steps involved in hypothesis testing using : What are the 5 steps involved in hypothesis testing using the traditional/classical method; Can you use a simple real world example to explain it.

What is the exact current in register : A 211-? and a 221-? resistor are connected in series across an unspecified power supply, what is the exact current (in A) through the 221-? resistor

Explain the difference between testing a single mean : Explain the difference between testing a single mean and testing the difference between two means. What two assumptions must be met when one is using z test to test differences between two means?

Explain the painting would have a similar impact on viewers : Explain whether you think Manet's Olympia was meant to shock the viewrs of his time and why. Explain whether the painting would have a similar impact on viewers.

Including residuals and standardized residuals : Randomly chosen circulated nickels were weighed by statistics student Dorothy Duffy as an independent project. Nickels were weighed on a Mettler PE 360 Delta Range scale, accurate to 0.001 gram. The coin's age is the difference between the current ye..

How much work did the motor of the crane do : A crane at a construction site lifts a concrete block with a mass of 440 kg from the ground to the top of a building with a height of 15.0 m

Probability that he or she is a coalition voter : What is the probability that he or she is a Coalition voter (rounded to 3 decimal places)?

User Account

All Pages