A sample with a mean of M=50 and a standard deviation of s=12 is being transformed into z-scores. After the transformation, what is the standard deviation for the sample of z-scores?

A group of students are gathering data in a repeated measurement experiment. The collected data so far is listed below. What is the uncertainty of the collected data? 4.2, 4.2, 4.2, 4.2, 4.2, 4.2 0.2 0.0 0.5 0.1

Sample you are using is Tin 1.Calculation of density of cylindrical objectMass of cylindrical object with hook 35.943 gMass of hook1.250 gMass of cylinder without hook Volume of cylinder without hook Density of your object (without hook) Density of metal given in Table 1 g cm3 g/cm3 g/cm3Percent error of your density determination((exp erimental value theoretica l value) x100  % errortheoretica l value Table 1. Densities of several substancesSymbol on bottom of cylinderMetalDensity (g/cm3)CCopper8.92AAluminum2.70TTin7.28ZZinc7.14SSteel7.83

A new car dealer calculates that the dealership must average more than 4.5% profit on sales of new cars. A random sample of 81 cars gives the following result.Sample Size = 81Sample Mean = 4.97% Sample Standard Deviation = 1.8%Does the sample data provide evidence to conclude that the dealership averages more than 4.5% profit on sales of new cars (usinga = .10)?