## Finding the z-score, Applied Statistics

Assignment Help:
10. If a set of scores has a sample mean of 25 and a sample variance of 4, find the following:
a. the z-score for a raw score of 31
b. the z-score for a raw score of 18
c. the raw score for a z-score of -2.5
d. the raw score for a z-score of +.5

#### Method of moving average, what does it mean by moving average?

what does it mean by moving average?

#### Expected average time, Question: A car was machine washes each car in 5 min...

Question: A car was machine washes each car in 5 minutes exactly. It has been estimated that customers will arrive according to a Poisson distribution at an average of 8 per hour.

#### Simple linear regression, Simple Linear Regression   While correlati...

Simple Linear Regression   While correlation analysis determines the degree to which the variables are related, regression analysis develops the relationship between the var

#### O-give curves, real time applications on graphical representation of o-give...

real time applications on graphical representation of o-give curves

#### Double Exponential Smoothing, whats mean by Double Exponential Smoothing

whats mean by Double Exponential Smoothing

#### Difference in goals between pca and fa, In PCA the eigknvalues must ultimat...

In PCA the eigknvalues must ultimately account for all of the variance. There is no probability,'no hypothesis, no test because strictly speaking PCA is not a statistical procedure

#### Mathematical properties of arithmetic mean, Mathematical Properties ...

Mathematical Properties The sum of deviations of the items from the arithmetic mean (taking signs into account) is always zero, i.e.      = 0. The sum of

#### Standard deviation and variance, Explanation of standard deviation and vari...

Explanation of standard deviation and variance Describe the importance of standard deviation and variance, what they calculate and why they are required. Importance of char

#### Estimation error on apparent arbitrage, This question explores the effect o...

This question explores the effect of estimation error on apparent arbitrage opportunities in a controlled simulation setting. We simulate returns for N = 10 assets over T = 30 year

#### Make a decision about the claim, Make a decision about the given claim. Do...

Make a decision about the given claim. Do not use any formal procedures and exact calculation. Use only the rare event rule. Claim: A coin favors head when tossed, and there