Explore BrainMass

### Explore BrainMass

Expert Profile

# Changping Wang

103300
May 2003
• Responses: 7552
• Library Solutions: 4536

## Education

• BSc , Wuhan Univ. China, 1989
• MA, Shandong Univ., 1992

## Subjects

• Mathematics
• Statistics
• Physics

## Solution Library

### I need help matching statistical symbols and definitions

I need your HELP with the matching of STATISTICAL SYMBOLS & DEFINITIONS

DEFINITION

1.The average of the squared deviation scores from a distribution menas.
2. Midpoint in the distribution of numbers.
3. It has to do with the accuracy and precision of a measurement procedure.
4.Examines if a READ MORE Â»

Statistics / Hypothesis Testing » 74518

### Statistics Parametric and Nonparametric Data Identification Assignment

1. A manufacturer produces a batch of memory chips (RAM) and measures the mean-time-between-failures (MTBF). The manufacturer then changes a manufacturing process and produces another batch and again measures the MTBF. Did the change to the process improve the MTBF?

2. From a written survey whe READ MORE Â»

Statistics / Hypothesis Testing / Nonparametric Tests » 105498

### Probability Distributions

(See attached files for full problem description)

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Using our data set from Unit 1, compose an email to the head of the American Intellectual Union which discusses the following:
1. How you would use the concept of probabilities to apply to profiles for hiring more satisfied individuals? Job READ MORE Â»

Statistics / Probability » 67994

### Are the Three Treatment Means Equal?

Given the following sample information, test the hypothesis that the treatment means are equal at the .05 significance level.

a. State the null hypothesis and the alternative hypothesis.
b. What is the decision rule?
c. Compute SST, SSE, and SS total.
d. Complete an ANOVA table.