If you search statistics

homework Answersin Australia, Now visitAssignmenthelpausand get solution of Educational Statistics 7030 Homework Question.

**Statistics Homework Question And Solution**

**Course Code: EDUC 7030**

**Course Title: Educational Statistics**

**Task:**

Instructions: For computations, show all work and circle final answers. Not showing work is subject to point reduction.

1. The null hypothesis is the hypothesis that

- there is no difference
- there is a difference
- there may be a difference
- none of the above

A survey researcher hypothesized the mean income in Memphis as $42,000. The population mean income in Memphis is, in fact, $42,000, but the survey researcher rejects the hypothesis.

2. What type of error did this survey researcher make?

- Type I error
- Type II error
- Sampling error
- none of the above

3. Statistical estimation refers to

- inferring from the sample statistics to the population parameter
- deducting from the sample statistics to the population parameter
- inferring from the population parameter to the sample statistics
- deducting from the population parameter to the sample statistics

4. The smaller the standard error of the mean,

- the smaller the degree of freedom
- the wider the confidence interval
- the closer the sample mean is zero
- the greater the statistical precision

5. If the level of significance is .01, the chance of making a Type I error is

- 99%
- 90%
- 10%
- 1%

6. When other conditions are held constant,

- the .95 CI is wider than the .99 CI
- the .99 CI is 1 ½ time wider than the .95 CI
- the .95 CI fits within the .99 CI
- the .95 CI is .95 is the same as the .99 CI