Determining statistics-z score

Assignment Help Basic Statistics

Reference no: EM13106403

1. Assuming a normal distribution, What is the z-score associated with the second quartile?

2. Find the following:

P(z>2.43)

3. If we wish to have 95% confidence interval, what would be the value of the confidence coefficient?

4. In your own words, describe the relationship between the standard erro (of the mean) and maxium error.

5. In hypothesis testing, as the a level gets smaller, the level of confidence increases. T or F, and why or why not?

6. The calculated p-value for a hypothesis test is 0.084.

What decision about the null hypothesis would occur in the following:

The hypotheis test is completed at the 0.05 level of significance.

Reference no: EM13106403

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