Question: 1. When the confidence level is 90%, the Confidence coefficients is +-. Select one: a. 2.58 b. 1.645 c. 1.96 d. 1 2. Given the

1. When the confidence level is 90%, the Confidence coefficients is +-.

Select one:

a. 2.58

b. 1.645

c. 1.96

d. 1

2. Given the following data, find the margin of error. Your answer must be in two decimal places. Sample size = 100, Mean = 75, Standard Deviation = 20, 99% confidence

3. Given the equation 3y = 21x + 9, what is the slope?

4. Given the equation 9y = 18x + 9, what is the slope?

5. Using the following data, find the margin of error. Your answer must be in 3 decimal places. n=400, p = 0.75, 90% confidence

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