Answer:

Step-by-step explanation:
The margin of error is computed using the formula:

The critical of <em>z</em> for 95% confidence level and 90% confidence level are:

*Use a <em>z</em>-table.
The sample size is n = 44.
Compare the MOE for 95% confidence level and 90% confidence level as follows:


I believe the answer is B
Answer:
57709
Step-by-step explanation:
b. -2.5 × 10-4 is the answer