Question: I've been working on this problem and keep getting it wrong. Please help. using a scientific calculator. I'm doing .75(1-.75) divided by 56 and then

I've been working on this problem and keep getting it wrong. Please help.

using a scientific calculator. I'm doing .75(1-.75) divided by 56 and then rounding that to four decimal places. I am getting 0.05786375624 and then rounding to .0579, which is wrong.

In a recent year, the Better Business Bureau settled 75% of complaints they received. (Source: USA Today, March 2, 2009) You have been hired by the Bureau to investigate complaints this year involving computer stores. You plan to select a random sample of complaints to estimate the proportion of complaints the Bureau is able to settle. Assume the population proportion of complaints settled for the computer stores is the 0.75, as mentioned above. Suppose your sample size is 56. What is the probability that the sample proportion will be 2 or more percent below the population proportion?

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