According to an IRS study, 30% of taxpayers can prepare, copy, and electronically file a 1040 tax form between 2.0 and 2.5 hours. A consumer watchdog agency selects a random sample of 30 taxpayers. What is the probability that, in a random sample of 30,50% or more taxpayers complete form 1040 between 2.0 and 2.5 hours?
Test the conditions necessary to apply the central limit theorem. Are they satisfied?