Past records indicate that 10% of online retail orders are fraudulent. Suppose 20 online orders are placed. What is the probability that none are fraudulent

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

Three coins are flipped. what is the probability that there will be at least two tails?

Place the following steps in order to complete the square and solve the quadratic equation,