Bob and Larry wanted to develop a groundswell of marketplace demand for their store, so they used email to circulate a message among their family, friends, and customers for whom they had email addresses. What type of marketing is this

Aresearcher developing scanners to search for hidden weapons at airports has concluded that a new scanner isis significantly better than the current scanner. he made his decision based on a test using alpha equals 0.025 .α=0.025. would he have made the same decision at alpha equals 0.10 question mark α=0.10? how about alpha equals 0.01 question mark α=0.01? explain