Ashley is interested in examining the relationship between the number of hours of sleep and depression as measured by the Beck Depression Scale. The Beck Depression Scale measures depression by summing scores on a survey with potential scores ranging from 0-63 with zero being not depressed and 63 being most depressed. Prior to the start of her research, Ashley must set an alpha level for her study. In nursing, what is the most commonly used alpha level and what does it signify? 0.05; there is a 5% chance of making a type I error 0.05; 5% of the time I am going to use random sampling 0.01; I will reject the null hypothesis 1% of the time 0.01; I am willing to accept 1% of the results