Remaining Time: 00:54 35 For a random sample of n = 214 adults in a survey, here is a summary of responses to "How long did you sleep last night?" NN N Variable n Mean Std Dev. Sleep 214 7.01 1.75 Which of the following gives an approximate 95% confidence interval for the mean hours of sleep the previous night in the population represented by the sample? 7.01 + 1.96 x 1.75 7.01 + 1.96 x 0.12 7.01 + 1.96 x 0.01 7.01 + 1.96 x 214 7.01 + 1.96 x 0.09