A random sample of 50 students at a large high school resulted in a 95 percent confidence interval for the mean number of hours of sleep per day of (6.73, 7.67). Which of the following statements best summarizes the meaning of this confidence interval?a. About 95% of all random samples of 50 students from this population would result in a 95% confidence interval that covered the true population mean number of hours of sleep per day. b. 95% of the students in the survey reported sleeping between 6.73 and 7.67 hours per day. c. 95% of the students in this high school sleep between 6.73 and 7.67 hours per day. d. A student selected at random from this population sleeps between 6.73 and 7.67 hours per day for 95% of the time.