please answer 6

6. DETAILS MENDSTAT15M 9.1.014. MY NOTES ASK YOUR TEACHER It is reported that the average or mean number of Facebook friends is 155. Suppose that when 50 randomly chosen Facebook users are polled regarding the number of their friends, the average number of their friends was reported to be x = 148 with a standard deviation of s = 29.3. Calculate the value of the z-statistic based on the sample mean, x. (Round your answer to two decimal places.) Z = Is this an unusual value of z? O Since the z-statistic is less than one standard deviation from the mean, it is a highly likely event, assuming Ho is true. O Since the z-statistic is between one and two standard deviations from the mean, it is a somewhat likely event, assuming Ho is true. O Since the z-statistic is between two and three standard deviations from the mean, it is a somewhat unlikely event, assuming Ho is true. O Since the z-statistic is more than three standard deviations from the mean, it is a highly unlikely event, assuming Ho is true