A value such that at least 85% of the data are below and no more than \"15% are above the value, is called 0 Median D Upper Quartile 0 His 0 P15 0 Lower Quartile 0 None of the above. An e-business manager wants to test the claim that the average number of complaints on Monday exceeds 3?. Randome selecting T Mondays she calculated the sample mean and the sample standard deviation. From a previous research, it is known that the population of Monday complaint numbers is approximately normally distributed. What distribution should the manager use to test the claim? 0 Student (t) distribution 0 Binomial distri bution 0 Normal (2) distribution 0 Chi-Square (xi) distribution 0 F distribution 0 None of the above. An ebusiness manager wants to estimate the mean exposure to a certain type of internet ads. Originally she constructed a 85% confidence interval and then increased the condence level to 90%. Choose the correct statement. 0 The confidence inte rvat became longer. 0 The confidence interval didn't change. O The confidence interval became shorter. OThere is no relation between the length of the confidence interval and the confidence level. O None of the above