Please solve question 16 and 21

QUESTION 16 The mean height of five friends is 165 cm. The heights of the first four are 162, 178, 170 and 182. What is the height of the fifth one? Round your to the nearest whole number. QUESTION 17 A bank branch located in a commercial area has the business goal of developing an improved process for serving customers during the noon-to-1:00 p.m. lunch period. The waiting time, in minutes, collected from a sample of 10 customers during this hour, are shown below 1.6 1.2 1.5 4.3 3.8 2.7 3.9 4.1 1.3 4.6 Compute the following measures (Round your answers to one decimal place): 2.9 Mean 3.3 Median 3.4 Range 14 Standard deviation QUESTION 18 Consider a dataset with 10 values. Suppose the highest value is increased by 20 and the lowest is decreased by 20. Which of the following measure(s) would change? . Standard deviation Median only Mean and Median Mean only QUESTION 19 The number of monthly complaints received by a well known company last year is shown below: 18 28 30 37 21 23 32 42 36 25 39 33 Find the five-number summary 18. 23, 32, 37, 42 18, 23, 31, 37, 42 18, 25, 31, 37, 42 18, 23, 30, 36, 42 QUESTION 20 Mariam has randomly selected 500 ZU students for a survey. She found that the mean time spent on social media per day is 115 minutes and the median is 144 minutes. One would expect this distribution to be symmetric bell shaped right skewed left skewed QUESTION 21 4 points What is the value of the mean if a distribution has a coefficient of variation of 14% and a standard deviation of 1.9? If needed, round your answer to two decimal places. QUESTION 22 3 p Which measure of central tendency is not sensitive to the presence of extreme values