How to solve it please !!

Popper 5 1) Rainwater was collected in water collectors at thirty different sites near an industrial basin and the amount of acidity (pH level) was measured. The mean and standard deviation of the values are 5.2 and 1.8 respectively. when the pH meter was recalibrated back at the laboratory, it was found to be in error. The error can be corrected by adding 0.2 pH units to all ofthe values and then multiply the result by 1.2. Find the mean and standard deviation ofthe corrected pH measurements. A) mean = 648; standard deviation = 0.36 B) mean = 2.24; standard deviation = 0.36 C) mean = 6.48; standard deviation = 2.16 D) mean = 2.24; standard deviation = 2.16 E) mean = 6.44; standard deviation = 2.36 2) John and Beth plan to visit a bookstore. Based on their previous visits to this bookstore, the probability distributions for the number of books they will bu is iven below. a.\" Probabili Number of books Beth will bu Assuming that John and Beth make their decisions to purchase books independently, what is the probability that a total of 0 books are purchased? a) 0.5500 b) 0.9500 0) 0.0500 d) 0.4500 6) 0.4000 3) A shipment of 17 televisions sets contains 4 defective sets. A hotel purchases 6 of these televisions sets. What is the probability that the hotel receives at least one of the defective sets? A) 0.4160 B) 0.5840 C) 0.0555 D) 0.8613 E) 0.1387