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In: Statistics and Probability

a) According to the Ministry of Health, the height of Guinean travellers who were quarantined in...

a) According to the Ministry of Health, the height of Guinean travellers who were quarantined in Tamale for the novel coronavirus were normally distributed about a mean of 160cm and a standard deviation of 8cm. Find the probability that a traveller selected at random has
i) Height between 148cm and 175cm                                                                        ii) Height above 164cm                                                                                               iii) Height below 179cm                                                                                              
b) The average time taken for the nearest Covid-19 ambulance team to convey a patient showing symptoms to the nearest designated hospital follows the normal distribution about a mean of 60 seconds and a standard deviation of 8 seconds. If 200 patients were selected at random, how many of them could be taken to the hospital in
i) Less than 50 seconds                                                                                             ii) More than 64 seconds                                                                                           
c) The Shelf life of a particular dairy product is normally distributed with a mean of 12 days and a variance of 9 days. About what percentage of the products last between 13 and 16 days
                                                                                                                                                             
                                                                                                                                                         [Total: 20 Mark

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