Suppose certain electronic components require gold leaf to produce - say with standard deviation " = 19 cm' and unknown mean. We want to test whether the mean amount of gold leaf required per component is 22 cm', and are given the information that for a particular sample of size 73 (supposed to be independent and identically distributed) we have sample mean 28 cm Given the above information (plus Ho, H1. the observed test statistic z and the P-value from the last three exercises), state your conclusion at the a - 0.05 level of significance. Tick ALL statements that are correct. We reject Ho O .We do not reject Ho Evidence suggests the true value of the mean amount of gold leaf required per component is not 22 . We do not have enough evidence to believe the mean amount of gold leaf required per component is not 22 0 The mean amount of gold leaf required per component is not 22 The mean amount of gold leaf required per component is 22 O w O 14.C Clear ~ 0 (7 () ENG 6:30 PM 23/10/2022