E 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, H, 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 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 The mean amount of gold leaf required per component is not 22 The mean amount of gold leaf required per component is 22 JA W P 14C Clear 4) ENG 6:30 PM 23/10/2022