Posts by pokwang
Total # Posts: 2
A survey was conducted to determine the proportion of male and female respondents who are in favor of a sales training program of a bottling company. 120 out of 400 males and 130 out of 500 females are in favor of the issue. Is there a significant difference in the proportion ...
It is known from the records of the City Schools that the standard deviation of Algebra scores is 6.0. A sample of 200 students from the system was taken and was found out that the sample mean score is 75. Previous tests showed the population mean to be 70. Is it safe to ...