A small company's net income for the first six months of the last year was 70 6504 the last six months of its year was 100000 what is the ratio of the first six months of the year to the last six months of the year in the simplest form? ​

Arandom sample of 45 observations results in a sample mean of 68. the population standard deviation is known to be 23 a. compute the margin of error at a 959% confidence interval. b. compute the 95% confidence interval for the population mean c. compute the 90% confidence interval for the population mean. d. compute the 75% confidence interval for the population mean