The operating expenses per process in a factory yearly are normally distributed with a population standard deviation of 24 thousand dollars and an unknown population mean. If a random sample of 20 processes is taken and results in a sample mean of 274 thousand dollars, find a 95% confidence interval for the population mean.

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

In a sample of 200 residents of georgetown county, 120 reported they believed the county real estate taxes were too high. develop a 95 percent confidence interval for the proportion of residents who believe the tax rate is too high. (round your answers to 3 decimal places.) confidence interval for the proportion of residents is up to . would it be reasonable to conclude that the majority of the taxpayers feel that the taxes are too high?

Anyone know? will mark brainliest if you're correct!