A researcher wants to estimate the average annual Jordanian per capita income in the range of plus and minus 50 dinars and with a confidence degree of 95%. The researcher knows through a study of...

A researcher wants to estimate the average annual Jordanian per capita income in the range of plus and minus 50 dinars and with a confidence degree of 95%. The researcher knows through a study of family expenses and income conducted by the Jordanian Department of Statistics that the income distribution follows the normal distribution: with a standard deviation of 450 dinars. Required

 What is the minimum sample size required for a procedure another study?

Extracted text: A researcher wants to estimate the average annual Jordanian per capita income in the range of plus and minus 50 dinars and with a confidence degree of 95%. The researcher knows through a study of family expenses and income conducted by the Jordanian Department of Statistics that the income distribution follows the normal distribution: with a standard deviation of 450 dinars. Required What is the minimum sample size required for a procedure Another study?