A researcher studied the weight (in kg) of a sample of 25 el…
A researcher studied the weight (in kg) of a sample of 25 elderly individuals in a city. The population of weight is known to be normally distributed. The data are listed below: 73 81 77 65 88 92 78 84 90 71 69 83 75 95 86 72 68 88 91 77 85 79 94 76 82 Construct a 90% confidence interval for the population mean, population variance is unknown. TI-84 online