The average height of students at uh from an srs of 12 students gave a standard deviation of 3.1 feet. construct a 95% confidence interval for the standard deviation of the height of students at uh. assume normality for the data.

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

The table shows the webster family’s monthly expenses for the first three months of the year. they are $2,687.44, $2,613.09, and $2,808.64. what is the average monthly expenditure for all expenses?

Bella want to know what the students at her school think of her show. which is the best group to survey to find this information a. go to the mall and ask all of the students she recognizes from school b. ask her viewers to call in durning an episode of the show c. get a list of students at her school from the office and use a random number generator to pick 30 of them d. get a list of students at her school from the office and pick the first 30 students on the list