according to a college survery, 22% of all students work full time. find the mean for the number of students who work full time in samples of 16. round to the nearest tenth
how do we do this on a TI84 calculator
To find the mean for the number of students who work full time in samples of 16, you can use a TI-84 calculator. Follow these step-by-step instructions:
1. First, calculate the population mean by multiplying the percentage of students who work full time (22%) by the total number of students (assuming it's a large enough number to represent the population accurately).
Population mean = Percentage × Total number of students
Population mean = 0.22 × Total number of students
2. Divide the population mean by the sample size (16) to get the mean for the number of students working full time in samples of 16.
Sample mean = Population mean ÷ Sample size
Sample mean = (0.22 × Total number of students) ÷ 16
3. If you know the total number of students, you can substitute it into the equation. However, if you don't have that information, you can find the mean directly by keeping the equation in terms of the variable.
Sample mean = 0.22 ÷ 16 = 0.01375
4. To round the mean to the nearest tenth, round it to one decimal place.
Rounded sample mean = 0.01375 ≈ 0.0
Therefore, the mean for the number of students who work full time in samples of 16 is approximately 0.0.