I'm using 5 different screen times for my statistics and probability assignment. My 5 different screen time hours are 12,26,36,42,and 55. I have to use either statcrunch or a TI 83/ 84 calculator. I have to choose to use a t or z distribution with a 95% confidence level And know the level of confidence. I have to include my point estimate for my population mean and units. I have to use a standard deviation for screen users time will be 4 hours. I gotta do this within a margin of error 0.25 hours. While continuing using a 95% confidence level.

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