According to the American time use survey, the typical American spends 154.8 mins (2.58 hours) per day watching television. Do internet users spend less time each day watching television? A survey of 50 Internet users results in a mean time watching television per day of 128.7 mins, with a standard deviation of 46.5 mins. Conduct the appropriate test to determine if internet users spend less time watching television at the (alpha)= 0.05 level of significance.
What calculator function do i need to use (TI-83 / TI-84) and What do i input where. Is it a Z-test or 1-ProbZTest or something elts?
10 points to whom ever gives me the first right answer !
What calculator function do i need to use (TI-83 / TI-84) and What do i input where. Is it a Z-test or 1-ProbZTest or something elts?
10 points to whom ever gives me the first right answer !
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For the sake of brevity, I'm going to assume all assumptions and conditions are met in order to perform a 1-sample T-test. We use a t-test because the population standard deviation is unknown.
On your calculator, you would need to use [Stat] > Tests > 1:T-Test...
Inpt should be set to Stats.
µ0 is the population mean (154.8 min)
x-bar is the sample mean (128.7 min)
Sx is the sample standard deviation (46.5 min)
n is the sample size (50)
We want to see if internet users spend less time, so we'll use µ < µ0.
On your calculator, you would need to use [Stat] > Tests > 1:T-Test...
Inpt should be set to Stats.
µ0 is the population mean (154.8 min)
x-bar is the sample mean (128.7 min)
Sx is the sample standard deviation (46.5 min)
n is the sample size (50)
We want to see if internet users spend less time, so we'll use µ < µ0.