Avideo website would like to test the hypothesis that the standard deviation for the length of an online video watched by a user is more than 2 minutes. a random sample of 21 people who watched online videos was selected. the sample standard deviation for the length of the video was found to be 2.5 minutes. what is the number of degrees of freedom for this hypothesis test?

o= 4(i) +3

step-by-step explanation:

o is your output value and i is your input value. so, for example, if we stuck 7 in as our input, we would first multiply by 4 ( pemdas ), which equals 28. then we would add 3 to 28, for a total output of 31. this may not be a graph, but, it is a way to solve your formula..

what is the approximate angle of acb if abc is 25cm and the length of segment bc is 15

step-by-step explanation:

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