The distribution of the amount of money spent by students on textbooks in a semester is...
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mean of 452 and a standard deviation of 35. According to the standard deviation rule, approximately 68% of the students spent between $ and $ on textbooks in a semester.
Homework Answers
In statistics the empirical rule for Normal distribution states that approximately 68% of the data lies within 1 standard deviation within the mean.
Mean , u = 452
Standard deviation , s = 35
u + s = 487
u - s = 417
approximately 68% of the students spent between 417 and 487 on textbooks in a semester.
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The distribution of the amount of money spent by students on
textbooks in a semester is...
The distribution of the amount of money spent by students on textbooks in a semester is...
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mean of 391 and a standard deviation of 29. According to the standard deviation rule, approximately 95% of the students spent between $ and $ on textbooks in a semester.
The distribution of the amount of money spent by students on textbooks in a semester is...
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mean of: μ= 480 and a standard deviation of: σ= 39. According to the standard deviation rule, almost 0.15% of the students spent more than what amount of money on textbooks in a semester?
The distribution of the amount of money spent by students on textbooks in a semester is...
The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mean of: μ = 487 and a standard deviation of: σ = 30. According to the standard deviation rule, almost 0.15% of the students spent more than what amount of money on textbooks in a semester?
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The distribution of the amount of money spent by students on textbooks in a semester is approximately normal in shape with a mean of 391 and a standard deviation of 29. According to the standard deviation rule, approximately 95% of the students spent between $ and $ on textbooks in a semester.
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You are interested to test if the average amount spent on textbooks by McMaster students is lower than $460 per semester. You take a random sample of 801 students at McMaster and find that students in your sample spend on average $495.2 on textbooks per semester. If the standard deviation of the sample, s, is $104.47, calculate the associated test statistic (t-statistic) for this test. Note: 1- Round your intermediate numbers to 4 decimal places. 2- Round you final answer...
Please help with the following, I have already done most of
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