Under a "scatter diagram" there is a notation that the coefficient of correlation is 0.15. What does this mean? O one-fifteenth of one variable is caused by the other variable O one-fifteenth of the variance of one variable is shared with the other variable O plus and minus 15% from the means includes about 68% of the cases O on a scale from -1 to +1, the degree of linear relationship between the two variables is +0.15A coin turned up heads 5 out of 5 times. Test Ho: p = 0.5. Coin is evenly weighted. Versus Ha: p # 0.5. Coin is not evenly weighted. (Write your answer as a decimal). p-value =