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- Use the following equation to prove that : If we multiply the data values by a constant (say, c), this will not affect the geometric mean. And give an example.Determine the best (according to sum-of-squares-measure) curve y = ax2 + bx + c, throughthe data above.A researcher collects data that represents the average number of hours of sleep in the last two nights by 8 depressed patients and 9 non-depressed patients. The researcher is interested in whether the two groups reliably differ in the amount of sleep they get. Use Jamovi to calculate t-obt and the p value.
- Consider the model y=-2.45x+7.18 derived from data between x=4 and x=10. What value of x represents interpolation of the data?Is the rectangle supposed to be 3 across the x-axis or is it 2 across the x-axis? Is the multiplier for average value 1/6? 1/(m*n)Determine the best (according to sum-of-squares-measure) curve y=ax2 through the data above.
- What is the t- value associated with 19° of freedom and 5% in a tail?An analysis of production rejects resulted in the following figures: (attached) Calculate Karl Pearson’s coefficient of skewness and comment on the results.A test statistic works like a Z-score in that it measures the distance between ________________ and __________________ in terms of ____________________.