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- 10. a.) Find the z-value such that 80 percent of the area under the standard normal curve lies between -z and z. b). Find the z value if the normal curve area to the right of z is 0.6449. is from N(0,1) de in a cmall town at California is 0.2 everyday, what is theWhich of these choices below would be the best choice to address such errors of measurement? a. Broaden the range (i.e., spread) between the control limits. b. Reduce the range between the specification limits. c. Reduce the spread between the control limits. d. Broaden the range between the specification limits. Choices c, and d are true (i.e., reduce the spread between the control limits and broaden the range between the specification limits).The power of the slope t-test is NOT determined by: A)direction of slope B) sample size C) effect size D) alpha
- D, E, F onlyIn this problem, assume that the distribution of differences is approximately normal. Note: For degrees of freedom d.f. not in the Student's t table, use the closest d.f. that is smaller. In some situations, this choice of d.f. may increase the P-value by a small amount and therefore produce a slightly more "conservative" answer. I need help with sketchng the distribution, (d) and (e)(Round up to the nearest whole number as needed.)
- In the distribution with u = 35 and o = 6, a score of X = 50 correspond to z =Given the following figures 5,12,6,3,8,11,15,9,12,15 calculate a measure of relative Kurtosis round to 2 decimals IIn a random sample of 765 adults in the United States, 122 of them said if they had to cover a $400 emergency expense, they would need to use a credit card and pay it back over time. a. what is the parameter being estimated b. what is the sample proportion (must show work)
- 4. Martin has hypothesized that the size and types of trees differ between valleys and higher elevations. He sets up a transect line in a wooded valley and randomly creates three 10 x 10 meter plots along the transect line, recording GPS coordinates for the northwest corner of each plot. He identifies and measures (diameter at breast height) every tree within the plots. He repeats this procedure in a wooded area on the ridge above the valley. Are Martin’s methods for identifying and measuring trees quantitative, qualitative, or semi-quantitative? Justify your reasoning.Determine the minimum sample size required when you want to be 95% confident that the sample mean is within one unit of the population mean and o=17.2. Assume the population is normally distributedYou obtained the following raw data when setting up a Bradford standard curve: BSA (mg/ml) Absorbancy 595nm 0 0.225 1 0.310 2 0.420 3 0.510 4 0.610 5 0.720 6 0.810 7 0.915 8 0.950 9 0.980 10 0.990 Set up a standard curve. What would the quality of the line-fit (R2 value) be if you do not exclude experimental outliers? (Give you answer to 4 decimal places)