MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 2. [-12 Points) DETAILS DIEZSTAT3 5.E.030. Consider the diamond...
In Exercise 5.28, we discussed diamond prices (standardized by weight) for diamonds with weights 0.99 carats and 1 carat. See the table for summary statistics, and then construct a 95% confidence interval for the average difference between the standardized prices of 0.99 and 1 carat diamonds. You may assume the conditions for inference are met.
13. (-/1.13 Points) DETAILS DEVORESTAT7 7.P.044. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The amount of lateral expansion (mils) was determined for a sample of n = 6 pulsed-power gas metal arc welds used in LNG ship containment tanks. The resulting sample standard deviation was s - 2.88 mils. Assuming normality, derive a 95% CI for o? and for o. (Round your answers to two decimal places) Ct for 02 ( mils? Cl foro mils You may need to use...
2. [-/10 Points] DETAILS DEVORESTAT9 9.E.046. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER As part of a larger project to study the behavior of stressed-skin panels, a structural component being used extensively in North America, an article reported on various mechanical properties of Scotch pine lumber specimens. Data on the modulus of elasticity (MPa) obtained 1 minute after loading in a certain configuration and 4 weeks after loading for the same lumber specimens is presented here. Observation 1 min 1...
16. [-/1 Points] DETAILS JKESTAT11 9.E.043. MY NOTES ASK YOUR TEACHER Use a computer or calculator to find the p-value for the hypothesis test. (Give your answer correct to three decimal places.) Ho: M = 32, Ha: H > 32, n = 17, = 32.8, s = 3 You may need to use the appropriate table in Appendix B to answer this question.
1. [-/1 Points] DETAILS SCALCCC4 1.7.005. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider the parametric equations below. x = 5t - 2 y = 3t + 1 (a) Sketch the curve by using the parametric equations to plot points. Indicate with an arrow the direction in which the curve is traced as t increases. (Do this on paper. Your instructor may ask you to turn in this work.) (b) Eliminate the parameter to find a Cartesian equation of the...
9. [-18 Points] DETAILS WANEFMAC7 5.1.038.NVA 0/20 Submissions Used MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Suppose the following table shows median home prices, in thousands of dollars, in four regions of a country in May 2013, as well as the year-over-year changes in 2014 and 2015. Northeast Midwest South West May 2013 275 167 180 275 Change in 2014 -13 6 18 Change in 2015 12 16 15 30 Use matrix algebra to find the median home price, in...
5. -12 points DevoreStat9 5.E.053. My Notes Ask Your Teacher Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.5. (Round your answers to four decimal places.) (a) If the distribution is normal, what is the probability that the sample mean hardness for a random sample of 9 pins is at least 51? (b) What is the (approximate) probability that the sample mean hardness for a random...
2. (-/2 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Consider the following figure. h (a) The tank shown is full of water. Given that the water has a density of 1000 kg/m3, find the work required to pump the water out of the spout. (Assume r = 3 m and h = 1 m. Use 9.8 m/s2 for g.) J (b) What if the tank is half full of oil that has a density of 900 kg/m3? Need...
MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER 5. (-/1 Points] DETAILS LARCALC111.4.032. Discuss the continuity of the function. f(x) = *2 - 9 x + 3 fis discontinuous at x = у 가 6H SH 41 3 2 1 X -7-6-5-4-3-2 1 2/3 4 5 -4 -5 -65 -7 Need Help? Read It Talk to a Tutor
5. [-/1 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Due to a weak connection, there is a break in the circuit (shown below) between points a and b. If R1 = 3.73 12, R2 = 1.892, and R3 = 14.712, and the two batteries &, and have voltages of 20.0 V and 6.50 V respectively, find the potential difference Vab. Be sure to include the sign of the potential difference. Vab = Vb - Va= V "+ R1...