1) You test a new drug to reduce blood pressure. A group of 10 patients with high blood pressure report thefollowing systolic pressures (measured in mm Hg):ySbefore medication: 178 111 142 134 151 159 172 188 124 119147.826.30after medication: 173 109 142 133 150 158 168 183 119 114144.925.90change:52011145 5 52.92.079a) Calculate a 90% CI for the change in blood pressure.b) Calculate a 99.9% CI for the change in blood pressure.c) Does either interval (the one you calculated in (a) or (b)) include 0? Why is this important?d) Now conduct a one sample t-test using μ = 0, and α = .10. Are the results consistent with (a)? Whyor why not? Make sure you understand this.e) Finally, conduct a one sample t-test using μ = 0, and a = .001. Are the results consistent with (b)?Why or why not? Make sure you understand this.

a) (1.567,4.233)b) (0.914,0.4886)c) d) e) answers provided in explanation sectionExplanation:

Answered: 1) You test a new drug to reduce blood…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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b) Given P = W²H.If errors up to 2% and 1% are possible in the measured value of W and H respectively, then find the percentage error in the calculated value of P.
Determine upper and lower estimates of how much water leaked from the water line during the hour.
The temperature reading from a thermocouple placed in a constant-temperature medium is normally distributed with mean u, the actual temperature of the medium, and standard deviation o. n USE SALT What would the value of o have to be to ensure that 95% of all readings are within 0.8° of µ? (Round your answer to four decimal places.) You may need to use the appropriate table in the Appendix of Tables to answer this question.
Based on the image attached, it shows monthly wind speed data (measured in m/s) was obtained. The researcher claimed that the average wind speed distribution is less than 12m/s.
Consider the accompanying observations on stream flow (1000s of acre-feet) recorded at a station in Colorado for the period April 1-August 31 over a 31-year span. 150.58 66.24 117.64 89.59 204.91 108.91 185.36 210.07 109.11 117.70 285.37 280.55 299.87 58.86 100.85 94.33 125,86 302.74 311.13 151.32 247.11 203.24 127.96 330.33 114.79 145.11 262.09 200.19 493.80 111.78 133.86 An appropriate probability plot supports the use of the lognormal distribution as a reasonable model for stream flow. (a) Estimate the parameters of the distribution. [Hint: Remember that X has a lognormal distribution with parameters u and o? if In(X) is normally distributed with mean u and variance o2.] (Round your estimate for the mean to three decimal places, and round your estimate for the variance to four decimal places.) 62 = (b) Use the estimates of part (a) to calculate an estimate of the expected value of stream flow. [Hint: What is E(X)?] (Round your answer to two decimal places.) thousand acre-feet
Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM. Find the values of d minus and S sub-d. In general, what does represent? please show using statcrunch when needed Temperature (F) at 8 AM Temperature (F) at 12 AM98.2 98.899.2 99.897.4 97.597.9 97.797.6 97.7
The annual flows, in cubic meters per second, at the Weldon River at Mill Grove, Missouri for the period 1930 to 1960 are averaged as follows: 3.06 1.52 16.00 2.78 1.15 13.39 2.74 6.16 1.21 5.90 4.06 2.66 11.29 8.46 7.04 12.51 10.91 16.09 3.46 4.28 6.92 11.35 6.95 3.23 18.70 3.75 1.25 2.063.83 18.02 14 .41Fit the lognormal distribution to this data. Comment on the goodness-of-fit to the lognormal distribution.
The shelf life of a high-speed photographic film is being investigated by the manufac- turer. The following data are available (in days). 126 129 134 141 131 132 136 145 116 128 130 162 125 126 134 129 134 127 120 127 120 122 129 133 125 111 147 129 150 148 126 140 130 120 117 131 149 117 143 133 (a) Construct a histogram and comment on the properties of the data. (b) Consider the quantity ₁ (xi - a)². For what value of a is this minimized? (c) Now consider the quantity 1 x - al. What value of a that minimizes this?

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