2. An experiment is done to investigate the impact of glass type and phosphor type on thebrightness of a television tube. The current (in microamps) required to achieve a givenbrightness level is the response variable measured. The information is presented in thetable below:Glass TypePhosphor Type1231281301291291311286286296291231261221236241226241236231In this experiment, state the hypotheses that are of interest.b. Using the analysis of variance, test the above hypotheses and draw conclusionswith a = 0.05.

Given data, Response variable : Brightness level of television tube

Answered: 2. An experiment is done to investigate…

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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An experiment was implemented to test the effectiveness of a new veterinarian product for dogs. Animals were randomly assigned to two treatments. Dogs on group treatment A received the new product and control dogs on group treatment B received a placebo. At the end of the experiment the concentrations of a certain hormone (ng/ml) was measured and the following data was obtained: DATA: Observation 1 2 3 4 5 6 Trt A 13.7 11.7 13.4 12.7 12.4 10.8 Evaluate Ho: MA UB ---against--- HA: MA # MB Trt B 13.8 14.6 12.3 13.8 10.7 1. What is the calculated "t" statistics? (round to the nearest hundredth; place the absolute value of "t" in the box below) 2. Given your "t" calculated indicate if you are going to reject or fail to reject the null hypothesis using an alpha=0.1 (reject/fail to reject; place your answer right beside the calculated "t" statistics. Do not leave a space between the two answers)
Endocrinology In Section 2.10, we described Data Set BONEDEN.DAT concerning the effect of tobacco use on BMD. Note: 2.38-2.40 Involve computing a new variable C. Compute C using the formula given and then use STATA to produce the output requested. 2.38. For each pair of twins, compute the following for the lumbar spine: A = BMD for the heavier-smoking twin − BMD for the lighter-smoking twin = x1 − x2 B = mean BMD for the twinship = (x1 + x2)/2 C = 100% × (A/B) Derive appropriate descriptive statistics for C over the entire study population. 2.39. Suppose we group the twin pairs according to the difference in tobacco use expressed in 10 pack-year groups (0–9.9 pack-years/10–19.9 pack-years/20–29.9 pack-years/30–39.9 pack-years/40+ pack-years). Compute appropriate descriptive statistics, and provide a scatterplot for C grouped by the difference in tobacco use in pack-years 2.40. What impression do you have of the relationship between BMD and tobacco use based on Problem 2.39?
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Question 4 of 6, Step 2 of 3 The manufacturer of a new eye cream claims that the cream reduces the appearance of fine lines and wrinkles after just 14 days of application. To test the claim, 10 women are randomly selected to participate in a study. The number of fine lines and wrinkles that are visible around each participant's eyes is recorded before and after the 14 days of treatment. The following table displays the results. Test the claim at the 0.05 level of significance assuming that the population distribution of the paired differences is approximately normal. Let women before the treatment be Population 1 and let women after the treatment be Population 2. 6/18 Correct Answer Number of Fine Lines and Wrinkles Before 12 10 10 13 11 After 13 11 8 11 9 14 15 Copy Data Step 2 of 3: Compute the value of the test statistic. Round your answer to three decimal places. 12 12 10 13 11 10 11 12 Tables Keypa
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T-Mobile Wi-Fi ? 1 9:55 AM • 36% Done 14 of 18 FOL FIL FLL M F O Update i studeri.desmas.comiactivitybuilider/student/8088bcoe08264d0cod3ee897#screentc-beabee6: a5ct-4575-a535-f32a107ab362 E Sian in P View Portrait Pro. O Nursing: Tracition. 6 Legin Sessien Exolration. b Seling Assotiwe. Car tetiny tho.. O Emeloymert Cemter Aups a ntourse Carncc. く 10 of 14 Next > Unit 4. Lesson 14: Using Normal Distributions for Exper. Destry Orceu Rescarchers are tagging sharks using two different types of devices and want to know if the devices affect the heart rate of tho sharks. They tag one aroup of 8 sharks with a small device that collects a small amount of data and thoy tag another group of 8 sharks with a larger device that collects a large amount of data. They then measure the mean heart rate of the different groups and find that the difference in means is 2.5 beats per minute. Rescarchers run 1,000 simulations regrouping the data into 2 groups at random and record the differences in means…
Fill in the blanks in the following source tables... Is F significant? If it is significant, at what alpha level?
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