Question 2 Six samples of five observations each have been taken of 80 kg concrete slabsproduced by a machine and the results is showed below.a) Please choose the suitable control charts to test whether or not the process is incontrol.b) A new sample results in the following slab weights: 81.0, 81.0, 80.8, 80.6, and 80.5.Judge whether or not the process is in control based on the data (including new sampledata).c) Based on the data in part b), the specification for the concrete slabs is 78kg to 81kg, isthe specification being met? Using the formulation o=A₂R (n is sample size and A2refers to tables in Week 8 slide) to estimate the standard deviation from average range.179.278.880.078.481.0280.578.781.080.480.1379.679.480.480.380.8Sample478.979.479.779.480.6580.579.680.480.878.8679.780.680.580.081.1

Answered: Image /qna-images/answer/d96df9ca-9869-4f0f-b8dd-a143a175daf8.jpg

Answered: a) Please choose the suitable control…

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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Question 5 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below: Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 Formulate the null and alternative hypotheses that can be used to decide whether the new filtration system could be superior. A. H0: the hypothesized mean is less or equal to zero Ha: the hypothesized mean is greater than zero B. H0: the hypothesized mean is greater or equal to zero Ha: the hypothesized mean…
Question 7 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below: Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 If the null and alternative hypotheses can be used to decide whether the new filtration system could be superior. Calculate the standardized test statistic. A. t_statistic = -21.2196 B. t_statistic = 21.2196 C. t_statistic = -2.1219 D. t_statistic = -2.1220
Question 20 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below, Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 Formulate the null and alternative hypotheses that can be used to decide whether the new filtration system could be superior. H0: the hypothesized mean is greater zero H0: the hypothesized mean is less than zero Ha: the hypothesized mean is less than zero Ha: the hypothesized mean…
Question 15 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below, Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 The null and alternative hypotheses are being used to decide whether the new filtration system could be superior. At 5%% level of significance, find the critical value (s). 1.833 -1.833 1.645 -1.645
Question 13 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below, Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 If the null and alternative hypotheses can be used to decide whether the new filtration system could be superior. Calculate the standardized test statistic.
Question 3 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below, use the 0.05 level of significance in determining whether the new filtration system could be superior. Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 What is your conclusion? There is enough evidence to support the claim There is no enough evidence to support the claim There is enough evidence to reject the claim There is no enough…
Question 1 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below, use the 0.05 level of significance in determining whether the new filtration system could be superior. Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 Do reject or fail to reject H0? Fail to reject H0 because t-statistic is more than t-critical Fail to reject H0 because t-statistic is less than t-critical Reject H0 because t-statistic is more…
Question 11 A trucking firm is considering the installation of a new, low-restriction engine air filter for its long-haul trucks, but doesn’t want to make the switch unless the new filter can be shown to improve the fuel economy of these vehicles. A test is set up in which each of 10 trucks makes the same run twice once with the old filtration system and once with the new version. Given the sample results shown below, use the 0.05 level of significance in determining whether the new filtration system could be superior. Truck Number Current Filter (mpg) New Filter (mpg) 1 7.6 7.3 2 4.1 7.2 3 10.4 6.8 4 6.9 10.6 5 5.6 8.8 6 7.9 8.7 7 5.4 5.7 8 5.7 8.7 9 5.5 8.9 10 5.3 7.1 Use the 0.05 level of significance to determine whether the new filtration system could be superior. A. There is enough evidence to support the claim B. There is no enough evidence to support the claim…
question 4 Chen et al. (2000) examined the foraging behaviour of northern elephant seals (Mirounga angustirostris) that breed along the west coast of Mexico and the USA. They attached platform satellite transmitter terminals (PTTs) to 22 male seals and recorded, for each seal, the distance (km) to its main feeding area offshore and the amount of time (days) it spent at the feeding area. The results are presented below: What two null hypotheses are being tested with the output shown above? What statistical conclusions would you draw about these hypotheses? Complete the regression equation by filling in the blanks (to the nearest 3 decimal places). duration = + * distance What is one biological interpretation of this relationship between duration and distance ? What % of the variation in duration at main feeding area was explained by distance to feeding area?
Section 9.1 Question #7 Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 35 of the 42 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 85 of the 99 subjects developed rhinovirus infections. Use a 0.05 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of subjects treated with echinacea and the second sample to be the sample of subjects treated with a placebo. What are the null and alternative hypotheses for the hypothesis test? A. H0: p1 = p2 H1: p1 > p2 B. H0: p1 ≠ p2 H1: p1 = p2 C. H0: p1 ≤ p2 H1: p1 ≠ p2 D. H0: p1 = p2 H1: p1 < p2 E. H0: p1 = p2 H1: p1 ≠ p2 F. H0: p1 ≥ p2 H1: p1 ≠ p2 Identify the test statistic. z= ____________ (Round to two decimal places as needed.) Identify the…
question(8): A researcher was interested in the effect in the effect of job security on stress. The researcher recuited 10 pairs and seperated them into two groups, those who had job security, and those on a 1 year contract. The pairs were matched based on age, gender and education level. The researcher measured the stress hormone control through a salvia sample . Is this an independent study design?
QUESTION 21 We have randomly selected 30 students from Section 1 and 25 students from Sections 2 of MSCI course at Utoronto from the last term. We recorded their grades A,B, C, D, or F. If we do a test on this data at 5% significance level, write down the critical value

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