MONH: 100OHO: H-100H: < 100OHO: # < 100H-100Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to fourdecimal places.)P-value-What can you conclude?O There is strong evidence that the true average strength is less than 100 MPa. The concrete should not be used.O There is not strong evidence that the true average strength is less than 100 MPa. The concrete should be used.Need Help?Read I The accompanying data is on cube compressive strength (MPa) of concrete specimens112.1 97.099.592.8 86.0 102.095.8 103.5 89.0 86.6USE SALT(a) Is it plausible that the compressive strength for this type of concrete is normally distributed?The normal probability plot is not acceptably linear, suggesting that a normal population distribution is not plausible.O The normal probability plot is not acceptably linear, suggesting that a normal population distribution is plausible.O The normal probability plot is acceptably linear, suggesting that a normal population distribution is plausibleThe normal probability plot is acceptably linear, suggesting that a normal population distribution is not plausible.(b) Suppose the concrete will be used for a particular application unless there is strong evidence that true average strength is lessthan 100 MPa. Should the concrete be used? Carry out a test of appropriate hypothesesState the appropriate hypotheses.OH = 100## 100OHJ-100H₂>100

Given data: 112.1 97 92.8 86 102 99.5 95.8 103.5 89 86.6

Answered: The accompanying data is on cube…

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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2.1% 13.6% Normal Distribution 34.1% 34.1% 13.6% 2.1% A) Using the neck sizes of the shirts of the 100 college students in the DO NOW - μ-20 inches o- 5inches Find the neck size of a student above 2 standard deviations above the mean. B) What percentile will Eric fall if he has a neck size of 30 inches?
Suppose a sample of O-rings was obtained and the wall thickness (in inches) of each was recorded. Use a normal probability plot to assess whether the sample data could have come from a population that is nomally distributed. 0.191 0.184 0.199 0.197 0.209 0.220 0.233 0.248 0.253 0.270 0 288 0.300 0.309 0.302 0.303 0.318 Click here to view the table of critical values. Cick here to view.page 1 of the standard normal distribution table. Click hece to view. paon 2 of the standard.notmal distribution table. Using the correlation coefficient of the normal probability plot, is it reasonable to conclude that the population is normally distributed? Select the corect choice below and fil in the answer boxes within your choice. (Round to three decimal places as needed.) OA. No. The correlation between the expected z-ncores and the observed data, does not exceed the oritical value, Therofore, it is not reasonable to conclude that the data come from a normal population. OB. Yes. The correlation…
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7 Z A simple random sample of size n=200 drivers with a valid driver's license is asked if they drive an American-made automobile. Of the 200 drivers surveyed, 123 responded that they drive an American-made automobile. Determine if a majority of those with a valid driver's license drive an American-made automobile at the a= 0.05 level of significance. CEE D. The normal distribution because the parameter is a proportion, p, and the model conditions are satisfied. Calculate the test statistic. Test statistic 3.25 (Round to two decimal places as needed.). Calculate the P-value. P-value= (Round to three decimal places as needed.) Clear all Check answer Help me solve this View an example Get more help. 5:52 PM 6/18/2022 a 8: A Type here to search #t @ 2 S X 3 E D C 4 R F V 5 T G 6 B H 7 C N 8 J M 9 KI O P (?) 97°F Mostly sunny backspace home num 7
A used car dealer says that the mean price of a three-year-old sports utility vehicle is $21,000. You suspect this claim is incorrect and find that a random sample of 21 similar vehicles has a mean price of $21,848 and a standarc deviation of $1985. Is there enough evidence to reject the claim at a = 0.05? Complete parts (a) through (e) below. Assume the population is normally distributed. (a) Write the claim mathematically and identify Ho and Ha. Which of the following correctly states Ho and H2? O A. Ho: =$21,000 B. Ho: H= $21,000 Ha: H#$21,000 OC. Ho: H > $21,000 Hgius $21,000 HaiH>$21,000 OD. Ho: H#$21,000 HaiH=$21,000 E. Ho:H= $21,000 Ha: H O C. t D. t< (c) Find the standardized test statistic t. t= (Round to two decimal places as needed.)
A recent study focused on the number of times men and women who live alone buy take-out dinner in a month. Assume that the distributions follow the normal probability distribution and the population standard deviations are equal. The information is summarized below. Statistic Men Women Sample mean 24.04 22.15 Sample standard deviation 5.57 4.54 Sample size 32 34 At the 0.01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? State the decision rule for 0.01 significance level: H0: μMen= μWomen H1: μMen ≠ μWomen. (Negative values should be indicated by a minus sign. Round your answers to 3 decimal places.) Compute the value of the test statistic. (Round your answer to 3 decimal places.) What is your decision regarding the null hypothesis? What is the p-value? (Round your answer to 3 decimal places.)
Given a normal probability distribution with a mean of 9% and a standard deviation of 4%, what is the probability of observing a value between 2% and 14%? Use the following Z-score data is from the HP calculator: Z-Score -2.00 -1.75 -1.50 -1.25 -1.00 0.00 1.00 1.25 1.50 1.75 2.00 Probability 0.0228 0.0401 0.0668 0.1056 0.1587 0.5000 0.8413 0.8944 0.9332 0.9599 0.9772 Answer in decimal format, to 3 decimal places, truncated. For example, if your answer is 33.46%, enter 0.334.
Quality control A manufacturer of generator shafts finds that it needs to add additional weight to its shafts in order to achieve proper static and dynamic balance. Based on experimental tests, the average weight it needs to add is µ = 35 gm with ơ = 9 gm. Assuming a normal distribution, from 1000 randomly selected shafts, how many would be expected to need an added weight in excess of 40 gm?
34% 34% 2.35% 2.35% 0.15% 13.5% 13.5% 0.15% μ-3σ μ-2σ μ-σ μεσ μ+2σ μ+3σ 11) The distribution of weights of 9-ounce bags of a particular brand of potato chips is approximately normal with a mean of 9.12 ounces and a standard deviation of 0.15 ounces. A) What is the probability that a randomly selected bag of chips weighs 8.97 ounces? B) What is the probability that a randomly selected bag of chips weighs between 8.97 ounces and 9.27 ounces? C) What is the probability that a randomly selected bag of chips weighs between 8.82 ounces and 9.57 ounces?
ull JO 100 4G 4:59 PM O 50% Quiz #3 Stat 7. A random sample of size 225 is drawn from a population with mean 100 and standard deviation of 20. Find the mean and the variance of the sample mean: (1 Point) * O Hi = 0, o = 1 100, o = 1.78 O Hi = 1.78, o = 100 100, o = 1.33 %| 8. If X is Normal distributed, with mean=µ, and standard deviation=Do. Then for a random sample of size 25, the value of: *
Can you please help me with parts C, E, and F?
Using the unemployment data provided, investigate the association between the male unemployment rate in 2007 and 2010 for a sample of 52 countries. Complete parts (a) through (4). m Click the icon to view the data table. OC The plot of the residuals against x tends to cluster as x increases, which is a possible violation of the Linearity Conditon. The Normal probability plot indicates that the Normal Population Assumption is satisfied. OD. The plot of the residuals againat x shows no patten, which satisfes the conditions for linear regression. The Normal probability plot indicates that the Nomal Probability Assumption is violated. c) Test an appropriate hypothesis using a- 0,05 to determine it the association is signiftcant. Choose the corect nul and altemative hypotheses. OA Ha: 0 OB. Ho: lo " 0 HA P0 or l 0 O C. Ho Po-0 OD. Ho: la =P HA Po

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