Find the critical value(s) and rejection region(s) for the indicated t-test, level of significance a, and sample size n.Left-tailed test, α=0.005, n = 18Click the icon to view the t-distribution table.The critical value(s) is/are(Round to the nearest thousandth as needed. Use a comma to separate answers as needed.)M

We have given that Level of significance α=0.005,n=18,,

Answered: Find the critical value(s) and…

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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DII Given below are the sample means for fifteen samples consisting of five data values each. Assume that the mean of the sample means is ten and the computed values for the UCL and LCL of the chart are 15 and 5, respectively. Below is the chart. Is this process in statistical control? Why or why not? Select the best answer choice. Sample 1 2 3 Mean 9 11 6 17+ 16- 15 14+ 13+ 12+ 11+ 10- 9. 8+ 7- 6 5 4. 3- 2- 1- R Submit Question $ F4 % -1 + O No, because there are eight consecutive points all above or all below the centerline. O No, because there is a point lying beyond the upper or lower control limit. O No, because there is a pattern, trend, or cycle that is obviously not random. O No, because more than one of the answer choices above are correct. O Yes, this process is within statistical control. 5 T 4 5 12 9 ▬▬ FS 6 7 8 11 7 8 6 6 Y H 49 9 10 12 16 F6 8 & 7 9 U 11 12 6 13 J 10 F7 11 13 14 15 12 11 7 8 12 PrtScn 13 FB K 15 9 UCL centerline LCL Home 16 Q F9 L ) End 0 F10 A PgUp ☎
Explain how to find the critical values for a t-distribution. Click the icon to view the t-distribution table. Give the first step. Choose the correct answer below. O A. Identify the level of significance and the degrees of freedom, d.f. =n-1. 2 O B. Identify the level of significance 1- a and the degrees of freedom, d.f. = n. c. Identify the level of significance a and the degrees of freedom, d.f. = n-1. 1-a O D. Identify the level of significance and the degrees of freedom, d.f. = n. 2 Find the critical value(s) using the given t-distribution table in the row with the.correct degrees of freedom. column with a V sign. If the hypothesis test is left-tailed, use the "One tail, a" "Two tails, "Two tails, a" "One tail, 5
Find the margin of error for the given values of c, s, and n. c= 0.98, s = 4, n = 28 Click the icon to view the t-distribution table. The margin of error is (Round to one decimal place as needed.)
Does Hypnotism Relieve Pain? The table shows the pain levels of patients before and after hypnotism. Pain level is measured on a cm scale. Assume that the two samples are randomly selected. At the 0.05 significance level, test the claim that the mean difference has increased after hypnotism.(Be sure to subtract in the same direction).
Available below are amounts of arsenic in samples of brown rice from three different regions. The amounts are in micrograms of arsenic and all samples have the same serving size. Use a 0.05 significance level to test the claim that the three samples are from populations with the same mean. Do the amounts of arsenic appear to be different in the different regions? Given that the amounts of arsenic in the samples from region C have the highest mean, can we conclude that brown rice from region C poses the greatest health problem? view the data table of the arsenic amounts. Arsenic Amounts (micrograms) A 4.9 4.9 4.9 5.2 5.3 5.5 5.6 5.7 5.8 5.9 6.1 6.3 B 2.3 3.6 4.5 4.6 4.8 4.8 4.8 5.1 5.1 5.4 5.4 5.5 C 5.7 5.7 6.7 6.9 7.1 7.2 7.2 7.3 7.3 7.4 7.5 7.6 What are the hypotheses to test? H0: mu 1 equals mu 2 equals mu 3μ1=μ2=μ3 H1: At least one…
Answer with explation
Scores in the first and final rounds for a sample of 20 golfers who competed in tournaments are contained in the Excel Online file below. Construct a spreadsheet to answer the following questions. Due to a recent change by Microsoft you will need to open the XLMiner Analysis ToolPak add-in manually from the home ribbon. Screenshot of ToolPak X Open spreadsheet Suppose you would like to determine if the mean score for the first round of an event is significantly different than the mean score for the final round. Does the pressure of playing in the final round cause scores to go up? Or does the increased player concentration cause scores to come down? a. Use a = .10 to test for a statistically significantly difference between the population means for first- and final-round scores. What is the p-value? p-value is What is your conclusion? There is no Final round (to 4 decimals) b. What is the point estimate of the difference between the two population means? (to 2 decimals) For which round…
Number of Number of patients lesions Cholestyramine group Placebo group 64GAONTO 3 5 7 8 >10 Total 5 4 6 5 7 8 4649 00 6 7 2 60 2 4 6 697524 8 57 You have a choice between Poisson and negative binomial distributions, as possible models for the number of lesions in the cholestyramine group. Using the x²-test check which distribution better fits the data (e.g., results in smaller chi-square statistic). For the negative binomial use r=4 and p = 0.44, and for the Poisson use λ = 4.6.
N To determine if their 1.50 inch steel handles are properly adjusted, Smith & Johnson Industries has decided to use an X-Chart which uses the range to estimate the variability in the sample. Answe Step 2 of 7: What is the Upper Control Limit? Round your answer to three decimal places. Table 1 2 Control Chart Select the Copy Table button to copy all values. To select an entire row or column, either click on the row or column header or use the Shift and arrow keys. To find the average of the selected cells, select the Average Values button. Copy Table Average Values The average of the selected cell(s) is 1.460. Copy Value 34 Period obs1 obs2 obs3 obs4 obs5 obs6 Sample Mean Sample Range 1.46 1.50 1.46 1.53 1.55 1.54 1.5067 1.54 1.45 1.49 1.53 1.46 1.52 1.4983 1.50 1.54 1.47 1.51 1.45 1.47 1.4900 1.49 1.52 1.53 1.47 1.50 1.53 1.5067 5 1.46 1.45 1.49 1.4850 6 1.51 1.51 1.52 1.5117 7 1.53 1.50 1.47 1.54 1.5050 8 1.50 1.5067 1.54 1.50 1.47 1.46 1.54 1.53 1.53 1.46 1.51 1.52 1.50 1.47 1.54…
A: 96, 122, 132, 111, 130, 99, 126, 113, 134, 126, 143, 132, 125, 115 B: 2.98, 3.85, 4.44, 4.84, 3.50, 4.87, 4.06, 4.45, 3.87, 4.70, 4.31 Step 1 of 2 : For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place.
Find the margin of error for the given values of c, s, and n. c= 0.95, s = 6, n = 21 Click the icon to view the t-distribution table. The margin of error is (Round to one decimal place as needed.)
Available below are amounts of arsenic in samples of brown rice from three different regions. The amounts are in micrograms of arsenic and all samples have the same serving size. Use a 0.05significance level to test the claim that the three samples are from populations with the same mean. Do the amounts of arsenic appear to be different in the different regions? Given that the amounts of arsenic in the samples from region Ahave the highest mean, can we conclude that brown rice from region A poses the greatest health problem? Arsenic Amounts (micrograms) A 5.8 5.8 6.5 6.5 6.9 7.2 7.3 7.3 7.6 7.6 7.9 7.9 B 4.5 4.9 5.2 5.2 5.5 5.8 5.8 5.9 6.3 6.3 6.4 6.4 C 1.8 3.7 4.1 4.1 4.6 4.6 4.8 5.1 5.2 5.6 5.7 5.7 The Test statistic is: The P-value is: The conclusion is:

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