MX- 86, S= 18, and n 25, and assuming that the population is normally distributed, construct a 99% confidence interval estimate of the population mean, .Click here to view.page 1.of the table of critical values for the tdistribution.Click here to view.Dage 2of the table of critical values for the t distribuition.(Round to two decimal places as needed.)

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Answered: MX-86, 5- 18, and n 25, and assuming…

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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A standardized exam's scores are normally distributed. In a recent year, the mean test score was 20.6 and the standard deviation was 5.6. The test scores of four students selected at random are 13, 23, 7, and 35. Find the z-scores that correspond to each value and determine whether any of the values are unusual. Question content area bottom Part 1 The z-score for 13 is (Round to two decimal places as needed.) Part 2 The z-score for 23 is (Round to two decimal places as needed.) Part 3 The z-score for 7 is (Round to two decimal places as needed.) Part 4 The z-score for 35 is (Round to two decimal places as needed.) Part 5 Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. A. The unusual value(s) is/are (Use a comma to separate answers as needed.) B. None of the values are unusual.
Answer sub parts d through g
X-9, 10, 18, 12, 15, 13, 11, 10, 16 To two decimals places without a leading zero, compute 1. Skew (to 2 decimals) 2. Se Skew (to 2 decimals) 3. Test value 4. Is the distribution normal (yes or no)?
Plz help asap t7.
PLEASE SHOW WORK.
TRUE or FALSE. Write TRUE if the statement is unconditionally true. Otherwise, write FALSE. 1. If a 90% confidence interval estimate for the population mean score of all Stat 101 students taking this assessment is (38, 42), then around 90% of these students will have scores ranging from 38 to 42. 2. A 99% confidence interval constructed for the mean difference in the systolic blood pressure before and after taking medication (Hbefore Hafter) is (7 mmHg, 13 mmHg) supports the claim that the medication helped in reducing the systolic blood pressure.
n1=16 x‾1=124 s1=35 n2=12 x‾2=86 s2=31 Use this data to find the 98% confidence interval for the true difference between the population means. Assume that the population variances are not equal and that the two populations are normally distributed. Copy Data Step 2 of 3 : Find the margin of error to be used in constructing the confidence interval. Round your answer to six decimal places. Step 3 of 3 : Please also find the high and low endpoints and round to four decimal points.
otected View - Saved to this PC Search View Help 12. The city council is considering a law that would ban smoking in all public facilities. A sample has been selected from the community and tested for of the ordinance. Is there a statistically significant relationship between age and support for the anti-smoking law? Use the five step model as a guide and write a sentence or two interpreting your results. support Age More than 40 Less than 40 Support: For 145 78 223 Against 103 248 169 247 272 495 A. Use probabilities to determine if these two variable are independent or dependent P (Less than 40) 3D P(Less than 40 | For)= P(Less than 40| Against) = Are age and support for the anti-smoking law independent? (Yes independent/No = not independent) B. Conduct a hypothesis test using an alpha of .05 that these variables are i
Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"
A STATISTICS PROFESSOR IS REVIEWING GRADES TREAT THE SCHEDULE AS UNGROUPED DATA GRADE 86 76 96 86 92 82 74 76 85 81 88 GRADE 90 86 76 74 85 92 85 76 83 84 95 SOLVE FOR UNGROUPED DATA- MEASURES OF CENTRAL TENDENCY, QUARTILES. SAMPLE STANDARD DEVIATION RANGE INTERQUARTILE RANGE SOLVE BOTH WAYS
Also included in question find estimated variance of errors, estimated variance of slope, and 90% and 95% confidence intervals for slope. Thank you so much
Data set 18 includes "attractive" ratings of male dates by the female dates. The summary statistics are n=199, x-6.19, s-1.99. Use a 0.01 significance level to test the claim that the population mean of such ratings is less than 7 Find H, and H₁ for this claim. O Ho: mean>7, H1: mean-7 Ho: mean7 Ho: mean-7, H1: mean<7 2

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