Find the left and right chi square values, then give the confidence interval.Sample Variance s= 7.81Confidence Level c = 0.95 and Sample Size n = 27LeftRight1+c1- cLevel of Significance a2Degrees of Freedomn – 1Confidence Interval for Variance o(n – 1)s²(n – 1)s²XRand x%3DAt the 95 % level of confidence the population variance is betweenand(Round all answers to 3 decimal places)||

Find the left and right chi square values, then give the confidence interval. Sample Variance s = 7.81 Confidence Level c = 0.95 and Sample Size n = 27 %3D Left Right 1+c 1 Level of Significance a 2 Degrees of Freedom Confidence Interval for Variance o (n – 1)s² 2 (n – 1)s² XR XL x = and XR %3D At the 95 % level of confidence the population variance is between and (Round all answers to 3 decimal places)

Find the left and right chi square values, then give the confidence interval. Sample Variance s = 7.81 Confidence Level c = 0.95 and Sample Size n = 27 %3D Left Right 1+c 1 Level of Significance a 2 Degrees of Freedom Confidence Interval for Variance o (n – 1)s² 2 (n – 1)s² XR XL x = and XR %3D At the 95 % level of confidence the population variance is between and (Round all answers to 3 decimal places)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Independent random samples were selected from two quantitative populations, with sample sizes, means, and variances given below. Population Sample Size Sample Mean Sample Variance 1 49 10.3 9.64 2 58 8.5 15.42 A 90% confidence interval for ₁-₂ is 0.68 to 2.92 and a 99% confidence interval for ₁-₂ is 0.05 to 3.55. Use these confidence intervals to answer the questions. Can you conclude with 99% confidence that there is a difference in the means for the two populations? Ⓒ Yes. The value #₁ - ₂2=0 is not in the interval which suggests that there is likely a difference between ₁ and 1₂. ₂ = 0 is not in the interval which does not suggest that there is a difference between and H1 #₂. O No. The value μ₁ - O No. The value μ₁ - ₂ = 0 is in the interval which does not suggest that there is a difference between and M₂ 1₂" and H₂ H₂² Yes. The value and H₂ H₂" = 0 is in the interval which suggests that there is likely a difference between M₁ - H₂ Can you conclude with 99% confidence that there is…
Lifetimes of Wristwatches A random sample of the lifetimes of 28 inexpensive wristwatches has a standard deviation of 4.6 months. Assume the variable is normally distributed. Use the chi-square distribution table to find any chi-square values to three decimal places. Round your final answers to one decimal place. Find the 98% confidence intervals for the variance and standard deviation
Treatment Sham H2 Researchers conducted a study to determine whether magnets are effective in treating back pain. The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. The results are a measure of reduction in back pain. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. 30 30 0.51 0.37 0.56 1.42 a. Use a 0.05 significance level to test the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment. What are the null and alternative hypotheses? A. Ho: H1 = H2 H4: H1 # H2 B. Ho: H1 = H2 H1: H1> H2 C. Ho: Hy # H2 H1: H1
Find the left and right chi square values, then give the confidence interval. Sample Variance s = 14.6 Confidence Level c = 0.90 and Sample Size n = 22 Left Right 1+c1- c Level of Significance a Degrees of Freedom n-1 Confidence Interval for Variance o (n – 1)s² (n – 1)s? XR and XR %3D %3D At the 90 % level of confidence the population variance is between and (Round all answers to 3 decimal places)
Hypothesis Test for a Population Mean (o is Unknown) You wish to test the following claim (Ha) at a significance level of a = 0.01. H.:µ = 73.1 Ha:µ > 73.1 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 223 with mean M = 74 and a standard deviation of SD = 5.2. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the population mean is greater than 73.1. O There is not sufficient evidence to warrant rejection of the claim that the population mean is greater than 73.1. O The sample…
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.
Find the left and right chi square values, then give the confidence interval. Sample Variance s 15.99 %3D Confidence Level c = 0.90 and Sample Size n = 13 and x %3D %3D At the 90 % level of confidence the population variance is between and (Round all answers to 3 decimal places)
Age of College Students Find the 90% confidence intervals for the variance and standard deviation of the ages of seniors at Oak Park College if a random sample of 20 students has a standard deviation of 2.2 years. Assume the variable is normally distributed. Use the chi-square distribution table to find any chi- square values to three decimal places. Round the final answers to one decimal place.
Use the Math_achievement.sav file. As part of a large national education study, a researcher is investigating the relationship between math achievement and socioeconomic status. Data have been collected on 999 students enrolled in secondary education. Perform at test for independent groups for Math by gender. What is H,? The mean of group 0 is the same as the mean of group 1 The mean of group 0 is not the same as the mean of group 1 The mean math achievement score for boys is not different than the mean math achievement score for girls The mean math achievement score for boys is different than the mean math achievement score for girls The mean math achievement score for boys is the same as the mean math achievement score for girls The mean math achievement score for boys is not the same as the mean math achievement score for girls The mean math achievement score for boys is equal to the mean math achievement score for girls The mean math achievement score for boys is not equal to the…
onsider the following results for two independent random samples taken from two populations. Sample 1 Sample 2 n 1 = 50 n 2 = 30 x 1 = 13.1 x 2 = 11.2 σ 1 = 2.3 σ 2 = 3 What is the point estimate of the difference between the two population means? (to 1 decimal) Provide a 90% confidence interval for the difference between the two population means (to 2 decimals). Use z-table.( , ) Provide a 95% confidence interval for the difference between the two population means (to 2 decimals). Use z-table. If your answer is negative, enter minus (-) sign.( , )