R can be used to find the critical value for an F distribution for a given significance level. For example, tofind the critical value (the value above which you would reject the null hypothesis) for a = 0.05 withdfbetween = 6 and dfwithin = 56, then F1-0.05 is found with:qf (1-0.05, df1=6, df2=56)Enter this code into RStudio to confirm you obtain the value 2.266.You conduct a one-way ANOVA with 4 groups and 8 subjects in each group (a balanced design). Use RStudioto find the critical values for a = 0.10 and a = 0.01 (report accurate to 3 decimal places).F1-0.10 = 2.157 xF1-0.01 4.074Add WorkX

There are 4 groups with 8 subjects in each group. α=0.10α=0.01

Answered: R can be used to find the critical…

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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You want to see if it makes a difference which lane to be in when there is traffic. You randomly observe 332 cars as they pass by on the four lane freeway. The results are displayed in the table below. Use a level of significance of αα = 0.01. Complete the rest of the table by filling in the expected frequencies: Frequency of Cars in Each Lane Outcome Frequency Expected Frequency Lane 1 76 Lane 2 65 Lane 3 80 Lane 4 111 What are the null and alternative hypotheses?H0:H0: Select an answer The distribution of traffic is uniform. The distribution of traffic is not uniform. The traffic and lanes are dependent. The traffic and lanes are independent. Ha:Ha: The distribution of traffic is uniform. The traffic and lanes are independent. The distribution of traffic is not uniform. The traffic and lanes are dependent. The degrees of freedom = The test-statistic for this data = (Please show your answer to two decimal places.) Based on this, we should fail…
٦. ANOVA test is conducted to test whether 4 brands of steel have equal strength or not, The value of "F" is 12.56, and F critical value is 12.65; Accordingly our conclusion will be: Select one: The four brands have different strength on average. The four brands have different strength on average. All answers are wrong All answers are wrong At least one of the four brands has different strength on average. At least one of the four brands has different strength on average. The four brands have equal strength on average.
A personality test has a subsection designed to assess the "honesty" of the test-taker. Suppose that you're interested in the mean score, 4, on this subsection among the general population. You decide that you'll use the mean of a random sample of scores on this subsection to estimate u. What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 2 of µ? Use the value 22 for the population standard deviation of scores on this subsection. Carry your intermediate computations to at least three decimal places. Write your answer as a whole number (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.)
A consumer magazine wants to compare the lifetimes of ballpoint pens of three different types. The magazine takes a random sample of pens of each type in the following table. Brand 1 Brand 2 Brand 3 260 181 238 218 240 257 184 162 241 219 218 213 Test the claim that there is a difference in mean lifetime for the three brands of ballpoint pens, using α=0.01. Round you answer to 3 decimal places.
for a two tailed test, if z=2.04, find the p value
Suppose X1,., Xn, for n > 1, are sampled independently from a distribution with mean u and variance o?. Consider the following four estimators for X1+ Xn 2 X1 2 п(п + 1) i=1 a. Calculate the bias of each of these estimators. b. Calculate the standard error for each estimator. c. Which estimator would you choose to use? (Give a reason for your choice).
Two researchers conducteda study where the main goal wasto estimate the population meanfor a particular variable. Both researchers obtained a random sample from the population, and both obtained a sample standard deviation of s= 20. Researcher A selected a random sample of n= 100 individuals, whereas Researcher B selected a random sample of n= 64 individuals. Compute and report the standard error of the mean that Researcher A would obtain. Compute and report the standard error of the mean that Researcher B would obtain.
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R can be used to find the critical value for an F distribution for a given significance level. For example, to find the critical value (the value above which you would reject the null hypothesis) for a = 0.05 with dfbetween = 6 and dfwithin = 56, then F1-0.05 is found with: qf (1-0.05, df1=6, df2=56) Enter this code into RStudio to confirm you obtain the value 2.266. You conduct a one-way ANOVA with 4 groups and 8 subjects in each group (a balanced design). Use RStudio to find the critical values for a = 0.10 and a = 0.01 (report accurate to 3 decimal places). F1-0.10 = 4.191 X F1-0.01 = 96.694 X
Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given for Friday the 6th and Friday the 13th in the same month. Use the Wilcoxon signed-ranks test to test the claim that the matched pairs have differences that come from a population with median equal to zero at a significance level of α = 0.1. Fri. 6th 14 Fri. 13th 14 14 8 9 11 11 13 7 8 5 5 Click to view a table of critical values for the Wilcoxon signed-ranks test. 8 D First define the null and alternative hypotheses. Ho: The population of differences has a median equal to 0. H₁: Calculate the test statistic. T=0 Calculate the critical value. The critical value is. What is the conclusion for this hypothesis test? O A. Reject Ho. There is sufficient evidence to warrant rejection of the claim of no difference. O B. Fail to reject Ho. There is insufficient evidence to warrant rejection of the claim of no difference. O C. Reject Ho. There is insufficient evidence to…
A random sample of size n1 =15 is selected from a normal population with a mean of 76 and standard deviation of 9. A second random sample size n2 =10 is taken from another normal population with mean 71 and a standard deviation 13. Let x barı and x bar2 be the sample means. Find: a. The probability that xbar1 – xbar2 exceeds 4.5 b. The probability that 3.5 s xbar1– xbar2 s 5.5
Suppose we are interested in investigating the mean of a normally distributed population. As part of the investigation, we intend to draw a sample of 1400 observations from this population and carry out a test of the null hypothesis Ho : µ =450 against a two-sided alternative hypothesis. Suppose that in reality, the population mean is 450. On average, what will the p-value equal? (Give your numeric response to at least 3 decimal places. Give only your numeric response, and not any extra characters or symbols.) Your Answer: Your Answer

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