d. The p-value for this sample(Please show your answer to four decimal places.)e. The p-value is Select an answerf. Based on this, we shouldO accept the nullO fail to reject the nullO reject the nullg. Thus, the final conclusion is...O There is insufficient evidence to conclude that blood type and branch of the military aredependent.O There is sufficient evidence to conclude that the distribution of blood types is not the same foreach branch of the militaryO There is insufficient evidence to conclude that the distribution of blood types is not the samefor each branch of the military.O There is sufficient evidence to conclude that blood type and branch of the military aredependent.O There is sufficient evidence to conclude that blood type and branch of the military areindependent. A researcher is interested in investigating whether the military branch a person signs up for and theperson's blood type are dependent. The table below shows the results of a survey.Frequencies of Military Branch andBlood TypeAABАrmyNavy140604130111816726Air Force124514621Marines118886727What can be concluded at the a = 0.01 significance level?a. What is the correct statistical test to use?O Paired t-testO Goodness-of-FitO HomogeneityO Independenceb. What are the null and alternative hypotheses?H,:O Blood type and branch of the military are dependent.O The distribution of blood types is the same for each branch of the military.O Blood type and branch of the military are independent.O The distribution of blood types is not the same for each branch of the military.H :O The distribution of blood types is not the same for each branch of the military.O The distribution of blood types is the same for each branch of the military.O Blood type and branch of the military are dependent.O Blood type and branch of the military are independent.C. The test-statistic for this data =(Please show your answer to three decimal places.)%3D

Given observed frequency table: O A B AB Total Army 140 60 41 30 271 Navy 111 81 67 26 285…

Answered: d. The p-value for this sample =…

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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Three admission test preparation programs are being evaluated. Suppose the scores obtained by a sample of 20 people who used the programs provided the following data. Program A B C 510 450 600 400 510 620 490 400 580 520 430 490 490 480 590 630 360 640 550 560 Use the Kruskal-Wallis test to determine whether there is a significant difference among the three test preparation programs. Use ? = 0.05. State the null and alternative hypotheses. -H0: MedianA ≠ MedianB ≠ MedianCHa: MedianA = MedianB = MedianC -H0: MedianA = MedianB = MedianCHa: MedianA ≠ MedianB ≠ MedianC -H0: All populations of test scores are identical.Ha: Not all populations of test scores are identical. -H0: MedianA = MedianB = MedianCHa: MedianA > MedianB < MedianC -H0: Not all populations of test scores are identical.Ha: All populations of test scores are identical. Find the value of the test statistic. (Round your answer to two decimal places.) Answer=?? Find the p-value.…
Q According to a recent article about individuals who have credit cards, the mean number of cards per person with credit cards is 4. To test this result a random survey of 60 individuals who have credit cards was conducted. The survey only includes the number of credit cards per participant. The results of the survey are attached below. (a) What is the variable of interest in this study? Is it qualitative or quantitative? (b) Do the results of the survey imply that the mean number of cards per individual is less than 4? Use the a= 0.05 level of significance. Click the icon to view the data from the survey. C (a) What is the variable of interest in this study? Is it qualitative or quantitative? The variable of interest is It is a ▼variable. D Clear all Check answer Help me solve this View an example Get more help. 5:42 PM 6/18/2022 E Type here to search 3 7 S X E D C "42 $ R F % 5 T G 40 6 B Y H N C N 8 J M 9 K P 97°F Mostly sunny delete prt sc end 7 1
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You wish to test the following claim (Ha) at a significance level of a = 0.10. Ho: p=0.26 Ha:p> 0.26 You obtain a sample of size n = 209 in which there are 72 successful observations. For this test, y should use the (cumulative) binomial distribution to obtain an exact p-value. (Do not use the norm distribution as an approximation for the binomial distribution.) The p-value for this test is (assuming Ho is true) the probability of observing... O at most 72 successful observations O at least 72 successful observations 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 greater than a This test statistic leads to a decision to... O reject the null O accept the null
e. Consider the following hypothesis test. H: 4, - H, = 0 H.:H,- H, #0 The following results are for two independent samples taken from the two populations. Sample 1 n, = 70 x; =106 o, = 8.4 a. What is the value of the test statistic? Sample 2 n, = 80 x, =108 0z = 7.6 b. What is the p-value? c. With a=0.01 , using the p-value approach, what is your hypothesis testing conclusion? Why? Explain.
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9. The time (in seconds) required to catch a falling meter stick was recorded for 6 randomly selected students, both using their dominant hand and non-dominant hand. The data are shown below: Student Dominant Non-dominant 1 2 3 4 5 6 0.177 0.210 0.186 0.189 0.194 0.198 0.179 0.202 0.208 0.184 0.215 0.193 Using a=0.10, test whether the dominant hand time is faster than the non-dominant hand time. You may assume that all conditions are satisfied.
In the research design for a (an) _____, each participant experiences all experimental conditions so as to compare differences across conditions a. one-sample t test b. dependent-samples t test c. independent-samples t test d. z test
here are the remaining subpart unaswered questions that was asked in the previous homework questions. Assume that a population of thousands of people whose responses were used to develop the anxiety test had scores that were normally distributed with u=30 and o=10. What proportion of people in this population would have anxiety scores within each of the following range of scores? Below 10 = Below 50 = Above 50 = Either below 10 or above 50 = What is SEm2? It is the sample estimate of the standard error of the mean. What does the value of SEm tell you about the typical magnitude of sampling error? It tells where a researcher has one sample of data of size N and the researcher can compute a sample mean, M, and a sample standard deviation, s, but the researcher does not know the values of the population parameter. As s increases, how does the size of SEm change (assuming that N stays the same)? As N increases, how does the size of SEm change (assuming that s stays the same)
You wish to test the following claim (H.) at a significance level of a = 0.005. You believe both populations are normally distributed, but you do not know the standard deviations for either. And you have no reason to believe the variances of the two populations are equal You obtain a sample - 19.1 from the first population. 7.1 from of size ni 23 with a mean of a1 You obtain a sample of size n2 the second population. 86.6 and a standard deviation of s1 20 with a mean of r2 96.5 and a standard deviation of s2 = a. What is the test statistic for this sample? test statistic = Round to 3 decimal places. b. What is the p-value for this sample? For this calculation, use p-value Use Technology Round to 4 decimal places.
O a. the OLS estimate of r is biased due to sample selection. O b.the OLS estimate of r is unbiased. Oc the error u is homoskedastic. O d. the OLS estimator is BLUE.
The data summarized in the accompanying table is from a paper. Suppose that the data resulted from classifying each person in a random sample of 48 male students and each person in a random sample of 88 female students at a particular college according to their response to a question about whether they usually eat three meals a day or rarely eat three meals a day. Male Female Usually Eat 3 Meals a Day 25 35 Rarely Eat 3 Meals a Day 23 53 Is there evidence that the proportions falling into each of the two response categories are not the same for males and females? Use the x² statistic to test the relevant hypotheses with a significance level of 0.05. Calculate the test statistic. (Round your answer to two decimal places.) x² = Use technology to calculate the P-value. (Round your answer to four decimal places.) P-value = What can you conclude? O Reject Ho. There is convincing evidence that the proportions falling into the two response categories are not the same for males and females. O…

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d. The p-value for this sample = (Please show your e. The p-value is Select an answer V a f. Based on this, we should O accept the null O fail to reject the null O reject the null g. Thus, the final conclusion is... O There is insufficient evidence to conclude that blood dependent.