In the first virtual quiz in the Stat 111 class last academic year with only 14 students, the following scores(Xvalues) were obtained, out of 10: 3, 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 9.Using the population coefficient of kurtosis based on the fourth moment, what type of kurtosis is present inthis distribution? Answer LEPTOKURTIC, MESOKURTIC, or PLATYKURTIC. Write the computed value, roundedto one decimal place, beside your first answer, separated by a comma.Note: The following sums can be computed from the data: £*, X; = 84, E, X} = 536,E, X? = 3,600, E X$ = 25,256. The population variance can be computed as14=1N²

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Answered: In the first virtual quiz in the Stat…

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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Researchers at a medical school want to compare the rates of birth defects in babies born to mothers with low-fat diets with those born to mothers with high-fat diets. For one year, they collected data on all babies and their mothers in area hospitals, using information obtained from the mothers to determine whether they fall in the low fat or high fat diet category.A) Observational B) Experimental
What is the rejection region with 0.01 ?
Conduct a Chi-square test between two appropriate variables of your choice to investigate an association. Obtain column %s, count and expected count in the crosstabs table. Describe what the table tells you about the association in 2-3 sentences, reporting some %s and comparing select observed/expected frequencies in various cells to describe the association. Write out the null and research hypothesis Report the χ² critical value for an alpha level of 0.05. Report χ² obtained/test stat and sig/p value from the output. What is your decision about the hypothesized association? Write out a conclusion about the association. Attach your output including the cross-tabulation table and the chi-square test.
In a trivariate distribution, it 112= 0.7, 113 = 0.61 and 223 = 0.4 find all the multiple correlation coefficients. Also obtain the standard of estimates 01.23 61:23, 02:13 and 53:12 given that: 52= 1:06, 62 = 2.15 and 3= 3.46.
how to find that which type of kurtosis is represent by the curve in sample distribution.
In a trivariate distribution the simple coefficient of correlation are as follows if r12 = 0.76, rı3= 0.75 and r²3= 0.71 calculate the coefficient of partial correlation r 12.3
An experiment is designed to determine the effect of four different types of tips in a hardness tester on the observed hardness of a metal alloy. Four specimens of the alloy were obtained, and each tip was tested once on each specimen, producing the following data: Specimen Туре of Tip 4 9,3 9,4 9,2 9,7 9,4 9,6 9,8 9,5 10 9,3 9,4 9,6 9,9 9,7 10,2 3 4 10 What is your conclusion about this test at 0.05 level of significance? a. There is no difference between four specimens of the alloy. O b. At least one specimens of the alloy is different.
A selected, inbred rat strain had a tail measuring an average of 5.4 cm. An inbred, wild caught strain had 6.2 cm long tails. The selected and wild caught strains were crossed producing the F1 and F2 below. Generation Progeny Phenotype F1 20 5.8 cm F2 250 5 to 6.6 cm a) Assume that 4 genes control tail length. What is the average contribution per allele in the F2 generation? b) What proportion of the F2 would have tails 6 cm in length? c) Which of the following best describes the PARENTAL rat strains? AAbbCCDD x aaBBccdd AABBCCDD x aabbccdd AABBccdd x aabbCCDD d) How many offspring (approximately) in the F2 would have 5 cm long tails?
stion 16: nts) A random sample of 200 psychology students was selected from a department's participant pool. A researchers determined each student's score on the NPI-16 and the number of his or her Facebook friends. The marginal distribution of NPI-16 scores was 4, with a standard deviation of 2. The marginal distribution "Facebook Friends" was 450, with a standard deviation of 200. The correlation between the two variables was .15. Assuming that NPI-16 is the predictor variable and Number of Facebook Friends is the outcome variable, compute the following: The lower limit of the 95% confidence interval around b. Note: Enter your answer to the second decimal place.
Before the furniture store began its ad campaign, it averaged 200 customers per day. The manager is investigating if the average is larger since the ad came out. The data for the 16 randomly selected days since the ad campaign began is shown below: 209, 193, 187, 205, 209, 218, 211, 223, 229, 199, 207, 209, 207, 210, 202, 233 Assuming that the distribution is normal, what can be concluded at the αα = 0.10 level of significance? The null and alternative hypotheses would be: H0: H1: The test statistic = ______________ (please show your answer to 3 decimal places.) The p-value = ________ (Please show your answer to 4 decimal places.) Thus, the final conclusion is that ... The data suggest the populaton mean is significantly more than 200 at αα = 0.10, so there is sufficient evidence to conclude that the population mean number of customers since the ad campaign began is more than 200. The data suggest that the population mean number of customers since the ad…
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Please sir or ma’am, please help me with hypothesis, critical region, and t statistic.

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