Suppose that your friend sees the results from question 4 and concludes that heavier drinking causes more tobacco use. Do you agree or disagree with this conclusion? Explain.
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- Suppose that your friend sees the results from question 4 and concludes that heavier drinking causes more tobacco use. Do you agree or disagree with this conclusion? Explain.
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- Population Genetics In the study of population genetics, an important measure of inbreeding is the proportion of homozygous genotypesthat is, instances in which the two alleles carried at a particular site on an individuals chromosomes are both the same. For population in which blood-related individual mate, them is a higher than expected frequency of homozygous individuals. Examples of such populations include endangered or rare species, selectively bred breeds, and isolated populations. in general. the frequency of homozygous children from mating of blood-related parents is greater than that for children from unrelated parents Measured over a large number of generations, the proportion of heterozygous genotypesthat is, nonhomozygous genotypeschanges by a constant factor 1 from generation to generation. The factor 1 is a number between 0 and 1. If 1=0.75, for example then the proportion of heterozygous individuals in the population decreases by 25 in each generation In this case, after 10 generations, the proportion of heterozygous individuals in the population decreases by 94.37, since 0.7510=0.0563, or 5.63. In other words, 94.37 of the population is homozygous. For specific types of matings, the proportion of heterozygous genotypes can be related to that of previous generations and is found from an equation. For mating between siblings 1 can be determined as the largest value of for which 2=12+14. This equation comes from carefully accounting for the genotypes for the present generation the 2 term in terms of those previous two generations represented by for the parents generation and by the constant term of the grandparents generation. a Find both solutions to the quadratic equation above and identify which is 1 use a horizontal span of 1 to 1 in this exercise and the following exercise. b After 5 generations, what proportion of the population will be homozygous? c After 20 generations, what proportion of the population will be homozygous?The linear correlation coefficient r is ( round to three decimals) The test statistic is ( Round to three decimals ) The P-value is ( Round to three decimals )Sarah is conducting a correlation analysis. She creates a correlation matrix with 5 variables, using data from a sample of 37 people. She has decided to conduct her analysis as a one-tailed test with an alpha of .01. What is the critical value for Sarah's correlation?
- identify linear correlation coefficient rSarah is conducting a correlation analysis. She creates a correlation matrix with 5 variables, using data from a sample of 37 people. She has decided to conduct her analysis as a one-tailed test with an alpha of .01. What is the critical value for Sarah's correlation? Enter your value with four decimal places. Do not include a zero to the left of the decimal (i.e., .0001, not 0.0001, not .01, not .001).Sarah is conducting a correlation analysis. She creates a correlation matrix with 5 variables, using data from a sample of 37 people. She changed her mind and decided to conduct her analysis as a two-tailed test with an alpha of .05. What is the critical value for Sarah's correlation? Enter your value with four decimal places. Do not include a zero to the left of the decimal (i.e., .0001, not 0.0001, not .01, not .001).
- A zero correlation bewteen X and Y is least likely to occur if?A fair coin is tossed three times (consecutively). If X is the number of heads of the first shot and Y is the random variables representing the total number of heads, what is the correlation coefficient of X and Y? calculateBecause a partial correlation considers the influence of a third variable, it is possible to have a partial correlation be greater than 1 or smaller than -1? A. True B. False
- A_________exists between two variables when the values of one variable are somehow associated with the values of the other variable. trial difference correlation inferenceA mutual funds company’s newsletter says, “A well-diversified portfolio includes assets with low correlations.” The newsletter includes a table of correlations between the returns on various classes of investments. For example, the correlation between municipal bonds and large-cap stocks is 0.50, and the correlation between municipal bonds and small-cap stocks is 0.21. A) Rachel invests heavily in municipal bonds. She wants to diversify by adding an investment whose returns do not closely follow the returns on her bonds. Should she choose large-cap stocks or small-cap stocks for this purpose? Explain your answer. B) If Rachel wants an investment that tends to increase when the return on her bonds drops, what kind of correlation should she look for?A) Perform a formal test for correlation on the chocolate consumption / Nobel prize winners data in chocolate nobels H0: There is no correlation between chocolate consumption and the number of Nobel prize winners (=0) H1: There is a correlation between chocolate consumption and the number of Nobel prize winners ( is not 0) What is the critical value of Spearman's correlation coefficient, which is required to reject the null hypothesis at a 0.05 confidence level? B) Perform a formal test for correlation on the chocolate consumption / Nobel prize winners data in chocolate nobels H0: There is no correlation between chocolate consumption and the number of Nobel prize winners (=0) H1: There is a correlation between chocolate consumption and the number of Nobel prize winners ( is not 0) True or false: The null hypothesis should be rejected based on your analysis in the preceding questions.