Homework Answers
From the given information,
By using calculator,
The required correct answers are,
Que. 1
Negative
i.e., Option a. is correct.
Que. 2
3
i.e., Option c. is correct.
Please help me out by just rating the answer.
Thank you so much.
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Which of the following best describes the Pearson correlation for these data? XY 25 51 3...
41. Which of the following Pearson correlation coefficients indicates the greatest association between two groups of...
41. Which of the following Pearson correlation coefficients indicates the greatest association between two groups of vegetables? a. 0.0 b. 0.1 c. 0.2 d. 0.5 e. 0.8 42. Given the following data: 1 4 2 2 3 3 y: 1 4 Find: (Exy)(Ex2)(Ex) a. 9000 b. 70 c. 6000 d. 600 e. 27,000 43. How do a binomial distribution and a multinomial experiment differ? a. by the number of trials b. by the number of categories used c. by the...
A sample of n = 1000 people is classified into five categories. If the results are...
A sample of n = 1000 people is classified into five categories. If the results are evaluated with a Chi2 test for Goodness of Fit, what is the df value for this test? A. 3 B. 4 C. 995 D. 999 E. None of the above.
Compute the Pearson Correlation Coefficient, r, for the following data X Y 1 7 3 4...
Compute the Pearson Correlation Coefficient, r, for the following data X Y 1 7 3 4 5 3 4 2 2 4 Note: If it is a decimal number with two or more than two places, leave only two decimal places after the decimal point and do not round. If it is a negative correlation, please do not forget to include the negative sign. 1a) The Pearson Correlation, r is: 1b) The correlation is Group of answer choices a) Medium...
Worksheet: Chi Square and Correlation Suppose we have three categories A, B, and C. Assume that...
Worksheet: Chi Square and Correlation Suppose we have three categories A, B, and C. Assume that the historical distribution of observations among these four categories is 20%, 40%, and 40% respectively. A sample of size 250 is taken, and we find 75 observations in category A, 125 in category B, and 50 in category C 1. a. State the null hypothesis for the Chi-square goodness-of-fit test. b. What are the expected frequencies for each category? c. Calculate the χ 2...
Category Observed Counts A gene called ACTN3 encodes a protein that functions in fast- twitch muscles....
Category Observed Counts A gene called ACTN3 encodes a protein that functions in fast- twitch muscles. People have different variants of this gene, classified as RR, RX, or XX. RR 130 Using the sample data provided in the table, you want to test if the proportions in these categories are 0.4 (for RR), 0.4 (for RX), and 0.2 (for XX). RX XX 126 80 1. State the null and alternative hypotheses for this chi-square goodness-of-fit test. Ho: Ha: 2. What...
--FACTOR ANOVA: SEE 408 RSON CORRELATION: SEE P. 465 GRESSION: SEE P. 467 -SQUARE GOODNESS OF...
--FACTOR ANOVA: SEE 408 RSON CORRELATION: SEE P. 465 GRESSION: SEE P. 467 -SQUARE GOODNESS OF FIT: SEE P.501 1-SQUARE TEST FOR INDEPENDENCE: SEE P.502 4 pts Question 33 This regression problem (chp 14) can be solved with SPSS (steps p.500) and/or by hand. In the height and income study for men, height was classified into 5 categories from 1-tallest to 5-shortest and had a mean of Mx-3 with a SSx=20. Income, measured in thousands, had a mean score of...
The following shows the number of individuals in a random sample of 300 adults who indicated...
The following shows the number of individuals in a random sample of 300 adults who indicated they support the new tax proposal. Political Party Support Democrats 100 Republicans 120 Independents 80 We are interested in determining whether the opinions of the individuals of the three groups are uniformly distributed. If the opinions of the individuals of the three groups are uniformly distributed, the expected frequency for each group is _____ 0.333 0.50 50 None Refer to question 1. The calculated...
Select the BEST answer for each of the questions below (I true, F- false). Cirele the letter that corresponds with the answer you have selected. Each question is worth 2 points. [Total 40...
Select the BEST answer for each of the questions below (I true, F- false). Cirele the letter that corresponds with the answer you have selected. Each question is worth 2 points. [Total 40 points) Answer uestion E1. Power is the ability to reject the null hypothesis when it should be rejected 2. With curvilinear data, the Pearson r statistic is an appropriate, accurate statistical tool In a research report, the term statistically significant is used to indicate that the null...
For the following data (a) display the data in a scatter plot, (b) calculate the correlation...
For the following data (a) display the data in a scatter plot, (b) calculate the correlation coefficient r, and (c) make a conclusion about the type of correlation. The ages (in years) of 6 children and the number of words in their vocabulary Age, x 1. 2 3 4 5 6 Vocabulary size, y 500 450 1350 1750 2300 2300 (a) Choose the correct scatter plot below. A. B. c. D. 2350+.. 7 2350- 2350- Vocabulary Age Vocabulary Vocabulary ....
all 6? Sume select the sppropriate test for the following study: Compare ablet computer afher vigwins a new ad campaign. The pat meloded a young female spokesperson, an older female older male spo...
all 6?
Sume select the sppropriate test for the following study: Compare ablet computer afher vigwins a new ad campaign. The pat meloded a young female spokesperson, an older female older male spokesperson -12. ANOVA s ANOVA s ANOVA ーfr a new .tonbile. With a-.05 and a sample of.noevalu statistic of z-481. What is the appropriate statistical decisicn the a. R_thesulhypothesis with α-.05 butnot witha- on for this h.spetthe null hypothesis with either α = .05 ora-0101, c. Faltoreject the...
41. Which of the following Pearson correlation coefficients indicates the greatest association between two groups of vegetables? a. 0.0 b. 0.1 c. 0.2 d. 0.5 e. 0.8 42. Given the following data: 1 4 2 2 3 3 y: 1 4 Find: (Exy)(Ex2)(Ex) a. 9000 b. 70 c. 6000 d. 600 e. 27,000 43. How do a binomial distribution and a multinomial experiment differ? a. by the number of trials b. by the number of categories used c. by the...
Worksheet: Chi Square and Correlation Suppose we have three categories A, B, and C. Assume that the historical distribution of observations among these four categories is 20%, 40%, and 40% respectively. A sample of size 250 is taken, and we find 75 observations in category A, 125 in category B, and 50 in category C 1. a. State the null hypothesis for the Chi-square goodness-of-fit test. b. What are the expected frequencies for each category? c. Calculate the χ 2...
Category Observed Counts A gene called ACTN3 encodes a protein that functions in fast- twitch muscles. People have different variants of this gene, classified as RR, RX, or XX. RR 130 Using the sample data provided in the table, you want to test if the proportions in these categories are 0.4 (for RR), 0.4 (for RX), and 0.2 (for XX). RX XX 126 80 1. State the null and alternative hypotheses for this chi-square goodness-of-fit test. Ho: Ha: 2. What...
--FACTOR ANOVA: SEE 408 RSON CORRELATION: SEE P. 465 GRESSION: SEE P. 467 -SQUARE GOODNESS OF FIT: SEE P.501 1-SQUARE TEST FOR INDEPENDENCE: SEE P.502 4 pts Question 33 This regression problem (chp 14) can be solved with SPSS (steps p.500) and/or by hand. In the height and income study for men, height was classified into 5 categories from 1-tallest to 5-shortest and had a mean of Mx-3 with a SSx=20. Income, measured in thousands, had a mean score of...
Select the BEST answer for each of the questions below (I true, F- false). Cirele the letter that corresponds with the answer you have selected. Each question is worth 2 points. [Total 40 points) Answer uestion E1. Power is the ability to reject the null hypothesis when it should be rejected 2. With curvilinear data, the Pearson r statistic is an appropriate, accurate statistical tool In a research report, the term statistically significant is used to indicate that the null...
For the following data (a) display the data in a scatter plot, (b) calculate the correlation coefficient r, and (c) make a conclusion about the type of correlation. The ages (in years) of 6 children and the number of words in their vocabulary Age, x 1. 2 3 4 5 6 Vocabulary size, y 500 450 1350 1750 2300 2300 (a) Choose the correct scatter plot below. A. B. c. D. 2350+.. 7 2350- 2350- Vocabulary Age Vocabulary Vocabulary ....
all 6?
Sume select the sppropriate test for the following study: Compare ablet computer afher vigwins a new ad campaign. The pat meloded a young female spokesperson, an older female older male spokesperson -12. ANOVA s ANOVA s ANOVA ーfr a new .tonbile. With a-.05 and a sample of.noevalu statistic of z-481. What is the appropriate statistical decisicn the a. R_thesulhypothesis with α-.05 butnot witha- on for this h.spetthe null hypothesis with either α = .05 ora-0101, c. Faltoreject the...
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