Question

For the following set of scores, determine if a statistically significant relationship exists between X and...

For the following set of scores, determine if a statistically significant relationship exists between X and Y. [X: 3, 1, 3, 5] [Y: 5, 8, 6, 4] (Hint: Match the X scores to each Y score).

a.)State the alternative hypothesis.

b.) Find the Critical Value. Assume two-tailed with alpha=.05.

c.)Calculate Pearson's r.

d.)Write a conclusion. Fail to reject Ho or Accept Ha.

e.) Calculate r^2.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Use the following information regarding a variable (Y) and a variable (X) to answer the next...
Use the following information regarding a variable (Y) and a variable (X) to answer the next 7 questions. n = 8            ∑ x = 56 ∑ y = 296 ∑ x 2 = 428 ∑ y 2 = 11,920 ∑ xy = 2,257 The sample covariance equals 26.43 -9.17 9.17 12.12 3 points    QUESTION 23 Refer to above data. The sample correlation coefficient equals: a. -0.94 b. 1.67 c. .991 d. .85 3 points    QUESTION 24 Given the...
3) For a two-tailed hypothesis using a z-distribution, determine your decision (reject Ho and accept H1...
3) For a two-tailed hypothesis using a z-distribution, determine your decision (reject Ho and accept H1 OR fail to reject Ho) and the type of error you may have committed for the following situation. Be sure to draw out your distribution, indicate your critical region plus the critical values and where each of the following z-scores fall in that distribution. a) z = -1.97 with an alpha = 0.05 b) z= +2.00 with an alpha = 0.01 c) z =...
You want to determine whether or not there is a significant relationship between IQ and eye-hand...
You want to determine whether or not there is a significant relationship between IQ and eye-hand coordination. You obtain scores for the 62 students in a university class on both an IQ test and an eye-hand coordination test. (a) State the null hypothesis. (b) Given the number of students in your study, what is the tabled value of r for significance at the .05 error (95% confidence) level? Use a two-tailed test. (c) Assume that you calculate a Pearson r...
A researcher was interested in the relationship between an average daily time spent on social media...
A researcher was interested in the relationship between an average daily time spent on social media (i.e., X variable) and social anxiety (i.e., Y variable). The data collected on a sample of n = 82  undergraduate students produced the following results:        SSx= 49, SSY= 36, SP = 11, MX = 8, MY = 15. A. Is there a significant correlation between an average daily time spent on social media and social anxiety? Use 2-tailed test, p < .05 to answer this research...
1. Calculate the critical degrees of freedom and identify the critical t value for a single-sample...
1. Calculate the critical degrees of freedom and identify the critical t value for a single-sample t test in each of the following situations, using p=.05 for all scenarios. Then, state whether the null hypothesis would fail to be rejected or rejected: a. Two-tailed test, N = 14, t = 2.05, (df= Answer:, critical t = Answer:, Reject or Fail to Reject Ho: Answer: b. One-tailed test, N = 14, t = 2.05, (df= Answer:, critical t = Answer:, Reject...
A random sample of 84 eighth grade​ students' scores on a national mathematics assessment test has...
A random sample of 84 eighth grade​ students' scores on a national mathematics assessment test has a mean score of 294. This test result prompts a state school administrator to declare that the mean score for the​ state's eighth-graders on this exam is more than 285. Assume that the population standard deviation is 31. At α = 0.10​, is there enough evidence to support the​ administration's claim? Write out the hypotheses statements below and identify the parameter of interest. Ho...
The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate...
The authors of a paper presented a correlation analysis to investigate the relationship between maximal lactate level x and muscular endurance y. The accompanying data was read from a plot in the paper. x   400 760 770 810 850 1035 1210 1260 1290 1410 1475 1480 1505 2200 y   3.80 4.10 4.80 5.30 3.90 3.40 6.40 6.88 7.55 4.95 7.70 4.45 6.70 8.90 Sxx = 2,614,773.214, Syy = 38.2727, Sxy = 7544.396. A scatter plot shows a linear pattern. (a)...
A researcher was interested in the relationship between the reported stress level (variable X) and performance...
A researcher was interested in the relationship between the reported stress level (variable X) and performance on memory test (variable Y). The data collected on a sample of n = 62  undergraduate students produced the following results: MX = 4, SSx = 30, MY = 6, SSY= 90, and SP = - 15 A. Is there a significant correlation between stress level and memory performance? Assume 2-tailed test, p < .05. For full credit your answer should include: Null and alternative...
12.6 Can a pretest on mathematics skills predict success in a statistics course?  Assume students in an...
12.6 Can a pretest on mathematics skills predict success in a statistics course?  Assume students in an introductory stats class can be considered a random sample from a larger population of statistics students.  These 62 students took a pretest at the beginning of the semester, and their score from the pre-test and their score from the final exam in the course were recorded.  The least squares regression line was found to be y = 13.8 + 0.81x, and the standard error of b1...
Consider the following set of ordered pairs. x 5 1 2 4 4    y 6...
Consider the following set of ordered pairs. x 5 1 2 4 4    y 6 1 0 6 5 Calculate the coefficient of determination and test its significance using α=0.05. A. Calculate the coefficient of determination. R^2equals= B. Determine the null and alternative hypotheses. Determine the critical​ F-score, Fα. Fα= ​(Round to three decimal places as​ needed.) Calculate the​ F-score for this test. F= ​(Round to three decimal places as​ needed.) Reject or Do not reject?