he relationship between amount of time spent studying for an exam (X) in hours and the score that person makes on an exam (Y) X Y 2 65 3 70 3 75 4 70 5 85 6 85 7 90 using spss Give the following: 1. Null hypoth
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Problem 2:
Examine the relationship between amount of time spent studying for an exam (X) in hours and
the score that person makes on an exam (Y)
X Y
2 65
3 70
3 75
4 70
5 85
6 85
7 90
using spss Give the following:
1. Null hypothesis
2. Alternative hypothesis
3. Statistical test
4. Computation
5. Decision
6. Conclusion
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- 3. The data displays the number of days a vaccinated person infected with a certain virus is symptomatic, divided according to age group. Researchers wanted to know if age has anything to do with the length of time a person is symptomatic. They are testing at 0.05 significance level. 21-30 years old 31-40 years old 41-50 years old 7 4 5 6 3 7 3 6 5 6 7 3 7 For this problem, fill the missing values. (Use 5 decimal places) Source df S MS (4) (2) (3) Group 4.8 Error 12 26.8 Total 14 (1) a. (1) SST b. (2) MSG с. (3) MSE d. (4) FA concerned consumer believes that they are being cheated in the weight of potato chips per bag. The company claims that every small bag weighs 1 ounce. You weigh 50 different bags of chips and find the average to be .97 ounces. Match the following terms to their meaning in context of this problem. The consumer finds a test result that is NOT statistically significant What is their conclusion?20. Solve the following problem: A panel of educators in a large urban community wanted to evaluate the effects of educational resources on student performance. They examined the relationship between 12th-grade mean math SAT scores (Y) and the following independent vari- ables for a random sample of 25 high schools: X, = per pupil expenditure (in dollars); X = percentage of teachers with a master's degree or higher; and Xg = pupi-teacher ratio. The sums of squares shown next can be used to summarize the key tesults from the regression of Y on X, Xp, and Xy SSY = 28,222.23 SSE = 2,248.23 a. Determine the ANOVA table for the regression of Yon X, Xz, and Xg- b. Determine the R-value for the model in part (a). Based on this value, comment on whether the three educational resource variables appear to be associated with student performance.
- 62. Below are the results of a Chi-Square test using the variables "believing astrology is scientific" (the independent variable) and having "ever read a horoscope or persona astrology report" (the dependent variable). Answer the following questions based on the information in these results. Ever read a horoscope or Personal astrology report " Astrology is scientific Crosstabulation % within Astrology is scientific Astrology is scientifc Not at all scientific Sort of Very scientific scientific Total Ever read a horoscope or Yes Personal astrology report 63.6% 58.7% 33.4% 44.0% No 36.4% 41.3% 66.6% 56.0% Total 100.0% 100.0% 100.0% 100.0% Chi-Square Tests Asymptotic Significance (2-sided) Value df Pearson Chi-Square 76.636* 2 .000 Likelihood Ratio 77.050 .000 Linear-by-Linear Association 69.776 .000 N of Valid Cases 1139 A. What is the null hypothesis concerning these variables? B. Based on the p-value (significance) from these results, can you reject the null hypothesis? C. What do these…7.
- 2) Researchers are interested in whether there is any relationship between a person's IQ (x- variable) and how long they live (y-variable). Answer the questions below by using the data provided. Show your work and use the back of the page if necessary. X Y 10 3 6. 6. 7 4 3 4 a) What type of statistical analysis would be most appropriate to use in this scenario? Please justify your answer. b) Please state the null and alternative hypotheses. c) Please report the results of your statistical analyses and make a decision about whether to reject or fail to reject the null hypothesis Use alpha = .05 (two-tailed). %3DSolve second one[2] Instruction: Draw a conclusion by analyzing the given sets of data using the z test. Use the 7 steps below in answering a word problem in inferential statistics. (Type the answers with solution, NOT HANDWRITTEN + Please put a label with "step #" on every solution). Note (1): pls refer for the format in the photo below and few example on how to answer each steps. Note (2): pls refer for the problem on the next photo
