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QUESTION 1 Researchers want to test whether the motor development scores differ for children with different...
QUESTION 2 What is the appropriate alternative hypothesis for the above test? O 1. The average motor developm...
QUESTION 2 What is the appropriate alternative hypothesis for the above test? O 1. The average motor development scores do not differ for the three levels of birth weight 2. The average motor development scores differ for at least two of the three levels of birth weight 3. all of the motor development scores are different from each other for the three levels of birth weight 04. The average motor development scores differ among the 300 children QUESTION 1 Researchers...
A. Nonparametric Test B. Parametric Test 1. Mann-Whitney U-test a...
A. Nonparametric Test B. Parametric Test 1. Mann-Whitney U-test a. Paired t-test 2. Friedman test b. One-way ANOVA 3. Kruskall-Wallis test c. Independent groups t-test 4. Wilcoxon signed-ranks test d. Repeated measures ANOVA 7. (1 pt)Using the information provided, indicate which statistical test you think should be used for each of the following situations (a-d): Independent variable: normal birth weight vs. low birth weight infants; dependent variable: breathing rate (in breaths per minute). Independent variable: time of measurement of same...
QUESTION 3 a) Researchers want to test the effect of three different diets on the weight...
QUESTION 3 a) Researchers want to test the effect of three different diets on the weight gain in 2 week- Diet 2 16 old lambs. The following table records the weight gain by the lambs. Diet 3 15 10 17 Diet 1 16 21 18 At the 0.05 level of significance, assess that there is a difference in the weight gain for each of the diet. (16 marks) b) Ten plots, each 10.4 meters, were randomly chosen in a large...
Use the following information to answer the question. Researchers want to test whether the color of...
Use the following information to answer the question. Researchers want to test whether the color of a vehicle ticketed for speeding has an effect on the amount of the ticket. Four vehicle colors were used for the study--red, white, black, and silver. Thirty vehicles were randomly assigned to each group. Use the output below to answer the question. One-way ANOVA Variation between groups=2063.33 Variation within groups=196.25 p=4.5985705E-4 Choose the correct conclusion for the hypothesis that vehicle color affects the amount...
An educator believes that new reading activities for elementary school children will improve reading comprehension scores....
An educator believes that new reading activities for elementary
school children will improve reading comprehension scores. She
randomly assigns third graders to an eight-week program in which
some will use these activities and others will experience
traditional teaching methods. At the end of the experiment, both
groups take a reading comprehension exam. Their Scores are shown
below.
New Activities: 23, 34, 34, 34, 35, 37, 42, 43, 44, 46, 47, 48,
49, 55
Control: 12, 13, 22, 26, 29, 30,...
1) Answer the question True or False. 1) Nonparametric methods focus on the location of the...
1) Answer the question True or False. 1) Nonparametric methods focus on the location of the probability distribution, rather than on specific parameters of the population. A) True B) False 2) Nonparametric tests are useful for qualitative data that can be ranked. A) True B) False 3) The sign test provides inferences about the population median rather than the population mean. A) True B) False 4) For a sign test to be valid, a large sample must be selected from...
30. A radioactive waste spill occurred in one area of a town. Researchers want to examine whether...
can
some answer number 30, 35, 36, and 37?
30. A radioactive waste spill occurred in one area of a town. Researchers want to examine whether the spills inked to increased cancer rates. For several months afterwards, they record the number of people diagnosed with cancer at one hospital near the radioactive spill, and different hospitals across town that are not near the spill. What are the two populations of interest? (2 pts) In this case, what is the null...
Question 5 (1 point) ✓ Saved Suppose you want to know whether travel experiences are related...
Question 5 (1 point) ✓ Saved Suppose you want to know whether travel experiences are related to knowledge of geography. You give a 15 item quiz on American Geography and you also ask how many states participants have visited then look to see if there is a relation between the 2 t-test O correlation Multiple Regression chi squared ANOVA (F test) Question 6 (1 point) ✓ Saved In an experiment designed to study the effects of exposure to an aggressive...
please answer all question 16-20 Question 16 2 pts The population mean for a standardized test...
please answer all question 16-20
Question 16 2 pts The population mean for a standardized test is 250. A research study with N = 30 adults from Virginia had a mean score of 260, with a 95% confidence interval of the mean reported as [248, 272]. What decision should be made based on this confidence interval? o Run the hypothesis test again o Accept the research hypothesis o Reject the null hypothesis o Fail to reject the null hypothesis Question...
1-6 aloud. Scoring is time it takes to re enhancing child analysis of varia time (pretest...
1-6
aloud. Scoring is time it takes to re enhancing child analysis of varia time (pretest vs tional condition significant main main effect of i Two-Way ANOVA To assess the Effectiveness of a Reading Pro gram What is imp tional conditior STATISTICAL GUIDE In a two-way ANOVA, there are two independent vari outcome variable. The independent variables are usua sifications and the outcome variable is usually a continuous one understand this, examine Figure 1, where the two inde are nominal...
QUESTION 2 What is the appropriate alternative hypothesis for the above test? O 1. The average motor development scores do not differ for the three levels of birth weight 2. The average motor development scores differ for at least two of the three levels of birth weight 3. all of the motor development scores are different from each other for the three levels of birth weight 04. The average motor development scores differ among the 300 children QUESTION 1 Researchers...
QUESTION 3 a) Researchers want to test the effect of three different diets on the weight gain in 2 week- Diet 2 16 old lambs. The following table records the weight gain by the lambs. Diet 3 15 10 17 Diet 1 16 21 18 At the 0.05 level of significance, assess that there is a difference in the weight gain for each of the diet. (16 marks) b) Ten plots, each 10.4 meters, were randomly chosen in a large...
Use the following information to answer the question. Researchers want to test whether the color of a vehicle ticketed for speeding has an effect on the amount of the ticket. Four vehicle colors were used for the study--red, white, black, and silver. Thirty vehicles were randomly assigned to each group. Use the output below to answer the question. One-way ANOVA Variation between groups=2063.33 Variation within groups=196.25 p=4.5985705E-4 Choose the correct conclusion for the hypothesis that vehicle color affects the amount...
An educator believes that new reading activities for elementary
school children will improve reading comprehension scores. She
randomly assigns third graders to an eight-week program in which
some will use these activities and others will experience
traditional teaching methods. At the end of the experiment, both
groups take a reading comprehension exam. Their Scores are shown
below.
New Activities: 23, 34, 34, 34, 35, 37, 42, 43, 44, 46, 47, 48,
49, 55
Control: 12, 13, 22, 26, 29, 30,...
1) Answer the question True or False. 1) Nonparametric methods focus on the location of the probability distribution, rather than on specific parameters of the population. A) True B) False 2) Nonparametric tests are useful for qualitative data that can be ranked. A) True B) False 3) The sign test provides inferences about the population median rather than the population mean. A) True B) False 4) For a sign test to be valid, a large sample must be selected from...
can
some answer number 30, 35, 36, and 37?
30. A radioactive waste spill occurred in one area of a town. Researchers want to examine whether the spills inked to increased cancer rates. For several months afterwards, they record the number of people diagnosed with cancer at one hospital near the radioactive spill, and different hospitals across town that are not near the spill. What are the two populations of interest? (2 pts) In this case, what is the null...
Question 5 (1 point) ✓ Saved Suppose you want to know whether travel experiences are related to knowledge of geography. You give a 15 item quiz on American Geography and you also ask how many states participants have visited then look to see if there is a relation between the 2 t-test O correlation Multiple Regression chi squared ANOVA (F test) Question 6 (1 point) ✓ Saved In an experiment designed to study the effects of exposure to an aggressive...
please answer all question 16-20
Question 16 2 pts The population mean for a standardized test is 250. A research study with N = 30 adults from Virginia had a mean score of 260, with a 95% confidence interval of the mean reported as [248, 272]. What decision should be made based on this confidence interval? o Run the hypothesis test again o Accept the research hypothesis o Reject the null hypothesis o Fail to reject the null hypothesis Question...
1-6
aloud. Scoring is time it takes to re enhancing child analysis of varia time (pretest vs tional condition significant main main effect of i Two-Way ANOVA To assess the Effectiveness of a Reading Pro gram What is imp tional conditior STATISTICAL GUIDE In a two-way ANOVA, there are two independent vari outcome variable. The independent variables are usua sifications and the outcome variable is usually a continuous one understand this, examine Figure 1, where the two inde are nominal...
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