Suppose the mean IQ score of people in a certain country is 101. Suppose the director of a college obtains a simple random sample of 42 students from that country and finds the mean IQ is 104.4 with a standard deviation of 13.7. Complete parts (a) through (d) below. Explain what the director is testing. Choose the correct answer below. V A. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually greater than 102. O B. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not equal to 102. O C. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually equal to 102. O D. The director is testing if the sample provided sufficient evidence that the population mean IQ score is actually not greater than 102. Find the test statistic for this hypothesis test. 1.14 (Round to two decimal places as needed.) Find the P-value for this hypothesis test. (Round to three decimal places as needed.)

Q3  Test the given claim. Identify the null​ hypothesis, alternative​ hypothesis, test​ statistic, P-value, and then state the conclusion about the null​ hypothesis, as well as the final conclusion that addresses the original claim. Among 2125 passengers cars in a particular region, 229 had only rear license plates. Among 326 commercial trucks, 47 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passengers cars. Use a 0.01 significance level to test that hypothesis.  A. Identity the nulls and alternative hypotheses  B. Identify the test statistic ( round to two decimal places as needed)  C. Identify the p- values (round to two decimal places as needed ?  State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. A. Fail to reject Ho. There is not sufficient evidence to support the claim that commercial trucks owners…

There is some research to indicate that different dog breeds differ in emotionality. To consider these differences, a researcher administers a standard test of emotionality to 3 breeds of dogs (German Shepherd, Cocker Spaniel, and Chihuahua), with 4 dogs from each breed being tested. Higher scores mean higher emotionality. The results for the emotionality test scores appear below. Using the 7 steps of hypothesis testing, test the idea that there are differences in emotionality based on dog breed using α = .05   Emotionality Scores for Dogs German Shepherd Cocker Spaniel Chihuahua   6 0 10   1 4 12   7 0 9   2 0 8   T = 16  T = 4  T = 39  Gt = 59        N = 12       ∑x2 = 495 4. Decision Rule (Be sure to include your critical value) 5. Do your calculations 6. Make your decision 7. State your results in a sentence. Report your results in APA style including a measure of effect size. Be sure to include descriptive statistics (M).  8. Given your decision in #7, would…

If the p-value is very large (say close to 1), then it is likely that we will reject the null hypothesis. True False

Imagine you are doing a Related-Samples t-test, and you are on Step Four of the hypothesis test.  The study you are doing is testing whether there’s a significant difference between the anxiety of people before and after a final exam.  The APA sentence is t(28) = 3.45, p < .05, d = 1.05.  What is the correct set of conclusions that goes with this APA sentence?   Group of answer choices   Reject the H0, conclude that there IS a difference in anxiety, conclude based on effect size that the difference is small. Fail to Reject the H0, conclude that there IS a difference in anxiety. Reject the H0, conclude that there IS NOT a difference in anxiety, conclude based on effect size that the difference is small. Fail to Reject the H0, conclude that there IS NOT a difference in anxiety. Reject the H0, conclude that there IS a difference in anxiety, conclude based on effect size that the difference is large.

You come across Professor Cafferty's data set from his Master's thesis and realize that he has data on types of family support that 26 homosexual men had during young adulthood (about 18-25 years old). You come across two questions where the respondent was asked if they would identify their family as religious and whether or not they received financial support from their family. Please complete the appropriate 8-step hypothesis test using the data below.   Had Financial Support Did Not Have Financial Support Family Religious 3 12 Family Not Religious 6 5

Can I get help on what step I missed?

In this case, p-value is greater. So null hypothesis should not be rejected, correct?