Researchers examined the influence of a television program on children's aggressiveness. The number of aggressive responses was measured during an observation period after viewing the television program. Imagine that the known national average for number of aggressive responses typically performed by children who do not watch television is 6.847. Number of aggressive responses are 9, 4, 11, 12, 14, 7, 12, 10, 11, 8, 14, 12, 8, 12, 7, 10, 10, 9, 5, 12  a. What is the null and alternative hypotheses in words and symbols? b. Is the assumption(s) met? Please explain your answer and proceed with the analysis even if the assumption(s) is not met. c. What do you conclude from your analysis?  d. Based on your response in “c” above, identify and explain the type of error you could be making. D wasn't solved

A psychologist has designed an index to measure the social perspectives of elementary school children. The index is based on ratings of a child’s responses to questions about a set of photographs showing different social situations.  The following are the indices measured on a random sample of 16 children attending elementary school in a particular district. 48, 75, 69, 58, 60, 68, 59, 66, 71, 52, 49, 60, 54, 55, 70, 57 For the data, the mean index is 60.69 and the standard deviation is 8.26. Perform a statistical test to determine if the population mean index is greater than 50. H0:  HA:  a). Test Statistic = b). P-value = c). Rejection region= d). Decision in the context of the problem=

A research article stated that there was a mean difference in depressive symptoms between male and female clients. The significance level for this study was set at .05. The p value obtained was .075. What does this mean? Explain.

Hypertension is when an adult is classified as having high blood pressure (above 130 systolic blood pressure is considered hypertension). Researchers want to know the proportion of adult North Americans (above age of 18) that have hypertension. Based on a study of 3532 adult North Americans, 1219 of them were classified as having hypertension.

In a survey conducted by Wright State University, senior high school students were asked if they had ever used marijuana. Of the 1120 females surveyed, 445 responded yes. Of the 1156 males surveyed, 515 responded yes. The researchers who conducted a survey were interested in knowing if there is a difference between genders in regards to having tried marijuana. 1. Is this an observational study or an experiment? Explain how you know, 2. Identify the explanatory and response variables, and classify them as categorical or quantitative. 3. Do you think random sampling was employed in this scenario? Explain your reasoning 4. Do you think random assignment was employed in this scenario? Explain your reasoning. 5. Write the hypotheses in symbols for this scenario. 6. Produce a 2x2 table of counts, with the explanatory variable in columns 7. Calculate the proportion of subjects who have tried marijuana based on gender.

Hypertension is when an adult is classified as having high blood pressure (above 130 systolic blood pressure is considered hypertension). Researchers want to know the proportion of adult North Americans (above age of 18) that have hypertension. Based on a study of 3532 adult North Americans, 1219 of them were classified as having hypertension.

A researcher wants to compare the effectiveness of three different teaching methods (A, B, and C) on exam scores. The researcher gathers exam scores from 20 students for each teaching method, and wants to determine if there is a significant difference in the mean exam scores between the three teaching methods. What test can the researcher use to answer this question?

Can you please answer all of the questions in the picture please. Explain and show your work ON PICTURES PLEASE! IT'S EASY TO UNDERTAND. Thank you!

Many people now turn to the internet to get information on health-related topics. A research article used Flesch reading ease scores (a measure of reading difficulty based on factors such as sentence length and number of syllables in the words used) to score pages on Wikipedia and on WebMD. Higher Flesch scores correspond to more difficult reading levels. The paper reported that for a representative sample of health-related pages on Wikipedia, the mean Flesch score was 26.9 and the standard deviation of the Flesch scores was 14.9. For a representative sample of pages from WebMD, the mean score was 43.5 and the standard deviation was 19.2. Suppose that these means and standard deviations were based on samples of 40 pages from each site. Is there convincing evidence that the mean reading level for health-related pages differs for Wikipedia and WebMD? Test the relevant hypotheses using a significance level of 0.05. (Use μ₁ for Wikipedia and μ₂ for WebMD.) USE SALT State the appropriate…

There were 5 members of a basketball team, who had a mean score of 12 points each per game. One of the team members left the team that reduces the mean score to 10 points each per game. What is the mean score of the member who left the team membership? Subject: Applied Statistics