believe that the movie “hellboys” was so bad that I actually became less intelligent after watching it. To test this theory, I took a group of 5 people and measured their intelligence. Then I forced them to watch. After the movie, I measured their intelligence again to see whether it decreased. Not that I truly believe that there is no possible way for the movie to increase someones intelligence Pre treatment scores for the people in the group: 100 110 95 120 105 Post treatment scores for the people in the group: 70 97 80 98 95 Conduct the appropriate test using the data provided. Maintain a Type 1 error rate of 2.5% no ssps please.

I am having trouble solving this problem.  Can you please provide me with some help?  Thank you.  I appreciate it. Kentrex, a maker of game consoles, wants to determine whether a proposed new advertising campaign will change gamers' perception of the brand.  To conduct the test, Kentrex selected a selected a panel of 6 game players and used an extensive questionnaire to measure brand perception before and after the panel is shown the new campaign through a series of ads.  Using the before-and-after brand perception scores in the table below and assuming that the appropriate population conditions are satisfied, construct a hypothesis test of the null hypothesis that there is no difference in average before-and-after scores for the populations.  Use a significance level of 5%. player 1 2 3 4 5 6 before 47 52 67 31 62 59 after 57 54 72 37 60 68

You are an education researcher interested in studying if race or ethnicity affects the severity of punishment children receive.  Through open records, you are able to collect from several high schools the length of suspensions given to kids for fighting along with the race/ethnicity of the child.  The state of Texas divides school children into one of 7 race/ethnicity groups: African American, American Indian, Asian, Hispanic, Pacific Islander, White, or Multiracial.  You want to compare the average length of suspension among these 7 groups.  Which statistical test would be best to determine if there is a significant difference in the severity of punishment among the different groups?     one-sample t-test     related samples t-test     independent samples t-test     ANOVA

The principal of Paul Revere High School bragged that his 2016 graduating class of 1500 students achieved impressive scores on their ACT exams. He announced that an “astounding” 36% of the class got a score of 29 or higher, 54% got a score of 21 to 28, and only 10% less than 21. You want to test whether these ACT results are really that astounding. You visit the ACT website to see that the national results are 34% getting a score over 28, 58% getting 21 to 28, and 8% less than 21. Test whether or not the principal is correct to brag that his proportions were more impressive than the national performance. Use an alpha of 0.05.   So I kinda understand the question. I am mostly confused about how to determine the degree of freedom to get the critical value. Like I know the formula is d-C, and C is the number of categories in the word problem, but is there 3? Or am I just totally wrong?

Sean is the star shortstop for his baseball team. He notices that his team typically scores about half as many runs as he has singles, and that his team is about 10% more likely to win a game for each run scored.  How likely is it that the team wins if he has 6 singles?  How many singles did Sean hit if the team was 70% likely to win?

A consumer group wanted to determine if there was a difference in customer perceptions about prices for a specific type of toy depending on where the toy was purchased.  In the local area there are three main retailers: W-Mart, Tag, and URToy.  For each retailer, the consumer group randomly selected 5 customers, and asked them to rate how expensive they thought the toy was on a 1-to-10 scale (1= not expensive, to 10 = very expensive). The toy was priced the same at all retail stores. Compute the percentage of variance explained by the group differences for these data. Q: Percentage and variance explained = ?

One of the categories of special education are children who are diagnosed with Speech/Language Impairment (SLI).  The most common SLI diagnosis is dyslexia.  A major difficulty for children with this diagnosis of dyslexia surrounds the skills of reading.  A special education teacher is interested in knowing whether a new reading technique increases reading skills for children diagnosed with dyslexia.  She uses the WRAT as a way of measuring reading skills and the average for this test is 55 with a standard deviation of 4.5.  She takes a random sample of 125 children diagnosed with dyslexia, employs her reading program with them and finds their mean on the WRAT to be 56.1.  Test the null hypothesis at the .05 level of significance.

Your statistics instructor claims that 60 percent of the students who take her Elementary Statistics class go through life feeling more enriched. For some reason that she can't quite figure out, most people don't believe her. You decide to check this out on your own. You randomly survey 55 of her past Elementary Statistics students and find that 29 feel more enriched as a result of her class. Now, what do you think?

You want to do a simulation where 10% are left handed, 89% are right handed, and 1% are ambidextrous.  What is the minimum number of digits needed to simulate a person? 1, 2 or 3?

Researchers have been studying the reliability of a new medical test. On their last study, they found that the test accurately identified those with the disease 92% of the time, and it accurately identified those without the disease only 74% of the time. There were 1,000 total people in this study, and 200 of them had the disease. Complete the table below using this information. Then, use your completed table to help you answer the questions. Disease Is Present Healthy (Disease Is Not Present) 184 Positive Test Result 16 Negative Test Result ९ Enter text [more.. 592 a) If an individual does not have the disease, what is the probability that the test suggests that the disease is present? Give your answer as a percent rounded to the nearest hundredth, if necessary. Be sure to include the % when inputting your answer. 0.26 X b) If the test result suggests that the disease is present, what is the probability that the patient does not have the disease? Give your answer as a percent rounded…