PROBLEM:A research study was conducted toe petween older and younger adults on perceived study was conducted to examine this hypothesis he age of 70) and ten younger adults (between 2 ife satisfaction test (known to have bigh reliabli
Q: Suppose 247 subjects are treated with a drug that is used to treat pain and 55 of them developed…
A: Solution: Let X be the number of subjects developed nausea and n be the number of subjects are…
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A: 1. The regression equation for predicting exclusion judgments from participants’ evaluations of the…
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A: Let Oi be the observed frequencies Ei be the expected frequencies N = Total number of flights = 235
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A: From the provided information, Level of significance (α) = 0.03 Sample size (n1) = 5 and n2 = 5
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A: From the provided information, Sample size (n) = 54 Out of which 35 involved an intoxicated driver.…
Q: Suppose 247 subjects are treated with a drug that is used to treat pain and 50 of them developed…
A: Given,n=247x=50p^=xn=50247=0.2024α=0.01
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A: To test whether the score of group A is more than group B, defined the hypotheses. So the null…
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Q: According to the Bureau of Transportation Statistics, on-time performance by airlines is described…
A: Therefore, the appropriate null and alternative hypotheses are stated below: Null hypothesis: H0:…
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Q: According to the Bureau of Transportation Statistics, on-time performance by airlines is described…
A: It is given that the percentages of types of delays of flight. Hypotheses: (The first option) H0:…
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A:
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- A tourist company did a survey to determine if more New Yorkers or more Californians recognize a certain type of giraffe. Of the 583 New Yorkers surveyed, 198 knew the type of giraffe while 188 out 641 Californians knew the type of giraffe. At the 0.1 significance level, test the claim that the recognition rates of a certain type of giraffe are the same in both states. What are the correct hypotheses? (Select the correct symbols and values.)A random sample of 100 rich men faculty and 100 rich women faculty at a Premier University is asked if they have an automobile on campus. If 31 of the rich men and 24 of the rich women have cars, can we conclude that more men than women have cars on the campus? Use a 0.01 level of significance.Suppose 450 subjects are treated with a drug that is used to treat pain and 140 of them developed nausea. Use a 0.05 significance level to test the claim that more than 205% of users develop nausea. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Show word count ( Previous Next
- A study was done to determine whether the proportion of women who had accidents on Friday the 13th was greater than the proportion of men who had accidents on Friday the 13th. To find out, a random sample was taken of 2,000 individuals. Each individual was asked their gender and whether they had been involved in an accident on Friday the 13th. a)What is the explanatory variable, and is it quantitative or categorical? b)What is the response variable, and is it quantitative or categorical? c)What procedure should be used for this test?11. In professional tennis for 2017 men challenged 2100 calls and 1105 of them were changed. While women challenged 1309 calls and 625 of them were changed. Conduct a hypothesis test to test the claim that men get more calls changed than women. Use a significance level of 0.05.17. A student did not believe their teacher when they stated that students tend to make more mistakes on their homework when listening to music. The students gave 30 participants two tasks: one task was given while the participant performed simple math problems and gave a similar, but different set of math problems when not listening to music. The following is the mean of the difference scores for the two tasks MD=4 and an SEM=1.3 a. State the null and alternative hypothesesb. Perform a paired samples t test with the descriptive statisticsc. Is there a significant difference between the two conditions? Test using an alpha level of .05, using the direction of the test that is listed in the question. Use APA format in answering question.
- In an experiment, students were given words to memorize, then were randomly assigned to either take a 90 minute nap or take a caffeine pill. A couple hours later, they were tested on their recall ability. We wish to test to see if the sample provides evidence that there is a difference in mean number of words people can recall depending on whether they take a nap or have some caffeine. a). What are the null and alternative hypotheses for this test?b). If the results of the test comparing sleep and caffeine for memory are statistically significant, what does that mean in terms of sleep, caffeine, and memory?c). If the results are not statistically significant, what does that mean in terms of sleep, caffeine, and memory?ific Calculator Of30shg/ckivdfk1p00003g5tgeftOid1 Agroup of researchers in New York wants to test if there is any relationship between living in California and preferring warm weather to cold weather. The researchers send out an online questionnaire to 200 randomly chosen people in the US asking several questions including: "Do you live in California?" and "Do you prefer warm weather to cold weather?". The results are summarized in the table below: Prefers Warm Weather 80 Prefers Cold Weather 42 Lives in California Doesn't Live in California 35 43 Test the null hypothesis that the choices on these two questions are independent versus the alternative that they are dependent. What are the p-value and conclusion of this test if the test is performed at the alpha =0.1 level? %3D p-value = 0.0091; Fail to reject the null hypothesis %3D p-value = 0.0039; Reject the null hypothesis p-value = 0.0039; Fail to reject the null hypothesis p-value = 0.0911; Reject the null hypothesis NEXTMoral judgments about a harmful behavior are expected to be associated with one’s ability to recognize how hurt the victim of the harmful behavior is. To test this a replication of the Malti and colleagues (2012) was attempted. Researchers asked 12- and 15-year-olds whether they thought it was okay to exclude a Serbian peer from going to a soccer match (1 = really not okay, 7 = really okay) and how they thought the Serbian peer would feel if he/she was not invited to the soccer match (1= very bad, 7 = very good). The results for 12 of these adolescents are below: 1. Find the correlation, r, between exclusion judgments and evaluations of the victim’s feelings (assuming the researcher wanted to use the 1 to 7 scale as a numerical interval score). Q: r= ? 2. Describe this correlation and what does this correlation indicate about the relation between exclusion judgments and evaluations of the victim’s feelings?
- According to the Bureau of Transportation Statistics, on-time performance by airlines is described as follows: Action % of time On Time National Aviation System Delay Aircraft arriving late 71 9. 10 Other (weather and other conditions) 10 When a study was conducted it was found that of the 211 randomly selected flights, 150 were on time, 19 were a National Aviation System Delay, 21 arriving late , 21 were due to weather. Perform a test to see if there is sufficient evidence at a = 0.10 to see if these differ from the governments statistics. The correct hypotheses are: O Ho: The sample is a good fit to the Bureau of Transportation Statistics. HA: The sample is not a good fit to the Bureau of Transportation Statistics. (claim) O Ho: The sample is not a good fit to the Bureau of Transportation Statistics. HA: The sample is a good fit to the Bureau of Transportation Statistics. (claim) O Ho: The sample and the Bureau of Transportation Statistics are independent. HA: The sample and the…a) If 4 samples from 4 populations are given, then what is the probability of getting at least one Type 1 error at 95% confidence interval and no Type 1 error? b) Pepsi Co. Pvt Ltd is planning to produce a new energy drink. For this purpose, a pilot study was conducted using four different energy drinks formula. They were tested on 3 different sets of people and the reactions in energy level of the people were measured forming four groups. Using the data (measured energy level values) provided below, test whether there is difference in the four energy drinks. The data is as shown in Table. Formula 1 Formula 2 Formula 3 Formula 4 64 46 23 38 65 42 32 25 70 52 45 37 Table14. In 2005, Health Canada claimed that 16.7% of Canadian adults are obese. A researcher wanted to check whether this percentage has changed in 2009. He randomly selected 200 Canadian adults and found 29 of them are obese. Use9% significance level. Null and alternative hypothesis are a) H0: p = 0.167, H1: p not equal to 0.167 b) H0: mu not equal to 16.7, H1: mu = 16.7 c) H0: p not equal to 0.167, H1: p = 0.167 d) H0: mu = 16.7, H1: mu not equal to 16.7