What is the SD of the Men group? how about the SD of the women group? Noting that women seem more interested in emotions than men, astudent in Experimental Psychology in UP Clark wondered if womenrecall emotional events better than men. She decides to gather somedata on the matter. An experiment is conducted in which 5 randomlyselected men, and 12 randomly selected women are shown 20 highlyemotional photographs and then asked to recall them 1 week after theshowing. The following recall data are obtained. Scores are percentcorrect. Distribution of participants between groups were not balancedsince women are greater in number than men in the school. Recall DataMenWomen758585926778778083889490898886N = 5N = 10

Answered: Image /qna-images/answer/69dfdd59-77c5-4a73-b03a-c04e724755c6.jpg

Answered: Noting that women seem more interested…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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What should the parents conclude? Choose the best answer.
You want to study whether music affects people’s ability to learn. You get a sample of college students. First, you have them study a list of words with soft classical music playing, then you test how many words they correctly remember. Second, you have them study a list of words with loud heavy metal playing, then you test how many words they correctly remember. You want to compare their learning/memory with the classical music to their learning/memory with the loud heavy metal music. What kind of hypothesis test should you do? Independent-Samples t-test Related-Samples t-test One-Sample t-test One-Sample z-test
Read the following information carefully then answer all the questions that follow. A marketing company does a fast-food survey and asks 500 people what they order on the side with their takeaway meals. They found that 141 people choose ice-cream, while 127 people choose burger. Finally, 149 people choose cola. They also found that 48 people choose ice-cream and cola, 27 people choose cola and burger, 32 people choose burger and ice-cream, and 10 people choose 3 of them; Burger, ice- cream and cola. a) Draw a Venn diagram and enter all the given information. b) Using the Venn Diagram and determine the number of people who order only Burger. c) What is the probability that a person orders ice-cream but not cola? d) What is the probability that a person will order no ice-cream?
Is Getting a suntan and getting a lot of junk mail Independent or Dependent?
A college president wanted to know how 10-year-after-graduation salaries for aca- demic majors (English, psychology, math, etc.) compared to salaries for career-oriented majors (business, engineering, computer science, etc.). She matched 84 academic majors at her college with 84 career-oriented majors on the basis of SAT scores and GPA. She found MAcademic = $59,250, MCareer =$61,000, sD = 9,500. Use an alpha of .05 and a two-tailed test to determine if there is a difference in salaries.
A reporter for a local television station visits the city's new upscale shopping mall the day before Christmas to interview shoppers. He questions the first 25 shoppers he meets outside one of department stores at the mall. He asks them whether their overall feelings about Christmas shopping are positive, neutral, or negative. Select the reason(s) why it may be risky to act as if the first 25 shoppers at this particular location are an SRS of all shoppers in the city. Surveying shoppers the day before Christmas is a convenience sample, so it is a simple random sample. Shoppers at the mall the day before Christmas does not guarantee every shopper in the population has an equal chance to be in the sample. Surveying shoppers at the mall the day after Christmas may not be a good represenation of all shoppers in the city. Having the reporter ask questions is not a double‑blind study.
A report just came out that stated that 21.2% of all Americans say that vanilla is their favorite ice cream, 21.9% say that chocolate is their favorite, 8.6% favor butter pecan, 9.2% favor strawberry, and the rest have other favorites. An ice cream shop owner thinks that her customers are not like the rest of America. The table below shows the results of 905 of her patrons' ice cream selections. What can be concluded at the αα = 0.01 significance level? Complete the table by filling in the expected frequencies. Round your answers to the nearest whole number. Outcome Frequency Expected Frequency Vanilla 188 Chocolate 186 Butter Pecan 97 Strawberry 68 Other 366 What is the correct statistical test to use? Paired Test, Goodness-of-fit, homogeneity, or independence. What are the null and alternative hypotheses?H0:H0: Favorite ice cream and where the ice cream is purchased are dependent. The distribution of favorite ice cream for customers at her…
A teacher was listening to some of her students talk about how many SnapChats they send during the day. The teacher decided that she wanted to conduct a study to see if the number of SnapChats a student sends per day affects how much time students talk to their friends face-to-face. So, the teacher let her 2nd period class continue sending Snaps as they always have. Then, the teacher told her 5th period that they were to not watch use SnapChat for a whole day. Then, the teacher had students record how many conversations they had with their friends during the week, gathered the data, and analyzed the results. What type of study is this? Experimental or observational?
John Wayne Like a lot of other Americans, John Waynedied of cancer. But is there more to this story? In 1955Wayne was in Utah shooting the film The Conqueror. Across the state line, in Nevada, the United States mili-tary was testing atomic bombs. Radioactive fallout from those tests drifted across the filming location. A total of46 of the 220 people working on the film eventually diedof cancer. Cancer experts estimate that one would expectonly about 30 cancer deaths in a group this size. a) Is the death rate among the movie crew unusuallyhigh?b) Does this prove that exposure to radiation increasesthe risk of cancer?
A USA Today poll asked a random sample of 1012 U.S. adults what they do with the milk in the bowl after they have eaten the cereal. Suppose that 70% of U.S. adults actually drink the cereal milk. Remember to check conditions and interpret your results into a sentence.
Lilo wants to know if equal proportions of students in her class know how to surf well, know how to surf a little or do not know how to surf. She randomly samples 60 students in her class and asks them if they know how to surf. Twenty students indicate that they do not know how to surf 'don't know', while 30 students indicate they know how to surf well 'know well,' and 10 students indicate they know how to surf ‘a little’. State the hypothesis being tested by Lilo (H0 and HA)? Test Lilo's hypothesis at α of .05. Enter the test statistic, critical value, and decision as part of your answer. Test statistic = Critical value = Do you reject or retain the null hypothesis that the slope is not different from zero? (Enter "Reject" or "Retain"):

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