10. A student from region A scored 400 onstandardized math test with a mean of 350and a standard deviation of 35. A studentfrom region B scored 67 on a standardizedmath test with a mean of 62 and a standarddeviation of 5. Both are being considered fora scholarship at the same university.a) How can the university decide whichcandidate is the better student?

For region A:The test score is .The mean is .The standard deviation is .For region BThe test score…

Answered: 10. A student from region A scored 400…

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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14.
9) A small value of the mean of a data set indicates that the values of that data set are spread over a relatively smaller range around the standard deviation. Select one: False True
1) choose four numbers with the largest possible standard deviation. You may use the same numbers more than once. 2) is your selection of numbers the only possible correct answer
4. What is the mean number of available computers at noon on Monday? 5. What is the standard deviation of the number of available computers at noon on Monday?
8. An English test has a mean of 104 points and a standard deviation of 24. A sample of 75 students are taught using a new method to see if their scores improved. The sample mean was 107 points. a) State the null and alternative hypotheses. b) Determine whether the results are statistically significant at a = .01. c) State your statistical decision. d) Write your answer in proper APA notation.
17. Exams I, II, and III have mean results of 67, 72, and 76, respectively, and standard deviations of 11, 8, and 5, respectively. Mary takes exam I, John takes exam II, and Sarah takes exam III. They each score 83. Rank them from lowest to highest results according to z-scores. (A) John, Sarah, Mary (C) Mary, John, Sarah (B) John, Mary, Sarah (D) Mary, Sarah, John If you feel the answer is none of the choices given, submit no answer to the question.
6. Suppose that 100 females at a gym are randomly selected and asked their weights, in pounds. The mean is 137, the median is 125, and the standard deviation is approximately 23. What can you conclude? Read carefully and select one of the following: a) On average, each female's weight in the sample is approximately 23 pounds different from the mean. b) On average, each female's weight in the sample is approximately 23 pounds different from the median. c) On average, each female's weight in the sample is approximately 23% different from the mean. d) On average, each female’s weight in the sample is approximately 23% different from the median.
28. A travel analyst claims that the mean price of a round trip flight from New York City to Los Angeles is less than $507. In a random sample of 55 round trip flights from New York City to Los Angeles, the mean price is $502. Assume the population standard deviation is $111. At a = 0.05, is there enough evidence to support the travel analyst's claim?
7. Students that are accepted to Harvard University typically have an SAT score of 2100 or higher. In 2012, the average (i.e., mean) SAT score was 1490 with a standard deviation of 240. a) Convert the SAT score typically required to get into Harvard into a z-score. b) If an applicant's z-score for their SAT was 3.5, what would their raw SAT score be? c) IQ scores are standardized scores with an average of 100 and a standard deviation of 15. What IQ score is typically required to get into Harvard (hint: convert Harvard's SAT requirement into an IQ score) a) = b) =
One year consumers spent an average of $22 on a meal at a resturant. Assume that the amount spent on a resturant meal is normally distributed and that the standard deviation is $3.Complete parts (a) through (c) below. a. What is the probability that a randomly selected person spent more than $24?
his question refers to excavations at a national monument. One question the archaeologists asked was: Is raw material used by prehistoric Indians for stone tool manufacture independent of the archaeological excavation site? Two different excavation sites gave the information in the following table. Use a chi-square test with 5% level of significance to test the claim that raw material used for construction of stone tools and excavation site are independent. Excavation Site Material Site A Site B Row Total Basalt 756 559 1315 Obsidian 92 103 195 Pedernal chert 514 521 1035 Other 88 91 179 Column Total 1450 1274 2724 (a) What is the level of significance? (b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.)
28. A recent study by The Fresno Bee showed that 4% of Fresnans have a commute time (the time it takes to get to work) of more than 22 minutes. If the standard deviation of commute times is 3.5 minutes, what is the mean of all commute times?

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