Part II. Testing the Hypothesis: Childdevelopment expert says that, onaverage, the attention span of a 4-5year old child is 5 minutes. Akindergaten teacher wanted to testthis among her 40 students, whereshe found that their averageattention span was 6 minutes, with astandard deviation of 3.75 minutes.Test the claim that the alternativethat the average time is not equal to5 minutes, using a.05 level ofsignificance.Give the 6 steps of testing the hypothesis, showthe complete solution for the computation Step 1 (State the hypotheses)Your answerStep 2 (Level of Significance)Your answer

The given population mean is 5, and level of significance is 0.05.

Answered: Step 1 (State the hypotheses) Your…

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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Question Help Twenty years ago, 48% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 215 of 750 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the a = 0.1 level of significance. Because npo (1- Po = V 10, the sample size is 5% of the population size, and the sample the requirements for testing the hypothesis (Round to one decimal place as needed.) satisfied. What are the null and alternative hypotheses? Ho: (Type integers or decimals. Do not round.) versus H,: Find the test statistic. Zp =(Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as needed.) Determine the conclusion for this hypothesis test. Choose the correct answer below. O A. Since P-value a, do not…
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Caim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1122 adults, 86% said that they have a cell phone. Find the value of the test statistic 重 The value of the test statistic is (Round to two decimal places as needed.) Clear all Check answer Help me solve this View an example Get more help -
Please solve a,b
What variable will you change in this experiment? This is also called the Independent variable. How will you change it? What variable will you measure in this experiment to determine the effect of the variable you changed? This is also called the Dependent variable. How will you measure it? What variables will you keep the same in this experiment? Check off the items in this list that you would use for this experiment. You may add any items you feel you would need. O Skim milk (which contains lactose) O Lactase drops O Graduated cylinder O Eye dropper O Ice cubes O pH paper O Hot plate O Mixing spoon O Thermometer O Vinegar (acidic) O Test tubes O Glucose test strips O Baking soda (basic) O Other items you feel you would need to use for this experiment.
AP Statistics Unit 4 Free Response Show all your work. Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations. Name 1. The table summarizes the relationship between two categorical variables, grade level and the student's answer to the question, "Do you eat regularly in the school cafeteria?" Grade Eat in café? 9th 130 18 148 Yes No Total 11th 122 88 210 Pd 10th 12th 175 68 34 170 209 238 a. If you choose a student at random, what is the probability they eat regularly in the cafeteria? Total 495 310 805 b. If you choose a student at random, what is the probability they eat regularly in the cafeteria, given that they are in 10th grade? c. If you choose a student at random, are the events "10th grade" and "eats regularly in the cafeteria" independent? Explain how you know. b. Find the probability that the team wins the debate. 2. On Mr. Casper's debate team at…
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Identify the means and the extremes.
Matched Pairs: Write the alternative hypothesis H1, for each claim: New engine management software will increase the gas mileage in your car. My coaching will reduce your golf score.
A marketing company is interested in the proportion of people that will buy a particular product. Match the vocabulary word with its corresponding example. -abcdef The list of the 380 Yes or No answers to whether the person bought the product -abcdef The proportion of the 380 observed people who buy the product -abcdef The answer Yes or No to whether a person bought the product -abcdef The proportion of all people in the company's region who buy the product -abcdef The 380 randomly selected people who are observed to see if they will buy the product -abcdef All people in the marketing company's region Data Variable Parameter Sample Statistic Population
7:19 APPLICATION QUESTIONS Directions: This class is like a series of word problems. Not only with the problems be in words, but also you will have to explain what the statistical results mean in words. Therefore, the skill of going from words to math and math to words will be crucial. Write the italicized portion of each statement in mathematical notation. Only the italicized portion needs to be translated into notation: 5G UC lll 23% Example: Test whether the mean of a population is 12. Answer: μ = 12 13. A researcher took a sample. The mean of the sample was 192. 14. They assumed that the population standard deviation was 0.174. 15. An analyst wanted to test whether the population mean was more than 25. 16. A sample was taken and its standard deviation was 7.3. 17. A sample of 30 tax returns was taken, so the sample size is 30. 18. Is the mean of this population smaller than 14? 19. A researcher argued that the population mean was not 215. 20. Test whether the population proportion…
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Step 1 (State the hypotheses) Your answer Step 2 (Level of Significance) Your answer