DEEPENDEEPENNow that you have learned the important skills in formulating hypothesis, your goai in thissection is to accomplish the activity below where we can apply the concepts that you havelearned.ACTIVITY 1i: NULL AND ALTERNATIVE HYPOTHESISDirection: State the null hypothesis and the alternative hypothesis in (a) words and in (b)symbols for each of the following. Write your answer on the space provided.2) According to a factory employer, the mean working time or workers in thefactory is 6 hours with a standard deviation of 0.5 hours. A researcherinterviewed 50% of the employees and found out that their mean workingtime is 8 hours with a standard deviation of 1 hour. The a level is 0.05.3) A random sample of 200 students got a mean score of 62 with a standarddeviation score of 5 in a knowledge test in mathematics. In thestandardization of the test, H = 50 with o = 10.

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Answered: Direction: State the null hypothesis…

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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A particular fruit's weights are normally distributed, with a mean of 419 grams and a standard deviation of 7 grams.If you pick 3 fruits at random, then 9% of the time, their mean weight will be greater than how many grams?Give your answer to the nearest gram.
A sales manager believes that the mean number of days per year her company's sales representatives spend traveling is less than 50. A test is made of ?0 ? = 7 ?????? ?1 ? < 50. The null hypothesis is not rejected. State an appropriate conclusion.
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A particular fruit's weights are normally distributed, with a mean of 613 grams and a standard deviation of 19 grams.If you pick 20 fruits at random, then 11% of the time, their mean weight will be greater than how many grams?Give your answer to the nearest gram.
Use z scores to compare the given values. The tallest living man at one time had a height of 238 cm. The shortest living man at that time had a height of 142.4 cm. Heights of men at that time had a mean of 175.45 cm and a standard deviation of 5.59 cm. Which of these two men had the height that was more extreme? ... Since the z score for the tallest man is z = 0 and the z score for the shortest man is z = the man had the height that was Im- more extreme. (Round to two decimal places.) shortest tallest
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A particular fruit's weights are normally distributed, with a mean of 689 grams and a standard deviation of 13 grams.If you pick 10 fruits at random, then 4% of the time, their mean weight will be greater than how many grams?Give your answer to the nearest gram.
The mean age of all 663 used cars for sale in a newspaper one Saturday last month was 7.5 years, with a standard deviation of7.1 years. The distribution ads, a reporter randomly selects 50 of these used cars and plans to visit each owner to inspect the cars. He finds that the mean age of the 50 cars he sam Complete parts a through c. a From the problem statement, which of the values 75,7.1, 7.9, and 5.6 are parameters and which are statistics? The value 7.5 is a The value 7.1 is a The value 7.9 is a The value 5.6 is a
There are frogs and koi in a pond, and the number of frogs and the number of koi in the pond are independent. Let X represent the number of frogs in any given week, and let Y represent the number of koi in any given week. X has a mean of 28 with a standard deviation of 2.7, and Y has a mean of 15 with a standard deviation of 1.6. Which answer choice correctly calculates and interprets the standard deviation of the difference, D = X - Y? = 1.05; this pond can expect the difference of frogs and koi to vary by approximately 1.05 from the mean. = 1.1; this pond can expect the difference of frogs and koi to vary by approximately 1.1 from the mean. = 3.1; this pond can expect the difference of frogs and koi to vary by approximately 3.1 from the mean. = 13; this pond can expect the difference of frogs and koi to vary by approximately 1.05 from the mean.
Two groups of students took the same test. Group A is having a mean of 60 marks and a standard deviation of 5 markS. Group B is having a mean of 60 marks and a standard deviation of 10 marks. Which of the statements below is correct? A. Group A students have a wider spread in performance than that in group B B. Group B students have a wider spread in performance than that in group A C. Group A students have the same spread in performance than that in group B D. None of the above A
The mean annual tuition and fees for a sample of 14 private colleges in California was $ 37,900 with a standard deviation of $7200 . A dotplot shows that is reasonable to assume that the population is approximately normal. Can you conclude that the mean tuition and fees for private institutions state the null and alternative compute the value of the t statuistic ,. How many degrees of freedom state your conclusion

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