Use the following information to answer question 2. Given that u- 1a = 0.3413; u-1.50 = 0.4332; µ-20 = 0.4772; µ - 30 = 0.4987.%3D2. a. The distribution for a Statistics examination is normal with a mean of 60 and a variance of 64(i.e., X - N (60,64). A student is selected at random from the class. What is the probabilitythat the student selected obtains a score between 52 and 76?

Answered: Image /qna-images/answer/4ece3e5a-7e69-4116-85e6-7adfcfaba541.jpg

Answered: 2. a. The distribution for a Statistics…

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 hypothesis regarding the weight of newborn infants at a community hospital is that the mean is 7.1 pounds. A sample of seven infants is randomly selected and their weights at birth are recorded as 6.1, 8.1, 9.1, 10.1, 7.1, 11.1, and 12.1 pounds. What is the sample standard deviation?
The daily high temperature for the month of August in Chicago is normally distributed with a mean of 70 degrees and a standard deviation of 5 degrees. QUESTION 1 What is the probability that a randomly selected August day in Chicago will have a high temperature below 85 degrees? Use the given normal distribution curve below to help you label and shade the correct picture for this problem. O A. 0.9987 О в. 0.0013 OC.0.4987 O D. 0.0087 Save All Answers Save and Submit Click Save and Submit to saue and submit. Click Save All Answers to save all answers. 6:35 PM e Type here to search 11/30/202 10/05/17 F1 F2 F3 F4 F5 F6 F7 F8 PrtSc Insert Delete F9 F10 F11 F12 C@ & 3 5 6 7 080 9- Backspace Num Lock T Y U 1 PI 00 Home + II S4 LI 2
13. According to a recent random sample of 31 Canadian Football League players, the mean age was approximnately 27.71 years with a variance of 2.59. Lonnie Lobowsky of the Yukon Argonauts has an age with Z-score equivalent to 2.21. Determine his age. A. 31 B. 37 C. 33 D. 35 E. 28 -
When Freshman 15 The term "Freshman 15" refers to the claim that college students typically gain 15 lb during their freshman year at college. Assume that the amounts of weight that male college students gain during their freshman year are normally distributed with a mean of 2.6 lb and a standard deviation of 10.8 1b (based on Data Set 13 "Freshman 15"). Find the probability that a randomly selected male college student gains 15 lb or more during his freshman year. What does the result suggest about the claim of the "Freshman 15"?
The likelihood that a bulb is defective is 9%, on a particular line. Ten light bulbs are randomly selected. What are the mean and variance of the number of defective bulbs?
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On average, a banana will last 6.1 days from the time it is purchased in the store to the time it is too rotten to eat. Is the mean time to spoil greater if the banana is hung from the ceiling? The data show results of an experiment with 12 bananas that are hung from the ceiling. Assume that that distribution of the population is normal. 5.5, 6.6, 5.1, 8.4, 7.1, 5.1, 4.8, 5.1, 8.1, 5.4, 7, 7.8 What can be concluded at the the a = 0.05 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer ✓ H₁: ? Select an answer ✓ 4 c. The test statistic?v= (please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) d. The p-value =
On average, a banana will last 6.5 days from the time it is purchased in the store to the time it is too rotten to eat. Is the mean time to spoil different if the banana is hung from the ceiling? The data show results of an experiment with 11 bananas that are hung from the ceiling. Assume that that distribution of the population is normal. 5.3, 6, 5.5, 7, 5.4, 5.7, 6.2, 6.4, 9.1, 8.7, 8.3 What can be concluded at the the a = 0.01 level of significance level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?v Select an answerv H: ?vSelect an answerv C. The test statistic ?v = (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ?v a f. Based on this, we should Select an answerv the null hypothesis. R. Thus, the final conclusion is that 2
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2. a. The distribution for a Statistics examination is normal with a mean of 60 and a variance of 64 (i.e., X- N (60,64). A student is selected at random from the class. What is the probability that the student selected obtains a score between 52 and 76?