Determine degree of freedom, right tailed area, t-value Right tailedPercentiledfarea1. 65th(1)19(2)(3)2. (4)(5)280.10(6)395th29(7)(8)(9)

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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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Q2/ The number of hours worked by 10 employees of small building firm during a week were: 45 46 34 47 44 42 46 42 43 44 Calculate the mean, median and standard deviation of the hours worked by the employees
A5
The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean 2867 and standard deviation 683. One randomly selected customer is observed to see how many calories X that customer consumes. Round all answers to 4 decimal places where possible. The Piggy award will given out to the 2% of customers who consume the most calories. What is the fewest number of calories a person must consume to receive the Piggy award? calories. (Round to the nearest calorie)
Central Limit Theorem: When the maximum SAT score was 2400, scores had a mean = 1518 and standard deviation = 325. Assuming the scores are normally distributed, determine the probability of a score exceeding 1600. If 81 SAT scores are randomly selected, find the probability that their mean score exceeds 1600.
SOLVE FOR CRITICAL VALUE Two suppliers manufacture a plastic gear used in a laser printer. The impact strength of these gears measures in foot-pounds is an important characteristic. A random sample of 10 gears from supplier 1 results in x1 = 290 and s1 = 12 while another random sample of 16 gears from the second supplier results in x2 = 321 and s2 = 22. Is there evidence to support the claim that supplier 2 provides gears with higher mean impact strength. Use a =0.04, and assume that both populations are normally distributed with equal variances.Level of significance = 0.04
The time it takes me to wash the dishes is uniformly distributed between 7 minutes and 16 minutes. What is average time that takes me to wash the dishes? What is the standard deviation of the time that takes me to wash the dishes?
The daily milk production of a herd of Guernsey cows has a Normal distribution with mean 73 pounds and standard deviation 15 That is, the milk production is distributed ?(70,13) for these cows. What percent of Guernsey cows have milk production less than 60 pounds? What percent of Guernsey cows have milk production between 60 and 90 pounds? What milk production amount describes the lowest producing 30% of Guernsey cows?
a) Is it possible for a standard deviation to be negative? Explain mathematically. b) What is the minimum standard deviation possible? c) Can standard deviation be greater than mean?
The average wait time to get seated at a popular restaurant in the city on a Friday night is 12 minutes. Is the mean wait time different for men who wear a tie? Wait times for 14 randomly selected men who were wearing a tie are shown below. Assume that the distribution of the population is normal. 10, 13, 12, 12, 9, 12, 12, 13, 10, 11, 12, 13, 11, 10 What can be concluded at the the a = 0.10 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 answer v H1: ? v Select an answer v 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 answer v the null hypothesis. g. Thus, the final conclusion is that ... The data suggest the population mean is not significantly different from 12 at a = 0.10, so there is statistically insignificant evidence…
Solve using the z score table P(xs 5) O = 3 Z = X-u_ Fill in the graph to represent the desired shaded area and standard deviation line.

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