A Stihl plant has taken delivery of 1000 LiPo batteries to be usedin their hedge trimmers. They test the capacity q of 12 randomlychosen batteries and find a mean of 2200 mAh and a standarddeviation of 100 mAh. They also know that the operating time (inhours) is 0.05q - (0.002q — 11)², where q is the capacity inmAh.How confident can you be that the mean capacity in that batchis at least 2140 mAh?P number (rtol=0.01, atol=0.0001)You're in a meeting, and the CEO of Stihl asks "so what,approximately, is the mean and standard deviation of theoperating time?" You realize that you have less than 1 minuteand only your old calculator to come up with some answers, andyou also know that an approximate answer is way better than noanswer at all. What's your answer?timeo time?number (rtol=0.01, atol=0.0001)number (rtol=0.01, atol=0.0001)O time?Now assume that you have the test data for the battery capacityq in an array q = [91, 92,.920000] in Matlab. Write Matlabcode that estimates the standard deviation of the operatingtime. What is the standard deviation of the operating time? Hint:Use command trnd () and N = 20,000.number (rtol=0.05, atol=0.0001)

Note: In case of multiple subparts, as per the guidelines, answer to first three subparts will be…

Answered: A Stihl plant has taken delivery of…

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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In the general population, IQ scores are normally distributed with a mean of 95 and a standard deviation of 17. You wish to examine whether post-graduates at RMIT have a different level of intelligence than the general population. You sampled 29 RMIT postgraduates and measured their IQ which resulted in a mean of 116 and a standard deviation of 14.4. Calculate Cohen's d. Give your answer to 2 decimal places.
Does it take a different amount of time for seeds to germinate if they are near rock music that is continuously playing compared to being near classical music? The 48 seeds that were exposed to rock music took an average of 28 days to germinate. The standard deviation was 13 days. The 47 seeds that were exposed to classical music took an average of 32 days to germinate. The standard deviation for these seeds was 10 days. What can be concluded at the a - 0.01 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 Select an answers Select an answerv (please enter a decimal) Hị: Select an answer Select an answer Select an answer v (Please enter a decimal) c. The test statistic ?- (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 ? a f. Based on this, we should Select g. Thus, the final conclusion is that . answer v the null…
A survey taken several years ago found that the average time a person spent reading the local daily newspaper was 10.8 minutes. The standard deviation of the population was 3 minutes. To see whether the average time had changed since the newspaper's format was revised, the newspaper editor surveyed 37 individuals. The average time that the 37 people spent reading the paper was 12.3 minutes. At =α0.01 , is there a change in the average time an individual spends reading the newspaper? Find the 99% confidence interval of the mean. Find the 99% confidence interval of the mean. Round the answers to nearest whole number. <<μ
Suppose that the TSH (Thyroid Stimulating Hormone) levels among healthy individuals are normally distributed with a mean of 3.3 unitsmL. Suppose also that exactly 95% of healthy individuals have TSH levels below 6.2 unitsmL. Find the standard deviation of the distribution of TSH levels of healthy individuals. Carry your intermediate computations to at least four decimal places. Round your answer to at least two decimal places.
A survey collected data from a random sample of 121 people living in Jade city. The sample average of the distance people travel to reach their workplaces (Y) is 23.28 km and the standard deviation (sy) is 7.48 km. The standard error of the sample average of the distance people travel to reach their workplaces is 68 km. (Round your answer to two decimal places.) Let μy denote the mean of the distance all the people in Jade city travel to reach their workplaces. The p-value of the test Ho: #y #22 km vs. H₁: Hy #22 km is (Round your answer to two decimal places.)
If the power received at the MU is lognormal with standard deviation of 9dB, the outage probability can be expressed as erfc(x)/2. determine the value of x given the average power received is -97dBm and the threshold power is -101dBm.
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The nicotine content in cigarettes of a certain brand is normally distributed with mean (in milligrams) u and standard deviation o = 0.1. The brand advertises that the mean nicotine content of their cigarettes is 1.5 mg. Now, suppose a reporter wants to test whether the mean nicotine content is actually higher than advertised. He takes measurements from a SRS of 15 cigarettes of this brand. The sample yields an average of 1.6 mg of nicotine. Conduct a test using a significance level of a = 0.05. (a) The standardized test statistic (b) The critical value (endpoint of Rejection Region) is z* = (c) The final conclusion is OA. The nicotine content is probably higher than advertised. B. There is not sufficient evidence to show that the ad is misleading.
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Suppose the average life of kiwi phones is 4.66 years with standard deviation 1.05 years. Let X represent the average lif of 40 r/s kiwi phones. Find P( x > 5)

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