6. The following table gives the frequency distribution of marks obtained by 150 students in acertain examination.Marks:0–1010-2020-3030-4040–5050–6060–7070-80No. of students: 71020403028105From the above distribution, calculate the standard deviation and the co-efficient of varia-tion.

Answered: Image /qna-images/answer/b6fd42d2-0b7d-49d7-912c-5a3faa9f60d3.jpg

Answered: 6. The following table gives the…

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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Students in Mr Brawn's exercise class have to do press-ups and sit-ups. The number of press-ups x and the number of sit-ups y done by a random sample of 8 students are summarised below. Σχy = 11 222, Σε = 272, Σy = 320, Σχ" = 10 164, Σy = 13 464. The addition of the mean and standard deviation of the number of press-ups done by these students, is (A) 44 (B) 44.07 (C) 44.70 (D)None of these * Q3
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Hello, I need a little help with how to find the Deviation from Mean with attached information for capacitors in series and parallel. Thank you.
Assume that weights of adult females are normally distributed with a mean of 79 kg and a standard deviation of 20 kg. What percentage of individual adult females have weights between 73 kg and 85 kg? If samples of 64 adult females are randomly selected and the mean weight is computed for each sample, what percentage of the sample means are between 73 kg and 85 kg? The percentage of individual adult females with weights between 73 kg and 85 kg is 23.6 % (Round to one decimal place as needed.) The percentage of samples of 64 adult females with mean weights between 73 kg and 85 kg is (Round to one decimal place as needed.)
Paramesan cheese is aged for an average of 24 months to allow it to develop the desire richness in flavor the standard deviation for the length of time Parmesan cheese is aged is 3.7 months How long would Parmesan cheese have to be aged in order to be in the 90th percentile? Assume that the data is normally distributed
Suppose that the speeds of car is traveling in California freeways are normally distributed with a mean of 63 mph. The highway patrols policy is to issue tickets for cars with speeds exceeding 80 mph. The records show that exactly 2% of the speed succeed this limit find the standard deviation of the speed of cars traveling on California’s freeway. Carry your intermediate computations to at least four decimal places in round your answer to at least one decimal place.
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