Question 6Calculate the standard deviation. The volume (in litres) of water consumed by 60 runners during an ultra marathon is presented in the grouped frequencydistribution below.Volume (litres)1.5 < 2.02.0 < 2.52.5 3.03.0 3.5ΣلماRunners82817760

Given data is Volume(litres) Runners 1.5<2.0 8 2.0<2.5 28 2.5<3.0 17 3.0<3.5…

Answered: Question 6 Calculate the standard…

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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Question 14 Find the F-test statistic to test the claim that the population variances are equal. Both distributions are normal. The standard deviation of the first sample is 3.9252 5.5336 is the standard deviation of the second sample. Submit Question LEGO
Question 22 An article reports that its author used a 25-item test (with dichotomous scoring for each item), the mean of total test scores was 14, and the standard deviation of the total test scores was 6. Estimate reliability.
Question 9 The scores on a standardized test are normally distributed with a mean of 95 and standard deviation of 25. What test score is 0.1 standard deviations above the mean? Question Help: D Video Submit Question
Question 10 く Suppose that we are studying the amount of time customers wait in line at the checkout at the Gap and Old Navy. The avérage wait time at both stores is five minutes. At the Gap, the standard deviation for the wait time is 2 minutes; at Old Navy the standard deviation for the wait time is 5 minutes. Because Old Navy has a higher standard deviation, we know that there is Select an answer v in the wait times at Old Navy. Overall, wait times at Old Navy are Select an answer v from the average; wait times at the Gap are Select an answer v near the average.
Question 5 A particular fruit's weights are normally distributed, with a mean of 479 grams and a standard deviation of 17 grams. If you pick 24 fruits at random, then 12% of the time, their mean weight will be greater than how many grams? Give your answer to the nearest gram.
QUESTION 15 Find the standard deviation for the given data. Round your answer to one more decimal place than the original data. 212, 106, 126, 182, 124, 203, 127, 107, 250 20.0 49.9 56.6 52.9
Question 7 Test scores were recorded for students in a statistics class. The scores for the first test had a standard deviation of 3.8 points. The scores from the second test had a standard deviation of 4.8 points. Choose the correct statement below. O The average test grade rose by 1 point. O The higher standard deviation of the second test indicates higher average scores on the second test than on the first test. O The scores of the second test were closer together than the first test. O The scores of the first test were closer together than the second test. O None of the above statements are true. 1 pts
Question 8 A survey found that women's heights are normally distributed with mean 64.2 inches and standard deviation 2.6 inches The survey also found that men's heights are normally distributed with mean 69.6 inches and standard deviation 3.4 inches Most of the live characters employed at an amusement park have height requirements of a minimum of 57 inches and a maximum of 64 inches 1. The percentage of men who meet the height requirement is _____ Circle which one is correct 2. Since most men (meet/do not meet) the height requirement, it is likely that most of the characters are (women/men) 3. The new height requirements are a minimum of______ inches and and maximum of _______inches
Question 17 A distribution of values is normal with a mean of 139.3 and a standard deviation of 37.8. Find Pgar which is the score separating the bottom 64% from the top 36%. 64 Pe4%3D Enter your answer as a number accurate to 1 decimal place. Answers obtained using exact z-score or z-scores rounded to 3 decimal places are accepted.
QUESTION 24 Use the range rule of thumb to approximate the standard deviation. 22, 29, 21, 24, 27, 28, 25, 36 2.8 O3.75 O 4.2 1.65
QUESTION 20 The time spent on social media platforms per day by adults has a distribution with a mean of 125 minutes and a standard deviation of 16 minutes. A random sample of size 16 adults is selected from the population. Find the mean and standard error of the sample mean time spent on social media platforms per day.
QUESTION 20 The time spent on social media platforms per day by adults has a distribution with a mean of 125 minutes and a standard deviation of 16 minutes. A random sample of size 16 adults is selected from the population. Find the mean and standard error of the sample mean time spent on social media platforms per day.

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Question 6 Calculate the standard deviation.