7.3.29-1|Question HelpA student wants to estimate the mean score of all college students for a particular exam. First use the range rule of thumb to make arough estimate of the standard deviation of those scores. Possible scores range from 200 to 1000. Use technology and the estimatedstandard deviation to determine the sample size corresponding to a 95% confidence level and a margin of error of 100 points. What isn'tquite right with this exercise?The range rule of thumb estimate for the standard deviation is N(Type an integer or a fraction.)

Solution: From the given information, the possible scores range from 200 to 1000. Here, the largest…

Answered: 7.3.29-1| Question Help A student wants…

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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After finding the range for the age variable, you worry that perhaps this value is being influenced by extreme scores! So, you decide to find the interquartile range. After all, you know the IQR has some benefits. This time, you go to SPSS and select Analyze > Descriptives > Frequencies. You put the age variable in the "variables" box and then click Statistics. Make sure Quartiles, Mean, Median, Mode, Range, Standard Deviation, and Variance are checked (because it never hurts to get lots of information :). You click continue, then ok.Using the Percentiles that are reported in the output (these are equivalent to Q1, Q2, and Q3), you are able to determine that the interquartile range for the "age" variable is: Group of answer choices 35 20 22 23.29 24 4
Please help me with this problem, it is the last problem and I am just lost, Thank you
Please do not use chatgpt, avoid using it completely, because it does not do the math well, do it by hand step by step The director of a technical school wants to know who earns more, men or women. In a random sample of 40 men and women, he observes that men earn on average $3,700 and a standard deviation of $350, while in a sample of 37 women they earn on average $3,450 and a standard deviation of $320. Should the director reject the null hypothesis of \mu_1 = \mu_2 and accept the alternative hypothesis \mu_1 < \mu_2 at a significance level of 0.05?
Please do not use chatgpt, avoid using it completely, because it does not do the math well, do it by hand step by step The director of a technical school wants to know who earns more, men or women. In a random sample of 40 men and women, he observes that men earn on average $3,700 and a standard deviation of $350, while in a sample of 37 women they earn on average $3,450 and a standard deviation of $320. Should the director reject the null hypothesis of \mu_1 = \mu_2 and accept the alternative hypothesis \mu_1 < \mu_2 at a significance level of 0.05? LEGIBLE!!!!
A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 239.7-cm and a standard deviation of 0.8-cm. For shipment, 5 steel rods are bundled together.Find P58, which is the average length separating the smallest 58% bundles from the largest 42% bundles. P58 = -cmEnter your answer as a number accurate to 2 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
You want to estimate the mean weight of quarters in circulation. A sample of 40 quarters has a mean weight of 5.626 grams and a standard deviation of 0.059 gram. Use a single value to estimate the mean weight of all quarters. Also, find the 95% confidence interval for the average weight of all quarters. The estimate for the mean weight of all quarters is (Round to three decimal places as needed.) an example Get more help - grams. Clear all

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