AAstion listuestion 1uestion 2"uestion 3uestion 4uestion 5uestion 6uestion 74:41uestion 8uestion 9<mylab.pearson.comFind the standard deviation, s, of sample data summarized in the frequency distribution table given below by using theformula below, where x represents the class midpoint, f represents the class frequency, and n represents the totalnumber of sample values. Also, compare the computed standard deviation to the standard deviation obtained fromthe original list of data values, 9.0.S=[π[Σ(-x)] - [Σ+x2n(n-1)IntervalFrequency30-391 140-4925A50-5942Standard deviation - (Round to one decimal place as needed.)60-691870-79780-89 O2n

Interval Frequency 30 - 39 1 40 - 49 25 50 - 59 42 60 - 69 18 70 - 79 7 80 - 89 2

Answered: Find the standard deviation, s, 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 a sample of n = 56 observations The sum of x is ∑x = 4135 The sum of x² is ∑x² = 315647 15 Suppose one of the observations in the data set in the previous question is x = 88. This data point deviates from the mean by ______ standard deviations. a 1.03 b 1.15 c 1.28 d 1.42
An SRS of 25 recent birth records at the local hospital was selected. In the sample, the average birth weight was x = 119.6 ounce Suppose the standard deviation is known to bes = 6.5 ounces. Assume that in the population of all babies born in this hospital, the birth weights follow a Normal distribution, with mean m. Based on the 25 recent birth records, the sampling distribution of the sample mean x can be represented by: a. N(119.6, 1.30). b. N(119.6, 6.5). O c. N(m, 1.30). O d. N(m, 6.5).
The state of California has a mean annual rainfall of 22 inches, whereas the state of New York has a mean annual rainfall of 42 inches. Assume that the standard deviation for both states is 3 inches. A sample of 30 years of rainfall for California and a sample of 45 years of rainfall for New York has been taken. If required, round your answer to three decimal places. (a) Show the sampling distribution of the sample mean annual rainfall for California. E(x) σx̄ California inches inches (b) Show the sampling distribution of the sample mean annual rainfall for New York. E(x) σx̄ New York inches inches (c) In which of the preceding two cases, part (a) or part (b), is the standard error of x smaller? Why? The standard error is - Select your answer -largersmallerItem 5 for New York because the sample size is - Select your answer -largersmallerItem 6 than for California.
A queueing system has an arrival rate of 37 visitors per day (standard deviation of 32) and a service rate of 42 visitors per day (standard deviation of 25). (Round your answer to three decimal places.) What is the coefficient of variation of the arrival rate?
Use the formula to find the standard error of the distribution of differences in sample means, ₁ - ₂. Samples of size 35 from Population 1 with mean 3.1 and standard deviation 1.8 and samples of size 35 from Population 2 with mean 2.0 and standard deviation 1.4 Round your answer for the standard error to two decimal places. standard error = i
Use the formula to find the standard error of the distribution of differences in sample means, ₁ - ₂. Samples of size 23 from Population 1 with mean 6.5 and standard deviation 3.4 and samples of size 40 from Population 2 with mean 7.9 and standard deviation 6.6 Round your answer for the standard error to two decimal places. standard error = PI
ou should complete the table as part of the procedure of finding the variance and standard deviation. Xi (Xi-(mu)) | (Xi-(mu)) | 49 53 60 60 62 63 64 69 73 87 [Note, this is the same set of data points used in problem 6. How does this compare to the standard deviation computed in problem 6? Why might this be smaller?]
A population is normally distributed with mean 16.3 and standard deviation 1.4. (a) Find the intervals representing one, two, and three standard deviations of the mean. one standard deviation (smaller value) (larger value) two standard deviations (smaller value) (larger value) three standard deviations (smaller value) (larger value) (b) What percent of the data lies in each of the intervals in part (a)? (Round your answers to two decimal places.) one standard deviation % two standard deviations % three standard deviations %
please help me solve this practice question using excel
: Make Extra M X Free Paraphrasing For All Lan X webassign.net/web/Student/Assignment-Responses/last?dep=30747023#Q6 Step 4 We have calculated (x - x)² for each data value in the data set. Need Help? XIX (x - x)² 19.36 11.56 T answer to two decimal places. Σ Now use the defining formula for sample standard deviation s = (x - x)² 53.2 19.36 +11.56 +2.56 + 6.76 5-1 Road It me Skip (you cannot come back) My Apps Dashboard | Atlant X VE W 112 Q Search 0 5.4 3.6 12.96 Σ(-x)2 n-1 + 12.96 Rb Lessons - MATH1127: Intro hp ME #* T with n = 5. Recall that the sum is taken over all data values. Simplify and round the final Section 3.2 Measures of Var % 99+ + W ✰ ✰ (

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