A sample of size n = 98 produced the sample mean of 17.4. Assuming the population standard deviation o = %3D 5.2, compute 90% maximum error of estimate of the population mean. (express your ánswer in 2 decimal form; write only the positive ME) Answer:

Q: The standard deviation of a 1500 volume population is 54'cm. In the case of "non-refundable…

A:

Q: For a population with a standard de 12, a score of X = 44 correspo What is the population mean? %3D

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Q: 8) Find the value of x, when the z-score 3, mean = 60 and standard deviation = 12. %3D %3D %D

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Q: Q) Fit the curve of the form ab* to the following data, then find the %3D standard deviation. X 3 4…

A: Given, The data table is: X 3 4 5 6 7 Y 1.8 2.5 3.6 4.7 6.6         To find, Fit the curve y…

Q: For a variable x that is noramally distributed with a mean of μ = 50 and a standard deviation σ = 5,…

A: It is given that the mean and standard deviation are 50 and 5, respectively.

Q: : At 90% confidence, how large a sample should be taken to obtain a margin of error of 0.04 for the…

A: The margin of error (E) is 0.04 and the confidence level is 0.90.

Q: s of cans of diet soda have weights with a mean that is less than the mean for the regular soda.…

A: Data on the weghts of contents of cans of diet soda : Sample size , n = 40. Sample mean , x̅ =…

Q: 14. For a population with a standard deviation of o= 14, a score of X = 24 corresponds to z =-0.50.…

A: 14. The population standard deviation is 14, and value of X is 24. The population mean is,…

Q: (c) Compute the mean and standard deviation, using Hx = np and ox = /np(1 – p). Hx (Round to two…

A:

Q: 8

A: From the given information, The provided side of the square be a random variable X. Thus, X~Nμ=3.3,…

Q: The denominator in the t test formula is the estimated standard error of the mean. the estimated…

A:

Q: On an exam with a mean of M = 98, you obtain a score of  X= 90. Would you prefer a standard…

A: It is not known whether the distribution of the score is symmetric or not. Hence ,we cant use…

Q: A population with a mean of u = 8 has EX = 40. How many scores are in the population?

A: It is given that the mean is 8 and sum of X is 40.

Q: A population has a mean of u = 50 and deviation of o = 20. %3D a. Would a score of X = 70be consider…

A: It is given that the mean is 50 and the standard deviation is 20.

Q: A randam sample of 20 apartments has a mean of AED 4000 and a standard error (a/(vn)) of 1,000. You…

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Q: and post-test samples for n = 49 subjects. The average d deviation of the differences of sa = 46.7.…

A: Given data : sample size, n = 49 sample mean,  = 16.0 sample standard deviation,s= 46.7 population…

Q: Suppose that for a certain population of college students, the mean GPA is 2.84 with a sta deviation…

A: Given that  U=eXV=e2X From the question 9,  EX=2.84σX=0.45

Q: Find the sample size needed for 99% confidence with a margin error within +10W/m² and ±5W/m². Assume…

A: Given Information: Confidence level is 99% i.e., 0.99 Margin of error E1=±10 Margin of error E2=±5…

Q: In a hypothetical scenario, the National Institute of Standards and Technology has received a new…

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Q: v Fl X Q MQM 10 es/4428917/take estion 10 How many commuters must be randomly selected to estimate…

A: Given, Margin of Error E = 4 Standard deviation σ = 6 99% confidence level α = 0.01 Critical value…

Q: average heigth is 163 cm, standart deviation is 10 cm. compute p(X>168 cm) ?

A: Given,μ=163σ=10P(X>168)=?

Q: At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.08 for the…

A: From the given information, Margin error ( E ) = 0.08 Assume sample proportion = 0.5   The objective…

Q: Suppose a population is known to be normally distributed with à méáñ, µ, équal tó 144 and a standard…

A: Given that  A population is normally distributed Mean (μ) = 144 Standard deviation (σ)= 27   We know…

Q: When a population is small, it is not practical to determine its mean and standard deviation by…

A: Farmula used

Q: 10. What is S/N ratio for a system that has a pressure ofx psi and a sample standard deviat Vx for…

A: Given: To find S/N ratio has a pressure of x2 psi and a sample standard deviation of x for 1/x.

Q: Given the following scores in a statistics test, 98, 45, 78, 88, 62, 55, 78, and 85 compute for the:…

A: The mentioned sample of scores in a statistics test are 98, 45, 78, 88, 62, 55, 78, and 85, The…

Q: Given the following data, estimate the standard deviation in the prediction of the unknown…

A: Count (N) = 6Sum ∑x=3.6Mean(μ)=0.6S.D = 1N∑xi-μ2i=1N

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If…

A: Sketch the normal curve and shade the area of 0.1606 to the left of "e" under the normal curve.…

Q: standard deviation s and compare the result to the exact standard deviation of 148.9cm^3, assuming…

A: Given : The brain volumes (cm^3) of 50 brains vary from a low of 956cm^3 to a high of 1484 cm^3

Q: Suppose it is desired to estimate the variance of the tensile strength of a particular type of…

A: Given: The sample pieces of a particular type of thread is n=21. The provided calculation is given…

Q: Use the following table to answer the question & the sub part. 1a.What is the df for the t-test…

A: Given Information: Number of students on pell which is not employed in the campus, n1 = 5854 Number…

Q: At 95% confidence, how large a sample should be taken to obtain a margin of error of 0.05 for the…

A: From the given information, Margin error ( E ) = 0.05 Assume sample proportion = 0.5   The objective…

Q: Use the formula to find the standard error of the distribution of differences in sample means x̅…

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Q: What is the standard error of the estimate (se )? 105.182 1.754 o 1.532 What is the estimate of the…

A: We have used the excel data analysis tool to run the regression analysis.

Q: The standard deviation of a population of 10000 volume is 62cm. In the case of "non-refundable…

A: The formula for sample size for a given confidence interval and population standard deviation is:

Q: solve for t.

A: here given ,  A group of faculty members at a local university agreed that the average annual salary…

Q: 2. A sample of n = 16 scores has a mean of M = 56 and a standard deviation of s = 12. %3D %3D %3D a.…

A: Given information n = 16 Mean M = 56 Sample standard deviation = 16   a) Sample standard deviation…

Q: A population with a mean of μ = 8 has SX = 40. How many scores are in the population?

A: It is given that, the population mean is µ = 6 and ΣX = 40.

Q: For a population with a standard deviation of s = 14, a score of X 5=24 corresponds to z = -0.50.…

A:

Q: A photoconductor film is manufactured at a nominal thickness of 25 mils. The product engineer wishes…

A: Given that    a..We have to find test the claim that reducing the film thickness increases the mean…

Q: Assume that the weight of 1-year-old girls in the USA is normally distributed with Mean = 9.5 kg,…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer first…

Q: The standard deviation of a 1200 volume population is 90cm. Find out how many units the sample…

A: 6.

Q: The standard deviation of a 1500 volume population is 54'cm. Find out how many units the sample…

A:

Q: From the past observations, the standard deviation of a bus to travel from one bus stop to the next…

A: Estimation of sample size is critical to hypothesis testing.

Q: Before it was a defined quantity, separate groups of researchers independently obtained the…

A: Given Information: Consider the given measurements: 299795 ± 5 299794 ± 2 299790 ± 3 299791 ± 2…

Q: Given a normally distributed variable x with mean 10.5, standard deviation of 7, find the value of x…

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Q: A population with a mean of u = 8 has EX 40. How many scores are in the population?

A: From the provided information, Mean (µ) = 8 ∑X = 40

Q: The standard deviation of measurements of a linear dimension of a mechanical part is 0.14 mm. What…

A:

Q: An investigator wants to estimate caffeine consumption in high school students.  How many students…

A: The provided information are:Confidence level = 95% = 0.95So, significance level (alpha) = 1-0.95 =…

Q: Anthony wants to estimate the mean weight, in kilograms, of all Grade 1 pupils in an elementary…

A: Given information, The level of significance is,

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.