andDetermine the upper-tail critical value to/2 in each of the following circumstances.a. 1-α=0.95, n = 13d. 1-q=0.95, n = 38b. 1-a=0.99, n = 13e. 1-α=0.90, n = 62c. 1-α=0.95, n = 46Click here to view page 1 of the table of critical values for the t distribution.Click here to view page 2 of the table of critical values for the t distribution.C...a. t=(Round to four decimal places as needed.)b. t=(Round to four decimal places as needed.)c. t=(Round to four decimal places as needed.)d. t=(Round to four decimal places as needed.)e.t=(Round to four decimal places as needed.)Get more help.View instructor tip Help me solve thisType here to search.79°FNextlla

Answered: Determine the upper-tail critical value…

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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Calculating a 95% Cl of the mean for a continuous, numerical variable measured on 100 experimental units requires: A) The critical t value for the .99 quantile (99 percentile) of the t distribution with df = 99 B) The critical t value for the .99 quantile (99 percentile) of the t distribution with df = 95 C) The samble mean D) The critical t value for the .975 quantile (97.5 percentile) of the t distribution with df = 99 E) The critical t value for the .975 quantile (97.5 percentile) of the t distribution with df = 95
For the following claim, find the critical value. Assume that a simple random sample has been selected from a normally distributed population. Claim: The mean IQ score of statistics professors is greater than 118. Sample data: n=21, x= 119, s= 10. The significance level is a= 0.05. Click the icon to view a table of critical t-values. Find the critical value using at-distribution table, The critical value is (Round to three decimal places as needed.) io
Suppose, household color TVs are replaced at an average age of μ = 9.0 years after purchase, and the (95% of data) range was from 5.8 to 12.2 years. Thus, the range was 12.2 − 5.8 = 6.4 years. Let x be the age (in years) at which a color TV is replaced. Assume that x has a distribution that is approximately normal. (a) The empirical rule indicates that for a symmetric and bell-shaped distribution, approximately 95% of the data lies within two standard deviations of the mean. Therefore, a 95% range of data values extending from μ − 2σ to μ + 2σ is often used for "commonly occurring" data values. Note that the interval from μ − 2σ to μ + 2σ is 4σ in length. This leads to a "rule of thumb" for estimating the standard deviation from a 95% range of data values. Estimating the standard deviationFor a symmetric, bell-shaped distribution, standard deviation ≈ range 4 ≈ high value − low value 4 where it is estimated that about 95% of the commonly occurring data…
For each substance, estimate the standard deviation o by assuming uniform distribution and normal distribution shown in Table 8.11 in Section 8.8. (Round your answers to 4 decimal places.) Uniform Distribution Normal Distribution Chromium Barium Fluoride
Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) below. TInterval (13.046,22.15) E Click the icon to view a t distribution table. x= 17.598 Sx = 16.01712719 n= 50 a. What is the number of degrees of freedom that should be used for finding the critical value t2? df = (Type a whole number.) b. Find the critical value t2 corresponding to a 95% confidence level. a/2 = (Round to two decimal places as needed.) c. Give a brief general description of the number of degrees of freedom. O A. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary after certain restrictions have been imposed on all data values. OB. The number of degrees of freedom for a collection of sample data is the number of unique, non-repeated sample values. O C. The number of degrees of freedom for a collection of sample data is the number of sample values that are determined after certain…
A normal distribution has μ = 32 and σ = 5. Find the z score corresponding to x = 27. Find the z score corresponding to x = 46. Find the raw score corresponding to z = −3. Find the raw score corresponding to z = 1.1.
The undergraduate grade point averages (UGPA) of students taking an admissions test in a recent year can be approximated by a normal distribution, as shown in the figure. (a) What is the minimum UGPA that would still place a student in the top 10% of UGPAs? (b) Between what two values does the middle 50% of the UGPAs lie? 3.4042.8Grade point average μ=3.40 σ=0.17 x A normal curve labeled mu = 3.40 and sigma = 0.17 is over a horizontal x-axis labeled Grade point average from 2.8 to 4 in increments of 0.3 and is centered on 3.40. (a) The minimum UGPA that would still place a student in the top 10% of UGPAs is nothing. (Round to two decimal places as needed.) (b) The middle 50% of UGPAs lies between nothing on the low end and nothing on the high end. (Round to two decimal places as needed.)
A distribution with a mean of μ =41 and a standard deviation of σ = 4 is transformed into a standardized distribution with μ=100 and σ= 20. Find the new, standardized score for each of the following values from the original population. 1.Original X= 39. Transformed X=? 2.Original X=36 . Transformed X=? 3.Original X=45. Transformed X=? 4.Original X=50. Transformed X=?
Suppose that the average life of a refrigerator before replacement is μ = 15 years with a (68%of data) range from 13 to 17 years. Let x = age at which a refrigerator is replaced. Assumethat x has a distribution that is approximately normal. Find a good approximation for thestandard deviation of x values.

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