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- Please explain throgouhly how do we get z=1.961. Below are the results of 30 sixth-grade I.Q. scores. 92 95 97 100 102 106 93 95 98 100 103 108 94 97 99 100 103 108 94 97 100 100 103 108 94 97 100 101 104 109 The histogram for the raw data of 30 sixth-grade I.Q. scores is presented in the graph. 20 18 16 14 12 10 87 94 101 108 115 122 IQ scores Using statistical knowledge, state one valid observation about the distribution of data in context of the scenario. Be sure to write one complete sentence, i.e., use college-level writing, in order to earn full credit. Number of StudentsSuppose you draw an observation (x = 191) from non-std normal distribution, X~N(162,16). We can convert x from this non-standard normal distribution to a standard normal distribution Z~N(0,1). If we do this, then our observation becomes z = ______. (Round your answer to two decimal places, ex: 0.12)
- 6.9 To enter the cumulative normal distribution table Þ(Z), calculate Z and Z at the spec limits. upper lower Þ(2) = 0.9772 and Þ(-2) = 0.0228, the area to the right of the USL plus to the left of the LSL is 0.0456.Suppose you draw an observation (x = 147) from non-std normal distribution, X~N(160,13). We can convert x from this non-standard normal distribution to a standard normal distribution Z~N(0,1). If we do this, then our observation becomes z = ______.(Round your answer to two decimal places, ex: 0.12)Suppose you draw an observation (x = 154) from non-std normal distribution, X~N(143,16). We can convert x from this non-standard normal distribution to a standard normal distribution Z~N(0,1). If we do this, then our observation becomes z = ______.(Round your answer to two decimal places, ex: 0.12)
- st K Find the standard deviation, s, of sample data summarized in the frequency distribution table below by using the formula below, where x represents the class midpoint, f represents the class frequency, and n represents the total number of sample values. Also, compare the computed standard deviation to the standard deviation obtained from the original list of data values, 11.1. S= n [Σ(+•x2)]- [Σ«•x)]2 n(n-1) Interval Frequency 20-29 1 30-39 4 40-49 5 ... Standard deviation = (Round to one decimal place as needed.) 50-59 3 60-69 8 70-79 32 80-89 C 3933. If X is a normal variate with mean u and variance X- o? and P - b< .2N Suppose Z follows the standard normal distr decimal places. (a) P(Z ≤ 1.81) = 0 (b) P (Z > 0.72) = ☐ (c) P(-0.653.1 Suppose X ~ N(18, 7). What value of x has a z-score of -2.16? Round to 2 decimal places..The annual earnings of 14 randomly selected computer software engineers have a sample standard deviation of $3663. Assume the sample is from a normally distributed population. Construct a confidence interval for the population variance o and the population standard deviation o. Use a 99% level of confidence. Interpret the results. _2 What is the confidence interval for the population variance o? ) (Round to the nearest integer as needed.) Help me solve this View an example Get more help - Clear all Check answer 820 AM Type here to search 55'F A D 99+ 12/4/2021 XL-BTY 10/05/17 Insert Delete PrtSc F11 F12 F9 F10 F8 F7 F6 AI F2 Num Lock F5 F4 Esc F3 Backspace F1 23 24 7 9- 4 5 6 7. 3 U Ente 王 + II * 00 团please,detailed solution for you to understandSEE MORE QUESTIONSRecommended textbooks for youMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. FreemanMATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th…StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C…StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage LearningElementary Statistics: Picturing the World (7th E…StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman