A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1464 and the standard deviation was 310. The test scores of four students selected at random are 1880, 1200, 2170, and 1360. Find the z-scores that correspond to each value and determine whether any of the values areunusual.The z-score for 1880 is(Round to two decimal places as needed.)The z-score for 1200 is(Round to two decimal places as needed.)The z-score for 2170 is(Round to two decimal places as needed.)The z-score for 1360 is.(Round to two decimal places as needed.)Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice.O A. The unusual value(s) is/are(Use a comma to separate answers as needed.)O B. None of the values are unusual.

Answered: Image /qna-images/answer/9270abd3-19b2-4c20-b132-6959ddb468fe.jpg

Answered: A standardized exam's scores are…

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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Use the table to find the standard score and percentile of the following data values. a. A data value 3 standard deviations below the mean. b. A data value 1.4 standard deviations below the mean. c. A data value 1.6 standard deviations above the mean. Click the icon to view the standard scores and percentiles f a. The standard score is -3, and the percentile is 0.13. (Type integers or decimals.) b. The standard score is (Type integers or decimals.) and the percentile is Standard Scores and Percentiles Standard Scores and Percentiles for a Normal Distribution z-score Percentile z-score Percentile Z-score Percentile z-score -3.5 50.00 0.02 <-1.0 15.87 0.0 0.13 -0.95 0.05 51.99 0.19 0.10 53.98 55.98 0.26 0.15 0.20 57.93 0.25 59.87 61.79 63.68 65.54 67.38 60.15 <-3.0 -29 -28 -27 -26 -25 -24 -23 -22 -21 0.35 0.47 0.62 0.82 1.07 1.39 1.79 <-0.90 -0.85 <-0.80 -0.75 -0.70 -0.65 -0.60 -0.55 <-0.50 17.11 18.41 19.77 21.19 22.66 24.20 25.78 27.43 29.12 30.85 0.30 0.35 0.40 0.45 0.50 2-score…
For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 36 beats per minute, the mean of the listed pulse rates is x overbar equals 78.0 beats per minute, and their standard deviation is sequals 22.6 beats per minute a. The difference is beats per minute. (Type an integer or a decimal. Do not round.) b. The difference is standard deviations. (Round to two decimal places as needed.)
A data set lists weights (lb) of plastic discarded by households . The highest weight is 5.47 lb , the mean of all of the weights is x = 2.308 lb , and the standard deviation of the weights is s=1.744 lb a. What is the difference between the weight of 5.47 lb and the mean of the weights? b. How many standard deviations is that (the difference found in part (a)? c. Convert the weight of 5.47 lb to a z score d . If we consider weights that convert to z scores between - 2 and 2 to be neither significantly low nor significantly high , is the weight of 5.47 lb significant ?
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1550 and the standard deviation was 310. The test scores of four students selected at random are 1980, 1290, 2220, and 1460. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The z-score for 1980 is nothing. (Round to two decimal places as needed.) The z-score for 1290 is nothing. (Round to two decimal places as needed.) The z-score for 2220 is nothing. (Round to two decimal places as needed.) The z-score for 1460 is nothing. (Round to two decimal places as needed.) Which values, if any, are unusual? Select the correct choice below and, if necessary, fill in the answer box within your choice. A. The unusual value(s) is/are nothing. (Use a comma to separate answers as needed.) B. None of the values are unusual.
One of the z-score formulas will help on this question. Scores on the SAT test are normally distributed with a mean of 500 and standard deviation of 100 points. Pretend someone scored 700 on the math portion of the SAT test. What would be the z-score cut off for this score? A. 1.2 B. 2.0 C. 1.0 D. 4.0
Ava scored a 92 on a test with a mean of 71 and a standard deviation of 15. Charlotte scored a 688 on a test with a mean of 493 and a standard deviation of 150. What score would I have to get on a test with a mean of 85 and a standarddeviation of 15 to have the best score out of the three of us?
POSITIVE z Scores NEGATIVE z Scores Standard Normal (7) Distribution: Cumulative Area from the LEFT Standard Normal (z) Distribution: Cumulative Area from the LEFT .00 04 00 03 04 09 00 so00 S040 sa SA SS7 SS7 S6 -150 02 SPI San and lower --34 -33 0001 000s AS 04 700 000s 000s 0004 0003 0004 D003 D004 000s 0004 00os 000s D00s 0002 00os 000s Do04 0004 06 7334 75 7 -32 -31 0007 0007 0oos 0oos D007 D00 42 04 4 0009 0009 -30 -29 0008 com cos oon O 4 9 As A40 A3S A ASS4 S77 oon Dos -28 002s 0023 0022 o020 12 -27 0027 -26 -25 0047 D04 Doss 0045 0044 0040 3279 0062 .0054 o0s2 0os. 0049 0048 14 9192 9207 9022 a19 0060 9332 9345 340 -24 -23 0075 .0071 16 9452 9545 9554 -22 ono 3006 21 3726 -20 022 027 0222 to 0274 0212 020 0202 0256 20 -19 02s0 0244 029 0233 21 -18 0344 0329 0409 .0401 O5os. 0495 22 978 0294 s wo -17 0436 OS37 0427 0375 0465 23 24 9920 922 025 -16 -15 0475 ose2 9934 045S 25 940 e 0643 0630 26 -14 0735 0721 094 27 9972 -13 28 999 9980 -12 020 29 M 1357 1292 321 1251 1230 3210…
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. The indicated IQ score, x, is (Round to ene decimal place as needed.) 0.99
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. The indicated IQ score, x, is (Round to one decimal place as needed.) 0.85 X G G
Find the indicated IQ score. The graph to the right depicts lQ scores of adults, and those scores Next QueStior buted with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table. Click to view page 2 of the table. 0.99 The indicated IQ score, x, is . (Round to one decimal place as needed.)
Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The standard deviation of students' lab measurements is ?σ = 10 milligrams. Juan repeats the measurement 4 times and records the mean ?x of his 4 measurements. How many times must Juan repeat the measurement to reduce the standard deviation of ?⎯⎯⎯x¯ to 2? Give your answer as a whole number.
Abby's score of 704 on the math portion of the 2002 GRE exam placed her in the 84th percentile rank. The standard deviation of this exam was 141. If the test scores are normally distributed, what was the mean score of the 2002 test takers? write your answer with one decimal place.

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