(1).StudentScore on first test310 11 12 13 14444 635 616 409 545 605 516 395 561 471 632 387 337 461Score on second test 450 698 674 448 489 630 496 543 636 558 643 407 374 49348.(c) Calculate d andd =(Type an integer or a decimal. Round to three decimal places as needed.)Calculate sd.(Type an integer or a decimal. Round to three decimal places as needed.)(d) Use the t-test to find the standardized test statistic t.t%3D(Tune an integer or a decimal Round to three decimnal places as neededY (e) Decide whether to reject or fail to reject the null hypothesis. Choose the correct answer below.Reject the null hypothesis.Fail to reject the null hypothesis.(f) Interpret the decision in the context of the original claim. Choose the correct answer below.O A. The sample was not large enough to make a conclusion.O B. At the 1% significance level, there is enough evidence that the students' critical reading scores improved the second time they took the test.O C. At the 1% significance level, there is not enough evidence that the students' critical reading scores improved the second time they took the test.O D. At the 1% significance level, there is evidence that the students' critical reading scores got worse the second time they took the test.Click to select your answer(s).

Name: (1).StudentScore on first test310 11 12 13 14444 635 616 409 545 605
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Description: (1).StudentScore on first test310 11 12 13 14444 635 616 409 545 605 516 395 561 471 632 387 337 461Score on second test 450 698 674 448 489 630 496 543 636 558 643 407 374 49348.(c) Calculate d andd =(Type an integer or a decimal. Round to three de

First Second D (D-dbar)^2 444 450 6 1019.434 635 698 63 628.5765 616 674 58 402.8622 409 448…

Math

Statistics

C) Calculate d and sg. d = (Type an integer or a decimal. Round to three decimal places as needed.) Calculate %3D (Type an integer or a decimal. Round to three decimal places as needed.) E) Use the t-test to find the standardized test statistic t. t = (Tune an integer or a decimal Round to three decimal nlaces as neededY

C) Calculate d and sg. d = (Type an integer or a decimal. Round to three decimal places as needed.) Calculate %3D (Type an integer or a decimal. Round to three decimal places as needed.) E) Use the t-test to find the standardized test statistic t. t = (Tune an integer or a decimal Round to three decimal nlaces as neededY

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 31E

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Kaitlyn measures the upload speed in megabits per second of her home broadband internet connection during peak hours and off-peak hours. The results are provided in the accompanying table. Peak Off-Peak 5.83 5.14 6.05 6.80 7.14 6.98 3.54 5.77 5.45 7.27 5.90 6.62 5.81 6.19 4.82 6.08 6.37 6.59 4.65 5.58 5.30 7.41 6.48 6.26 5.96 6.37 5.79 6.31 6.84 6.55 5.06 4.95 5.61 7.03 6.45 6.77 Examine the results of Kaitlyn's test to determine the statements that compare the medians and interquartile ranges of the data sets to each other in terms of this situation. Select the two correct answers. The median upload speed during peak hours is 5.905 megabits per second, which is less than the median upload speed during off-peak hours, 7.005 megabits per second. The upload speeds during peak hours are slower on average compared to off-peak times. The median upload speed during peak hours is 6.37 megabits per second, which is greater than the median upload speed during…
The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013): Table: Economic Dynamism ($) of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Compute a 95% confidence interval for the mean economic dynamism of middle-income countries by answering the following questions: (i) Determine sample mean x :i Determine sample mean x : Enter in decimal form to nearest ten-thousandth. Do not enter units of measure. Examples of correctly entered answers: 0.0015 0.0000 136.7000 99.0070 36.9128 (ii) Determine sample standard deviation s : Enter in decimal form to nearest ten-thousandth. Examples of correctly entered answers: 0.0001…
The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013). Table: Economic Dynamism of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Countries that are considered high-income have a mean economic dynamism of 60.29. Do the data show that the mean economic dynamism of middle-income countries is less than the mean for high-income countries? Test at the 5% level. (iv) Determine sample mean x :iv Determine sample mean x : Enter answer to nearest ten-thousandth, without "$" sign. Examples of correctly entered answers: 11.2385 0.0079 3.0500 7.4000 (v) Determine sample…
The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013). Table: Economic Dynamism of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Countries that are considered high-income have a mean economic dynamism of 60.29. Do the data show that the mean economic dynamism of middle-income countries is less than the mean for high-income countries? Test at the 5% level. (i) Which of the following statements correctly defines the null hypothesis HO? A.  μ < $60.29 B.  p < $60.29 C. μ = $60.29 D. p = $60.29 Enter letter corresponding to correct answer (ii) Which of the following…
The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013): Table:   Economic Dynamism ($) of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Compute a 95% confidence interval for the mean economic dynamism of middle-income countries by answering the following questions (iv) Determine t score corresponding to desired confidence level Enter value in decimal form rounded to nearest hundredth. Examples of correctly entered answers: 2.01 0.37 0.60 0.00 (v) Determine error bound of the mean: Enter value in decimal form rounded to nearest ten-thousandth. Examples of correctly entered answers: 0.0000     0.0003     3.0060     2.0700…
The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013): Table:   Economic Dynamism ($) of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Compute a 95% confidence interval for the mean economic dynamism of middle-income countries by answering the following questions: (vii) Using the confidence interval, select the correct description of the result of the survey: A. We estimate with 95% confidence that the true proportion mean economic dynamism for middle-income countries is between $40.21 and $47.54. B. We estimate with 95% confidence that the proportional economic dynamism for middle-income countries is between $40.21 and $47.54. C. We estimate…
The economic dynamism, which is the index of productive growth (in dollars) for countries that are designated by the World Bank as middle-income are in following table ("SOCR data 2008," 2013). Table: Economic Dynamism of Middle Income Countries 25.8057 37.4511 51.915 43.6952 47.8506 43.7178 58.0767 41.1648 38.0793 37.7251 39.6553 42.0265 48.6159 43.8555 49.1361 61.9281 41.9543 44.9346 46.0521 48.3652 43.6252 50.9866 59.1724 39.6282 33.6074 21.6643 Countries that are considered high-income have a mean economic dynamism of 60.29. Do the data show that the mean economic dynamism of middle-income countries is less than the mean for high-income countries? Test at the 5% level. (x) Select the statement that most correctly interprets the result of this test: A. The result is statistically significant at .05 level of significance. Evidence supports the claim that the mean economic dynamism for a middle-income…
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A sample of n = 5 college students yielded the following observations on number of traffic citations for a moving violation during the previous year. x1 = 1 x2 = 0, x3 = 0 x4 = 7 x5 = 5 Calculate s2 and s. (Round all answers to four decimal places.) s2 = s =
These are the lengths of ¾ in screws produced by a particular 0.757 0.740 0.744 0.744 0.758 0.754 0.724 0.765 0.763 0.740 0.757 0.736 0.738 0.76 0.737 0.722 0.76 0.758 0.761 0.725 0.743 0.759 0.724 0.724 Test the claim that the screws have a mean length equal to ¾ in. at an appropriate significance level.
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