The performance of students at a local community was recorded and categorized based on student's faculty. The gathered data was then analyzed by a statistician and the results obtained using MINITAB are shown below: Expected counts are printed below observed counts High Low Average Total Science 12 30 52 94 (15.67) (29.24) (49.09) Humanities 14 20 30 ** (10.67) (19.91) (33.42) Law 4 6 12 22 (*) (6.84) (11.49) Total 30 56 94 180 Chi-sq = 0.020 + 0.858 + *** + 1.042 0.000 + 0.350 + 0.030 + 0.104 + 0.023 =2.600

The performance of students at a local community was recorded and categorized based on student's faculty. The gathered data was then analyzed by a statistician and the results obtained using MINITAB are shown below: Expected counts are printed below observed counts High Low Average Total Science 12 30 52 94 (15.67) (29.24) (49.09) Humanities 14 20 30 ** (10.67) (19.91) (33.42) Law 4 6 12 22 (*) (6.84) (11.49) Total 30 56 94 180 Chi-sq = 0.020 + 0.858 + *** + 1.042 0.000 + 0.350 + 0.030 + 0.104 + 0.023 =2.600

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

See similar textbooks

Similar questions

What is meant by the sample space of an experiment?
A corporation that maintains a large fleet of company cars for the use of its sales staff is interested in the mean distance driven monthly per sales person. The following table gives the monthly distances in miles driven by a random sample of 10 sales persons: 2013, 2226, 2561, 1872, 2088, 2639, 2055, 2126, 2613, 2667 Based on this sample, find a 90% confidence interval for the mean number of miles driven monthly by members of the sales staff, assuming that monthly driving distances are normally distributed. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) What is the lower limit of the confidence interval? What is the upper limit of the confidence interval?
A corporation that maintains a large fleet of company cars for the use of its sales staff is interested in the mean distance driven monthly per salesperson. The following list gives the monthly distances in miles driven by a random sample of 12 salespeople.2116, 2682,2543, 2480, 2684, 2005, 2015, 2515, 2152, 2699, 2470, 2474 Send data to calculator Based on this sample, find a 90%confidence interval for the mean number of miles driven monthly by members of the sales staff, assuming that monthly driving distances are normally distributed. Give the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: Upper limit:
A nationwide job recruiting firm wants to compare the annual incomes for childcare workers in New York and Illinois. Due to recent trends in the childcare industry, the firm suspects that the that the mean annual income of childcare workers in the state of New York is greater than the mean annual income of childcare workers in Illinois. To see if this is true, the firm selected a random sample of 20 childcare workers from New York and an independent random sample of 20 childcare workers from Illinois and asked them to report their mean annual income. The data obtained were as follows. Annual income in dollars New York 46686 , 34979 , 47325 , 48892 , 51128 , 56792 , 47785 , 48995 , 57301 , 55176 , 48002 , 45718 , 50351 , 58527 , 47067 , 53699 , 54361 , 49727 , 36426 , 50870 Illinois 48009 , 46871 , 42774 , 49790 , 43163 , 45401 , 41068 , 50300 , 47064 , 42003 , 47775 , 41917…
Most adults would erase all of their personal information online if they could. A software firm survey of 636 randomly selected adults showed that 61% of them would erase all of their personal information online if they could. Find the value of the test statistic.
FIND THE test statistics value FOR TWO TAILED TEST SAMPLe sixe 26 and level of significance is .05
A random sample of residents from various income brackets were asked their opinion on tax reformfor the country of Guyana. The data so gathered were analyzed by a statistician and the results heobtained using MINITAB are shown below:Expected counts are printed below observed countsLow Middle High TotalFor 26(30.67)75(51.11)14(33.22)115Against 60(69.33)95(115.56)105(**)260Neutral 34(20)30(33.33)11(21.67)75Total * 200 130 450Chi-sq = 0.71 + 11.17 + 11.12 +*** + 3.66 + 11.89 +9.8 + 0.33 + 5.25 = 55.2DF = ??, p-value =???a) Carefully define the null and alternative hypotheses of the ?2 test underlying the generationof the above table. [2]b) Find the missing values ‘*’, ‘**’, ‘***’, ‘??’ and ‘???’. [7]c) What is the conclusion of this test? Give reasons for your answer.
The manager of a computer software company wishes to study the number of hours seniorexecutives by type of industry spend at their desktop computers. The manager selected asample of 10 executives from each of three industries. At the .05 level of significance, canshe conclude there is a difference in the mean number of hours spent per week by industry?
Most adults would erase all of their personal information online if they could a software firm of 413 random selected adults show that 59% of them would erase all of their personal information online if they could find the value of the test statistic
A corporation that maintains a large fleet of company cars for the use of its sales staff is interested in the mean distance driven monthly per sales person. The following list gives the monthly distances in miles driven by a random sample of 10 sales persons. 2255 , 2610 , 2566 , 2645 , 2671, 1979, 2434, 2485, 2290, 2580 Send data to calculator Based on this sample, find a 95% confidence interval for the mean number of miles driven monthly by members of the sales staff, assuming that monthly driving distances are normally distributed. Then find the lower limit and upper limit of the 95% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: ? Upper limit: ?
The fun size of a Snickers bar is supposed to weigh 20 grams. Because the penalty for selling candy bars under their advertised weight is severe, the manufacturer calibrates the machine so the mean weight is 20.1 grams. The quality-control engineer at MMMars, the Snickers manufacturer, is concerned about the calibration. He obtains a random sample of 10 candy bars, weighs them, and obtains the data shown in Table. Should the machine be shut down and calibrated? Because shutting down the plant is very expensive, he decides to conduct the test at the α = 0.01 level of significance. Weight: 19.6 19.9 20.5 21.5 20.6 20.6 20.3 19.7 19.5
A group of health conscious researchers were interested in ways to lower blood pressure. The study consisted of 90 participants. 30 participants were randomly assigned to eat a heart healthy diet, 30 were randomly assigned to a heart healthy exercise routine, and 30 were randomly assigned to do nothing and serve as a control. After a month of their assigned intervention, participants' blood pressure was measured. Which statistical test should be used to compare the 3 intervention types on post-treatment blood pressure? Select one: a. One-way between subjects ANOVA b. One-way repeated measures ANOVA Incorrect c. Two-way between subjects ANOVA d. None of these options