The dot plots show a random selection of commute times in two cities. : ::. City A ..: City B 10 15 20 25 30 35 40 45 50 55 60 Commute Time (in minutes) Which is a valid inference based on the data? A The commute times are shorter and more predictable for City A. The commute times are shorter and more predictable for City B. The commute times are shorter for City A but more predictable for City B. The commute times are shorter for City B but more predictable for City A .... •..

The dot plots show a random selection of commute times in two cities. : ::. City A ..: City B 10 15 20 25 30 35 40 45 50 55 60 Commute Time (in minutes) Which is a valid inference based on the data? A The commute times are shorter and more predictable for City A. The commute times are shorter and more predictable for City B. The commute times are shorter for City A but more predictable for City B. The commute times are shorter for City B but more predictable for City A .... •..

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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The outlier(s) in the data set 10, 17, 20, 21, 27, 22, 25, 24, 40 is (are) O a. 27 and 40 O b. 10 and 40 O c. 10 and 17 O d. 10 Ое. 40
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Part an and b please.
Which of the following is a research hypothesis? A. Liberals and conservatives have the same voting rates. B. The rates of that senior citizens receive moving violations are not different from rates of moving violations seen in teenagers. C. White and African Americans watch the same amount of TV. D. Men and women have different levels of income.
A high school track coach wanted to test whether giving the students an energy drink could affect performance during the 100 meter race. The coach split the 26 boys into two equal sized groups, where Group 1 was given the energy drink and Group 2 was not. The 100 meter race times were recorded during practice and shown in the table below. What inference can be made about the results? Group 1 Group 2 12.2 13 12.5 12.3 13.3 12.8 12.9 13 13 13.8 12.1 13 13 13 13 13 12.1 13 13 13 12.1 13 12.8 13 13 12.6 Mean: 12.7 Mean: 13 Since the simulation shows ( many cases or free cases )? where a mean difference of ( solve for this answer ) or less occurred when the groups were re-randomized, it can be inferred that the mean difference observed in the study was ( very possibly or very unlikely ) ?due to the random assignment of participants into groups, so the results of the study are (…
Mr Alsup asked the studentS in his third-and sixth-period English classes whether they had chosen a topic for thier writing assignment. he recorded the data in a two-way table, as shown below English class Yes No Total Third period 24 6 30 Sixth period 22 3 25 Total 46 9 55 if jannette in in mr alsup sixth-period english class what is the probablity that she has not chosen a topic for her writing assignment? a- 3% b- 5% c- 12% d-14%
The longest study time by Sarah was_______ hours.
use. Do a conclusion about thiS 20.5 "reference" drugs that they imitate. One aspect in which ance times (second received the generic drug first, followed by the reference signed at random to the subjects. Subjects 1 through 10 matched pairs design. Numbers 1 through 20 were as- TABLE 20.5 Absorption extent for two drug first, followed by the generic drug. In all 20.50 Comparing two drugs. Makers of generic drugs must ght-hand and left. reads chow that they do not differ significantly from the Astep "reference" drugs that they imitate. One aspect in which Arugs might differ is their extent of absorption in the klood. Table 20.5 gives data taken from 20 healthy non- smoking male subjects tor one pair of drugs." This is a matched pairs design. Numbers 1 through 20 were as- signed at random to the subjects. Subjects 1 through 10 20. Subject Thread Th Right drug. Subjects 11 through 20 received the reference drug first, followed by the generic drug. In all cases, a washout period separated…
Choose the best answer. Please show the computation and explain the answer. Which of the following statements is true? I) A and B are independent variables with means of 6 and 8, respectively. Therefore, E(3A - B + 3) = 13. II) A and B are independent variables with variances of 6 and 8, respectively. Therefore, Var(3A - B + 3) = 13. a. I only b. II only c. Both are correct d. Both are false
Q-2 a) A landscape contractor bids on jobs where he can make $3000 profit. The relative frequency of getting 1, 2, 3, 4, 5,6,7,8 or 9 jobs per month are shown. Number of jobs Frequency 1 2 3 4 5 6 7 8 9 56 78 95 98 23 65 78 90 23 Find the contractor's expected profit per month. Also find out the deviation of the landscape contractor. b) The American Automobile Association reports that the average time it takes to respond to an emergency call is 38 minutes. Assume the variable is approximately normally distributed and the standard deviation is 9.002 minutes. If 80 calls are randomly selected, approximately how many will be responded to in less than 15 minutes? How many will be responded to in 50 percent? How many will be 100 percent?