Weight Loss (pounds)0 to <55 to <1010 to <1515 to 2020 to <25A sample of 400 people was randomly selected for a research study from a population of people whowanted to lose weight. The 400 people were placed in a diet and exercise program for four weeks. The tableabove summarizes the amount of weight loss for the 400 participants.If all the people in the population were placed in the same diet and exercise program as the 400 people inthe sample, what percent of the population could the researcher infer would lose at least 10 pounds?O 12%O 18%Frequency11614492435O 25%O 35%O 42%

Given frequency distribution table weight loss in pounds(x) frequency(f) 0-5 116 5-10 144…

Answered: Weight Loss (pounds) 0 to <5 5 to <10…

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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Simple random samples of 100 high school students are sampled from each grade level, for a total of 400 high school students. They are asked to rate the performance of the president of the United States on a scale from 1 to 5 (1 = poor and 5 = excellent). The results are presented below. Performance rating Class 3 4 5 Total Freshman 20 26 36 11 7 100 Sophomore 17 23 29 28 3 100 Junior 11 34 22 23 10 100 Senior 22 24 17 25 12 100 Total 70 107 104 87 32 400 Under the appropriate null hypothesis, what is the expected number of sophomores who give a rating of 3?
How old are college students? The national age distribution for collee students are shown below. The western associateion of mountain colleges took a random sample of 212 students and obtained the distribution lited second below. Is the sample age distribution for the western association of mountain colleges a good fit to the national distribution? U a=0.05
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The national distribution of fatal work injuries in a country is shown in the table to the right under National %. You believe that the distribution of fatal work injuries is different in the western part of the country and randomly select 6231 fatal work injuries occuring in that region. At a = 0.05 can you conclude that the distribution of fatal work injuries in the west is different from the national distribution? Complete parts a through d below. Equipment Cause National % 44% Western Frequency Transportation 2895 18% 1160 Assaults Falls Harmful fumes 14% 803 13% 754 9% 532 Fires 2% 87 O B. The distribution of fatal work injuries in the west is the same as the expected distribution. O C. The distribution of fatal work injuries in the west is 44% transportation, 18% equipment, 14% assaults, 13% falls, 9% harmful fumes, and 2% fires. Which hypothesis is the claim? O Ho V H. b. Determine the critical value, Yo. and the rejection region. Y = 11.071 (Round to three decimal places as…
Hypnosis. A sample of 100 people was separated into children and adults. The members of each group were randomly assigned to two different hypnosis exercises. The responses of each person were recorded at the completion of the experiment
From this population data set: (3, 6, 9, 12, 18), how many possible samples with sample size of 3 can be chosen? O a. 3 O b. 5 O c. 10 Od. 15
2 3 4 P 5 D 6 7 8 The data shown here were collected via a phone survey in 2010 of 625 cell phones users of age 12 to 17 by the Pew Research Foundation. If we select a person at random from this sample: type your answer..... Number of text messages sent or received on a typical day 0 1-10 11-20 21-50 type your answer.... 51-100 101+ type your answer... % of teen cell phone users Round your answers to the nearest hundredth, O.XX. a. What is the probability that the person responded that s/he texted more than 100 times per day? c. What is the probability that the person did not respond that she never texts? 2% 22% 11% 18% 18% b. What is the probability that the person responded that s/he texted between 21 and 100 times on a typical day? ?
R A veterinarian recorded how many kittens were born in each litter. This data is summarized in the L histogram below. (Note: The last class actually represents "7 or more kittens," not just 7 kittens.) 14 12 10- 8- 6- 4 1 2 3 4 7 8 # of kittens What is the frequency of litters having at most 3 kittens? ans = Fe Ro 1 FEB 18 P. W MacBook Air 20 000 esc F5 F6 F2 F3 F4 F1 & ! @ 1 2 4 5 Q W R %24 # 3 6 2. Frequency
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Lower Upper f cf rf crf 14 19 10 10 0.2 0.2 20 25 11 21 0.22 0.42 26 31 8 29 0.16 0.58 32 37 6. 35 0.12 0.7 38 43 15 50 0.3 1 The frequency table shown above shows ages from a random sample of 50 people. a. How many people are between 20 and 25 years of age? b. How many people are 25 years old or younger? c. How many people are older than 25? d. What percent of people are 25 years old or younger? Enter a whole number. cor e. What percent of people are between 20 and 25 years of age? Enter a whole number. Submit Question Jump to Answer MacBook Air O00 O00 F4 11 F8 F2 F3 F5 F6 F7 F9 %23 24 & * 3 4. 8. 9- E RI 6
C. Test value D. Make a decision
The number of winter vacation days during one year taken by 159 randomly selected employees were recorded. The data is summarized in the table below. Number of Winter Vacation Days Frequency Cumulative Frequency 0 – 9 43 10 – 19 41 20 – 29 21 30 – 39 37 40 – 49 17

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