subject
Mathematics, 08.03.2021 19:40 sjoel004

Each fifth-grade student in a school district attends one of three elementary schools: A, B, or School A has 100 fifth-graders, school B has 200 fifth-graders, and school has 300 fifth-graders. A school administrator wants to randomly select 60 fifth-grade students to participate in a new program designed to improve reading comprehension. The administrator will select 10 students from school A, 20 students from school B, and 30 students from school so that each fifth-grade student in the district has the same chance of being selected for the program. (a) is the sample an SRS of all fifth-grade students in the district? Explain.
(b) Explain clearly how you would use your calculator to select a sample of 10 fifth-grade students from school A.
(c) A portion of a random number table is shown below. Beginning at line 140, select the first three fifth graders from school A. Explain your procedures clearly
140 12975 13258 13048 45144 72321 81940 00360 0242
141 96767 35964 23822 96012 94591 65194 50842 53372
142 72829 50232 97892 69408 77919 44575 24970 04178

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 16:10
On new year's day, the average temperature of a city is 5.7 degrees celsius. but for new year's day 2012, the temperature was 9.8 degrees below the average. i) if a represents the average temperature on new year's day and 7 represents the temperature on new year's day 2012, what formula accurately relates the two values together? ii) what was the temperature on new year's day 2012? dt a 0.8 ii) - 4 1 degrees celsius da-t-98 ii) 59 degrees celsius 1) 7 = -9,8 11) 59 degrees celsius ii) l degrees celsius
Answers: 2
question
Mathematics, 21.06.2019 16:20
Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais
Answers: 2
question
Mathematics, 21.06.2019 20:30
What’s 8y+48 and factor each expression completely
Answers: 2
question
Mathematics, 22.06.2019 04:10
Walgreens sells both kleenex and nyquil. in a random sample of 5000 purchases, it was found that 1200 contained kleenex and 540 contained nyquil. these are not independent because sick people are more likely to buy both and healthy people more likely to buy neither. in looking into that, it was found that 360 purchases contained both. a. make a two-way table to display this information. fill in the table with the missing entries, and be sure your table has row and column totals. b. if we randomly select a purchase that contained kleenex, what is the probability it also contained nyquil? c. what percent of all purchases didn’t contain either product?
Answers: 1
You know the right answer?
Each fifth-grade student in a school district attends one of three elementary schools: A, B, or Scho...
Questions
question
Mathematics, 18.07.2019 19:00
Questions on the website: 13722363