Mathematics

Mathematics, 12.09.2019 23:20, rowdycar313p0ao5k

Two students determine the percentage of lead in a sample as a laboratory exercise. the true percentage is 22.52%. the students' results for three determinations are as follows: 1. 22.52, 22.48, 22.542. 22.64, 22.58, 22.62precision can be judged by examining the average of the deviations from the average value for that data set. calculate the average value of the absolute deviations of each measurement from the average for the first set. calculate the average value of the absolute deviations of each measurement from the average for the second set.

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Mathematics, 23.06.2019 10:00, alcantar28eduin

Northlake high school has two lunch periods. students can eat their lunch in the cafeteria or on an outside patio. about 42% of students who have first lunch eat outside. compare this with the percentage of second-lunch students who eat outside. first lunch second lunch total eat outside 0.19 0.21 0.40 eat inside 0.26 0.34 0.60 total 0.45 0.55 10 | select the true statement. o a. a greater percentage of second-lunch students (45%) eat outside. o b. a smaller percentage of second-lunch students (21%) eat outside. o c. a greater percentage of second-lunch students (55%) eat outside. o d. a smaller percentage of second-lunch students (38%) eat outside.

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Mathematics, 24.06.2019 11:20, sergiog6833

Northlake high school has two lunch periods. students can eat their lunch in the cafeteria or on an outside patio. about 31% of students who have first lunch eat outside. compare this with the percentage of second-lunch students who eat outside. eat outside 0.17 first lunch second lunch total eat inside 0.38 0.24 0.62 total 0.55 0.45 0.21 0.38 select the true statement. o a. a smaller percentage of second-lunch students (24%) eat outside. o b. a greater percentage of second-lunch students (47%) eat outside. o c. a greater percentage of second-lunch students (45%) eat outside. o d. a smaller percentage of second-lunch students (21%) eat outside.

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Mathematics, 26.07.2019 10:00, paulesparsa6

Question 2: evelyn goes to a middle school that includes grades 6, 7, and 8. she wants to estimate the percentage of students in the school who ride the bus to school. she selects a random sample of 200 students to survey who are attending an after-school activity. she determines that 38% of the students at the activity ride the bus to school. which statement about evelyn's sample is true? a. the sample is the percentage of students who ride the bus. b. the sample might not be representative of the population because it only includes students who are attending an after-school activity. c. the sample shows that exactly 38% of the students in the school ride the bus.

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Mathematics, 03.08.2019 20:30, reksos123

Ithink its b evelyn goes to a middle school that includes grades 6, 7, and 8. she wants to estimate the percentage of students in the school who ride the bus to school. she selects a random sample of 200 students to survey who are attending an after-school activity. she determines that 38% of the students at the activity ride the bus to school. which statement about evelyn's sample is true? a. the sample is the percentage of students who ride the bus. b. the sample might not be representative of the population because it only includes students who are attending an after-school activity. c. the sample shows that exactly 38% of the students in the school ride the bus

Answers: 1

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