Mathematics, 02.12.2019 19:00 destinyhammons12345

# According to the national institute on drug abuse, a u. s. government agency, 17.3% of 8th graders in 2010 had used marijuana at some point in their lives. a school official hopes to show the percentage is lower in his district, testing h0: p = 0.173 versus ha: p < 0.173. the health department for the district uses anonymous random sampling and finds that 10% of 80 eighth graders surveyed had used marijuana. is the sample size condition for conducting a hypothesis test for a population proportion satisfied?

a. no, because () is less than 10. because of this the sample size is too small to use the normal distribution to model the distribution of sample proportions.

b. yes, because the sample is random. it represents the 8th graders in the district.

c. yes, because () and (80)(1 β 0.173) are both at least 10. this means we can use the normal distribution to model the distribution of sample proportions.

d. no, because 80 students is not enough to be representative of the students in the school district.

Answers: 2

Mathematics, 04.02.2019 18:08

Its due ! 1. what is the product of 1 and 5x^2-2x + 62 write your answer in standard form 2 4 (a) show your work. (b) ls the product of - and 5x^2 -2x+ equal to the product of 1 -1 and 5x^2-2x -57 explain your answer

Answers: 3

Mathematics, 04.02.2019 09:04

The us gdp (gross domestic product) for 2014 was a reported 17.555 trillion dollars. the current us population is about 320 million people. round all answers to the nearest hundredth.

Answers: 1

Mathematics, 03.02.2019 21:23

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Answers: 2

Mathematics, 03.02.2019 19:38

Xavier rides his bikes 5 1/4 miles or about 82% of his goal of the day. what is his goal of the day?

Answers: 3

According to the national institute on drug abuse, a u. s. government agency, 17.3% of 8th graders i...

Biology, 13.06.2018 21:18

History, 13.06.2018 21:17

History, 13.06.2018 21:17

Chemistry, 13.06.2018 21:16

History, 13.06.2018 21:15

English, 13.06.2018 21:15

Social Studies, 13.06.2018 21:14

History, 13.06.2018 21:12

History, 13.06.2018 21:12

History, 13.06.2018 21:11

Geography, 13.06.2018 21:11