Mathematics, 02.06.2021 18:20 Bryoh

THIS IS FOR A FINAL PLS RESPOND I HAVE MINIMUM TIME. A simple random sample of 150 San Antonio area policemen found that the average time these police officers had worked for the police department was 16
years with a standard deviation of 5 years. Ten years ago the average amount of time policemen stayed on the job was 15 years. The city wants to find out if this data shows evidence that the average has increased.

What would be the best type of significance test for this situation?

Determine and Write a null and alternative hypothesis that can be used for the city’s research.

Answers: 3

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 18:20

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.

Answers: 2

Answer

Mathematics, 21.06.2019 20:00

Which of these tools or constructions is used to inscribe a hexagon inside a circle?

Answers: 1

Answer

Mathematics, 21.06.2019 21:50

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality

Answers: 3

Answer

Mathematics, 22.06.2019 02:30

Which verbal expression best describes the algebraic expression 3x ÷ 5? the quotient of three times some number and five the product of some number and five divided by three the quotient of three and some number times five the sum of three and some number divided by five

Answers: 1

Answer

You know the right answer?

THIS IS FOR A FINAL PLS RESPOND I HAVE MINIMUM TIME. A simple random sample of 150 San Antonio area...

Questions