Answer to Question #154387 in Statistics and Probability for Danelle Sammy

Question

a) we write the null hypothesis (if necessary)

b) solution

c) result

d) answer (together with a comparison to the theoretical distribution, if needed)

(3 p.) Calculate the sum of the given series of numbers, arithmetic mean and average deviation, variance, standard deviation and coefficient of variation and make historgam:

1, 2, 3, 4, 5, 5.1, 5.2, 5.4, 5.6, 5.7, 5.9, 6.1, 6.4, 6.7, 7.5, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 99

(1 p.) The population density in two 100,000-people cities is 700 people / km2 and 200 people / km2, respectively. Calculate the average population density

(2 p.) Check if the exam pass rate depends on sex

pass Not pass  

W 21 5  

M 47 20  

(3 p.) Does the speed of the runner depend on the color of the shirt?

black            white Green  

4.8

4.9

4.0

4.6

5.1

5.3 4.4

4.3

4.4

4.2

4.0

4.0 3.9

5.1

4.9

4.8

4.7

4.6  

(2 p.) Check if the exam pass rate depends on the time you are studying

Time in days 1 2 3 4 5 6 7 8 9  

grade        2 2 3 3.5 4 4 5 5 5  

(2 p.) Two development companies have purchased land for housing. Already after the purchase, a questionary was conducted regarding the most fashionable areas in the city. Based on this information, check if any of these companies have better land for housing.

A  1

B  2

C  3

D  4 

E  5

F  6

G  7

H  8

I  9

J  10

companie 1: A, B, C, D, I

kompanie 2: E, F, G, H, J

Answer 1

Dear Danelle Sammy, your question requires a lot of work, which neither of our experts is ready to perform for free. We advise you to convert it to a fully qualified order and we will try to help you. Please click the link below to proceed: Submit order