Hi, can I please get help with the following problem: The following 10 numbers r

Question

Hi, can I please get help with the following problem:

The following 10 numbers represent the population in hundred of 10villages in South-West England.
     20    10     25    25     25    30     30    31     32     75

a. What is the largest village in terms of the population?

b. How many village population lies between 20 and 30, find thepercentage.

c. What are the mean and standard deviation for the population of10 villages?

d. Assuming that the populations are normally distributed,
     i. What is the percentage of populationbetween 20 and 30?
    ii. Find the 90th percentile from the 10numbers.

Explanation / Answer

Sorted the data as follows. 10 20 25 25 25 30 30 31 32 75 (a) The largest village in terms of the population is 75. (b) 6/10=0.6 (c)mean=30.3     standard deviation=17.01

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