1 answer

Problem 1 Twenty-five randomly selected students were asked the number of movies they watched the previous...

Question:

Problem 1 Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results
c. (10%) Construct histogram d. (5%) Complete the columns of the above table e. (10%) Give the first quartile: Q1 = (10%) Giv
B C D A = B= c= D= E= 1. (10%) What percent of the students saw fewer than three movies? 1. (10%) Give the 40 percentile: 40%
Problem 1 Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are given in the table below. # of movies Frequency Relative Frequency Cumulative Relative Frequency Complete the following, entering fractions or decimal values with accuracy to nearest 0.01 a. (10%) Give the sample mean: I = b. (10%) Give the sample standard deviation: $ = c(10%) Construct histogram 0.00 0.00 0.00 0.00 0.00
c. (10%) Construct histogram d. (5%) Complete the columns of the above table e. (10%) Give the first quartile: Q1 = (10%) Give the median: median = 9. (10%) Give the third quartile: 03 = h. (5%) Complete the box-and-whiskers plot below.
B C D A = B= c= D= E= 1. (10%) What percent of the students saw fewer than three movies? 1. (10%) Give the 40 percentile: 40% = k (10%) Give the 90th percentile: 90% =

Answers

Solving first 4 as per HOMEWORKLIB POLICY. Please post rest in a separate question. Thank you.

A. Sample mean would be the total movies watched/25

=0*3+1*4+2*3+3*8+4*7/25

=0+4+6+24+28/25

=62/25

=2.48

B. Standard deviation of a population is given by

- ΗΣΟι – μ)

where mu is mean of the population, N is the number of populatio. Putting values in and calculating, we get

standard deviation=1.36

C. The histogram has been created below

Frequency 3 1 2 3 No of movies watched

D.

The table has been filled below. Explanation follows

No of movies Frequency Relative Frequency Cumulative Relative Frequency
0 3 0.12 0.12
1 4 0.16 0.28
2 3 0.12 0.4
3 8 0.32 0.72
4 7 0.28 1

Relative frequency=frequency of current number/total frequency (which is 25 in our case)

Cumulative Relative Frequency=sum of all relative frequencies till that number.

.

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