Q1/ The below frequency table shows the compressive strength values for tested concrete cubes. Construct a histogram Compressive strength (N/mm²) 25-27 Number of cubes 1 6. 28-30 31-33 10 34-36 8 37-39 4 40-42 1
Q1/ The below frequency table shows the compressive strength values for tested concrete cubes. Construct a histogram Compressive strength (N/mm²) 25-27 Number of cubes 1 6. 28-30 31-33 10 34-36 8 37-39 4 40-42 1
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![Q1/ The below frequency table shows the compressive strength values for tested
concrete cubes. Construct a histogram
Compressive strength (N/mm2)
25-27
Number of cubes
1
28-30
31-33
10
34-36
8
37-39
4
40-42
1
Q2/ The number of hours worked by 10 employees of small building firm during a
week were:
45
46 34 47
44
42
46
42
43
44
Calculate the mean, median and standard deviation of the hours worked by the
employees
Q3/ The following data represent the lifetimes of light bulbs (in months), frequency
distribution was obtained; Find the mean, variance and standard deviation.
Class limits
frequency
10-20
21-31
10
32-42
3
43-53
7
54-64
18
65-75
7
Q4/ A- If p (A) =0.4, p(B)
= 0.2 and p (An B) = 0.1 determine the following
properties
P (A'), P (A U B), P (A U B'), P (A/B)
B/ Find Combinations (*)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F00dc544c-f78c-4ee4-9b1b-02c1bca15a48%2Fbf102240-c23d-466e-a3cb-c040a4b1f61c%2Fhmvbsa_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1/ The below frequency table shows the compressive strength values for tested
concrete cubes. Construct a histogram
Compressive strength (N/mm2)
25-27
Number of cubes
1
28-30
31-33
10
34-36
8
37-39
4
40-42
1
Q2/ The number of hours worked by 10 employees of small building firm during a
week were:
45
46 34 47
44
42
46
42
43
44
Calculate the mean, median and standard deviation of the hours worked by the
employees
Q3/ The following data represent the lifetimes of light bulbs (in months), frequency
distribution was obtained; Find the mean, variance and standard deviation.
Class limits
frequency
10-20
21-31
10
32-42
3
43-53
7
54-64
18
65-75
7
Q4/ A- If p (A) =0.4, p(B)
= 0.2 and p (An B) = 0.1 determine the following
properties
P (A'), P (A U B), P (A U B'), P (A/B)
B/ Find Combinations (*)
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