In the dataset "RestRating", the 30 randomly selected patrons give the overall dining experience ratings (Outstanding, Very good
, Good, Average, or Poor) at a restaurant on a Saturday evening
2 answers:
Answer:
The dataset image is attached.
The question has three parts:
a) Find the frequency distribution and relative frequency distribution for these data.
b) Construct a percentage bar chart for these data
c) Construct a percentage pie chart for these data
Explanation:
a)
Frequency distribution tell us how often something occurs.
Frequency distribution
Experience Rating Frequency
OutStanding 14
Very Good 10
Good 5
Average 1
Poor 0
This relative frequency distribution table shows how something are distributed.
Relative Frequency Distribution
Experience Rating Frequency Relative Frequency
OutStanding 14 14/30 = 7/15 = 0.467
Very Good 10 10/30 = 1/3 = 0.333
Good 5 5/30 = 1/6 = 0.167
Average 1 1/30 = 0.033
Poor 0 0
Total 30 1.000
b) Chart image is attached
c) Chart image is attached
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Answer:
Tso = 28.15°C
Explanation:
given data
t2 = 21 mm
ki = 0.026 W/m K
t1 = 9 mm
kp = 180 W/m K
length of the roof is L = 13 m
net solar radiation into the roof = 107 W/m²
temperature of the inner surface Ts,i = -4°C
air temperature is T[infinity] = 29°C
convective heat transfer coefficient h = 47 W/m² K
solution
As when energy on the outer surface at roof of a refrigerated truck that is balance as
Q = .....................1
Q = .....................2
now we compare both equation 1 and 2 and put here value
solve it and we get
Tso = 28.153113
so Tso = 28.15°C
Answer: At time 18.33 seconds it will have moved 500 meters.
Explanation:
Since the acceleration of the car is a linear function of time it can be written as a function of time as
Integrating both sides we get
Now since car starts from rest thus at time t = 0 ; v=0 thus c=0
again integrating with respect to time we get
Now let us assume that car starts from origin thus D=0
thus in the first 15 seconds it covers a distance of
Thus the remaining 125 meters will be covered with a constant speed of
in time equalling
Thus the total time it requires equals 15+3.33 seconds
t=18.33 seconds