Answer:
The table representing the number of students by which mode of transport they travel is given as:
Walk or bike Bus Car Row Total
Below age 15 87 60 18 165
Age 15 and above 65 50 80 195
Column Total 152 110 98 360
We know that a relative frequency of an event is the ratio of frequency to the total number of trials.
i..e we divide each frequencies by 360 to obtain a two-way relative frequency.
Hence,the table is given as:
Walk or bike Bus Car Row Total
Below age 15 0.24 0.17 0.05 0.46
Age 15 and above 0.18 0.14 0.22 0.54
Column Total 0.42 0.31 0.27 1
31 units
the outer part,try to combines pieces that would make one unit and count
Answer:
Step-by-step explanation:
Answer: 
Step-by-step explanation:
The confidence interval estimate for the population proportion is given by :-
, where 
is the sample proportion of success and ME is the margin of error.
Given : The proportion of computers that were repaired more than three times in the last two years : 
Margin of error : 
Now, the confidence interval estimate for the population mean will be :-
Hence, the 98% confidence interval estimate for the population mean using the Student's t-distribution =
