Determine whether this statement is true or false. if two lines have the same slope, their equations describe the same line.
1 answer:
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Answer:
There are 23.1% probability of flights getting delayed.
Step-by-step explanation:
Given:
Number of samples of flights selected = 1000
Number of flights arrived on time = 769
We need to find the probability of flight being delayed.
Solution:
Now we will first find the number of flights which are delayed.
number of flights which are delayed can be calculated by subtracting Number of flights arrived on time from Number of samples of flights selected.
framing in equation form we get;
number of flights which are delayed =
Now we will find the probability of flight being delayed.
probability of flight being delayed can be calculated by dividing number of flights which are delayed from the Number of samples of flights selected and then multiply by 100.
framing in equation form we get;
probability of flight being delayed =
Hence There are 23.1% probability of flights getting delayed.
Answer:
c) 62.
Step-by-step explanation:
Let x represent number of customers came in on the fifth day.
We have been given that the mean number of customers for those four days is 52. So total number of customers on 4 days would be 4 times 52 that is 208 customers.
We know that mean of a data set is equal to sum of all data points divided by number of data points.
Total number of customers on 5 days would be and total number of days is 5.
Since we need a mean of 54, so we can set mean of 5 days equal to 54 as:
Multiply both sides by 5:
Therefore, 62 customers must come in on the fifth day to make the five-day mean 54 and option 'c' is the correct choice.