Answer:

Step-by-step explanation:


* You must make sure that you have seven zeros in your decimal.
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Answer: 24≤ a < 26
Step-by-step explanation:
The modal class interval is the class interval with the highest frequency, the highest frequency from the table is 8 , which belongs to the class interval 24≤ a < 26
a)
because it is equal to the area of the shaded region between X=4 and X=6, and the probability that X falls within some interval is given by the area under the PDF.
b)
because the shaded region is a rectangle of height 1/5 (by virtue of X following a uniform distribution over the interval [2, 7], which has length 5).
Ralphs is 7.5x+10
frank’s is 10x