Question 193909This question is from textbook understanding basic statistics
: Sam is a representative who sells large appliances such as refrigerators, stoves, and so forth.Let x= number of appliances sam sells on a given day.Let F =frequency (number of days) with which he sells X appliances for a random sample of 240 days, Sam had the following sales record.
x|0|1|2|3|4|5|6|7
f|9|72|63|41|28|14|8|5
assume the sales record is representative of the population of all sales day.
A) use the relative frequency to find P(x) for x=0 to 7.
B)compute the probability that x is between 2 and 5 (including 2 and 5)
This question is from textbook understanding basic statistics
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Sam had the following sales record.
x|0|1|2|3|4|5|6|7
f|9|72|63|41|28|14|8|5
assume the sales record is representative of the population of all sales day.
A) use the relative frequency to find P(x) for x=0 to 7.
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1st: Add the frequencies to get a total of 240
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2nd: Divide each frequency by 240 to find the percentage of each frequency.
e.g. Corresponding to f=9 you have the following:
9/240 = 0.0375
72/240 = 0.30
etc.
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B)compute the probability that x is between 2 and 5 (including 2 and 5)
Find the percentage corresponding to x = for 2,3,4,5 and add them to get the probability.
I get: 0.60833333
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Cheers,
Stan H.
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