Benny bought nine new baseball trading cards to add to his collection. The next day his dog ate half of his collection. There ar
2 answers:
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Answer: 0.9104
Step-by-step explanation:
Given : A hardware store receives a shipment of bolts that are supposed to be 12 cm long.
Mean :
Standard deviation :
Sample size : n=10
Since, they will declare the shipment defective and return it to the manufacturer if the average length of the 100 bolts is less than 11.97 cm or greater than 12.04 cm.
So for the shipment to be satisfactory, the length of the bolts must be between 11.97 cm and 12.04 cm.
We assume that the length of the bolts are normally distributed.
Let X be the random variable that represents the length of randomly picked bolt .
For Z score :
For x = 11.97
For x = 12.04
By using the standard normal distribution table , the probability that the shipment is found satisfactory will be :-
Hence, the probability that the shipment is found satisfactory=0.9104
Answer:
This is the same as and it is also equivalent to
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Explanation:
n is some placeholder for a number
one fourth of that number is which is the same as
or
since 1/4 = 0.25
From here, we subtract off 2 to get as one possible final answer.