8.50284 × 10-2 standared form
1 answer:
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Answer:
The degrees of freedom for this problem are 21
Step-by-step explanation:
Degrees of freedom:
When testing an hypothesis involving two samples, the number of degrees of freedom is given by:
In which is the size of the first sample and
is the sample of the second sample.
In this question:
Samples of 9 and 14, so
The degrees of freedom for this problem are
The degrees of freedom for this problem are 21
Answer:
45m/hr
Step-by-step explanation:
Divide 270 by 6 to determine the unit rate.
Therefore, the unit rate is 45 miles per 1 hour.
Answer:
Step-by-step explanation:
the probability that x iPads are defective in the sample follows a hypergeometric distribution, so it is calculated as:
Where
Because we have a N elements with k elements that are defective and we are going to take a sample of n elements. So, replacing N by 100, k by 7 and n by 3, we get:
Now, the probability of rejecting the shipment is the probability that at least one iPad of the sample is defective, so:
Then:
Finally, the probability of rejecting the shipment is: