Answer:
The 80% confidence interval for the population proportion of disks which are defective is (0.059, 0.079).
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of 
, and a confidence level of 
, we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of 
.
Suppose a sample of 1067 floppy disks is drawn. Of these disks, 74 were defective.
This means that 
80% confidence level
So 
, z is the value of Z that has a pvalue of 
, so 
.
The lower limit of this interval is:
The upper limit of this interval is:
The 80% confidence interval for the population proportion of disks which are defective is (0.059, 0.079).
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➷ Simply multiply 7.25 by 200:
7.25 x 200 = 1450
The actual tower is 1450 feet
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➶ Hope This Helps You!
➶ Good Luck (:
➶ Have A Great Day ^-^
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Answer:
answer is length 32 cm breadth 27 cm
plz refer to picture
Answer:
Step-by-step explanation:
This is an example of a geometric probability distribution because trials are repeated until the first success is gotten. Since each pack has a probability of 0.20 of containing the card Hugo is hoping for, it means that the probability of success, p = 0.2.
Let x represent the number of packs it takes to get the card of his favorite player. The the probability that it takes three or more packs to get the card of his favorite player is expressed as
P(x ≥ 3)
By using the geometric distribution calculator,
P(x ≥ 3) = 0.64
Answer:
The second alternative is correct
Step-by-step explanation:
We are informed that Li’s family is saving money for their summer vacation. Their vacation savings account currently has a balance of $2,764. The family would like to have at least $5,000.
Let x be the amount that Li’s family still needs to save, then;
x + 2764 should be at least 5000. This means that;
