Question
In: Statistics and Probability
A sample of 125 is drawn from a population with a proportion equal to 0.45. a....
A sample of 125 is drawn from a population with a proportion equal to 0.45.
a. Determine the probability of observing between 50 and 54 successes.
b. Determine the probability of observing between 55 and 62 successes.
c. Determine the probability of observing between 53 and 70 successes.
Solutions
Expert Solution
Given :
A sample of 125 is drawn from a population with a proportion equal to 0.45
Binomial distribution
n = 125 & p = 0.45
= n×p = 125 × 0.45 = 56.25
= √np(1-p) = √56.25(1-0.45) = 5.5621
orchestra answered 1 year agoRelated Solutions
A sample of 125 is drawn from a population with a proportion equal to 0.44 a....
A sample of 125 is drawn from a population with a proportion
equal to 0.44
a. Determine the probability of observing between 50 and 54
successes.
b. Determine the probability of observing between 55 and 62
successes.
c. Determine the probability of observing between 53 and 70
successes.
A) A sample of 150 is drawn from a population with a proportion equal to 0.40....
A) A sample of 150 is drawn from a population with a proportion
equal to 0.40. Determine the probability of observing between 49
and 54 successes.
P(Observing between 49 and 54 successes)equals=
B) A professional baseball pitcher takes 15.83 seconds to throw
each pitch, on average. Assume the pitcher's times per pitch
follow the normal probability distribution with a standard
deviation of 2.2 seconds. Complete parts a through d.
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If a random sample of 125 items is taken from a population in which the proportion...
If a random sample of 125 items is taken from a population in
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Given that the population proportion is 0.6, a sample of size 1200 is drawn from the...
Given that the population proportion is 0.6, a sample of size
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13.If a random sample of 125 items is taken from a population in which the proportion...
13.If a random sample of 125 items is taken from a population in
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59.
(Round to three decimal places as
needed.)
A sample selected from a population gave a sample proportion equal to 0.61 . Round your...
A sample selected from a population gave a sample proportion
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Round your answers to three decimal places.
a. Make a 98 % confidence interval for p assuming
n = 75 .
( Enter your answer; confidence interval assuming n=75, lower bound
,Enter your answer; confidence interval assuming n=75, upper
bound )
b. Construct a 98 % confidence interval for p
assuming n = 625 .
( Enter your answer; confidence interval assuming n=625, lower
bound ,Enter your...
Construct a 95% confidence interval to estimate the population proportion with a sample proportion equal to...
Construct a 95% confidence interval to estimate the population
proportion with a sample proportion equal to
0.45 and a sample size equal to 120.
----- A 95% confidence interval estimates that the population
proportion is between a lower limit of
___ and an upper limit of ___
????
Construct a 99% confidence interval to estimate the population proportion with a sample proportion equal to...
Construct a 99% confidence interval to estimate the population
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Construct a 99% confidence interval to estimate the population proportion with a sample proportion equal to...
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of nothing. (Round to three decimal places as needed.)
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