Question
In: Statistics and Probability
For these problems, carry at least four digits after the decimal in your calculations. Answers may...
For these problems, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding.
In a random sample of 63 professional actors, it was found that 39 were extroverts.
(a) Let p represent the proportion of all actors who are extroverts. Find a point estimate for p. (Round your answer to four decimal places.)
.6190
(b) Find a 95% confidence interval for p. (Round your answers to two decimal places.)
Lower Limit:
Upper Limit:
In a random sample of 538 judges, it was found that 279 were introverts.
(a) Let p represent the proportion of all judges who
are introverts. Find a point estimate for p. (Round your
answer to four decimal places.)
.5186
(b) Find a 99% confidence interval for p. (Round
your answers to two decimal places.)
Lower Limit:
Upper Limit:
A random sample of 5320 permanent dwellings on an entire reservation showed that 1683 were traditional hogans.
(a) Let p be the proportion of all permanent dwellings on the entire reservation that are traditional hogans. Find a point estimate for p. (Round your answer to four decimal places.)
.3164
(b) Find a 99% confidence interval for p. (Round your answer to three decimal places.)
Lower Limit:
Upper Limit:
Solutions
orchestra answered 1 year agoRelated Solutions
For these problems, carry at least four digits after the decimal in your calculations. Answers may...
For these problems, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
Santa Fe black-on-white is a type of pottery commonly found at
archaeological excavations at a certain monument. At one excavation
site a sample of 608 potsherds was found, of which 354 were
identified as Santa Fe black-on-white.
(a) Let p represent the proportion of Santa Fe
black-on-white potsherds at the excavation site. Find a point
estimate for p. (Round...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a random sample of 66 professional actors, it was found that 43
were extroverts.
(a) Let p represent the proportion of all actors who
are extroverts. Find a point estimate for p. (Round your
answer to four decimal places.)
(b) Find a 95% confidence interval for p. (Round your
answers to two decimal places.)
lower limit
upper limit ...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
A random sample of 5967 physicians in Colorado showed that 3224
provided at least some charity care (i.e., treated poor people at
no cost).
(a) Let p represent the proportion of all Colorado
physicians who provide some charity care. Find a point estimate for
p. (Round your answer to four decimal places.)
(b) Find a 99% confidence interval for...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to rounding. In
a random sample of 66 professional actors, it was found that 41
were extroverts.
(a) Let p represent the proportion of all actors who are
extroverts. Find a point estimate for p. (Round your answer to four
decimal places.)
(b) Find a 95% confidence interval for p. (Round your answers to
two decimal places.)
lower limit
upper limit...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to rounding.
How hard is it to reach a businessperson by phone? Let p be the
proportion of calls to businesspeople for which the caller reaches
the person being called on the first try.
(a) If you have no preliminary estimate for p, how many business
phone calls should you include in a random sample to be 80% sure
that the...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a combined study of northern pike, cutthroat trout, rainbow
trout, and lake trout, it was found that 20 out of 860 fish died
when caught and released using barbless hooks on flies or lures.
All hooks were removed from the fish.
(a) Let p represent the proportion of all pike and
trout that die (i.e., p is the...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
A random sample of 5913 physicians in Colorado showed that 3035
provided at least some charity care (i.e., treated poor people at
no cost).
(a) Let p represent the proportion of all Colorado
physicians who provide some charity care. Find a point estimate for
p. (Round your answer to four decimal places.)
(b) Find a 99% confidence interval for...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
Santa Fe black-on-white is a type of pottery commonly found at
archaeological excavations at a certain monument. At one excavation
site a sample of 586 potsherds was found, of which 358 were
identified as Santa Fe black-on-white.
(a) Let p represent the proportion of Santa Fe
black-on-white potsherds at the excavation site. Find a point
estimate for p. (Round...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to
rounding.
In a random sample of 502 judges, it was found that 287 were
introverts.
(a) Let p represent the proportion of all judges who
are introverts. Find a point estimate for p. (Round your
answer to four decimal places.)
(b) Find a 99% confidence interval for p. (Round your
answers to two decimal places.)
lower limit
upper limit
For...
For this problem, carry at least four digits after the decimal in your calculations. Answers may...
For this problem, carry at least four digits after the decimal
in your calculations. Answers may vary slightly due to rounding.
Case studies showed that out of 10,596 convicts who escaped from
certain prisons, only 7911 were recaptured.
(a) Let p represent the proportion of all escaped convicts who
will eventually be recaptured. Find a point estimate for p. (Round
your answer to four decimal places.)
(b) Find a 99% confidence interval for p. (Round your answers to
three decimal...
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