Question
In: Statistics and Probability
Say the fraction of students at college 1 who took statistics is given by 1/4. Say...
Say the fraction of students at college 1 who took statistics is given by 1/4. Say the fraction of students at college 2 who took statistics is given by 3/5. You survey 10 people from each college (so 20 people in total).
(a) What is the probability that more than half of the students surveyed from college 1 took statistics?
(b) What is the probability that more than half of the students surveyed from college 2 took statistics?
(c) Assuming that the colleges are independent, what is the probability that more than half of the students surveyed from college 1 took statistics and more than half of the students surveyed from college 2 took statistics?
(d) Assuming that the colleges are independent, what is the probability that more than half of the students surveyed from college 1 took statistics, or more than half of the students surveyed from college 2 took statistics?
Solutions
orchestra answered 2 years agoRelated Solutions
Say the fraction of students at college 1 who took statistics is given by 1/5. Say...
Say the fraction of students at college 1 who took statistics is
given by 1/5. Say the fraction of students at college 2 who took
statistics is given by 1/2. You survey 10 people from each college
(so 20 people in total).
(a) What is the probability that more than half of the surveyed
students took statistics from college 1?
(b) What is the probability that more than half of the surveyed
students took statistics from college 2?
(c) Assuming...
Salaries of 32 college graduates who took a statistics course in college have a mean of...
Salaries of 32 college graduates who took a statistics course in
college have a mean of $64,300. Assume a standard deviation of
$16,200, construct a 95% confidence interval for estimating the
population mean.
$ __ < u < $ __ (round to nearest integer as needed).
Salaries of 33 college graduates who took a statistics course in college have a mean, x...
Salaries of 33 college graduates who took a statistics course in
college have a mean, x overbar x, of $67,700. Assuming a
standard deviation, sigma σ, of $10,608, construct a 95%
confidence interval for estimating the population mean μ.
Salaries of 42 college graduates who took a statistics course in college have a mean, x...
Salaries of 42 college graduates who took a statistics course in
college have a mean, x overbar, of $ 68,500. Assuming a standard
deviation, σ, of $13,898, construct a 99% confidence interval
for estimating the population mean μ.
$___< μ < $ ___
(Round to the nearest integer as needed.)
Salaries of 38 college graduates who took a statistics course in college have a? mean, x...
Salaries of 38 college graduates who took a statistics course in
college have a? mean, x overbar ?, of $ 61 comma 500 . Assuming a
standard? deviation, sigma ?, of ?$11 comma 382 ?, construct a 90
?% confidence interval for estimating the population mean mu.
(Round to the nearest integer as? needed.)
Salaries of 38 college graduates who took a statistics course in college have a mean, x,...
Salaries of 38 college graduates who took a statistics course in
college have a mean, x, of $66,100. Assuming a standard deviation,
o, of $15,100, construct a 95% confidence interval for estimating
the population mean u
$___<u<$___
Salaries of 4949 college graduates who took a statistics course in college have a mean, x̄,...
Salaries of 4949 college graduates who took a statistics course
in college have a mean,
x̄, of $62,800. Assuming a standard deviation, σ, 11,139
construct a 99% confidence interval for estimating the population
mean μ
Salaries of 42 college graduates who took a statistics course in college have a mean, x...
Salaries of
42
college graduates who took a statistics course in college have
a mean,
x overbarx,
of
$ 63 comma 63,300.
Assuming a standard deviation,
sigmaσ,
of
15,697,
construct a
95%
confidence interval for estimating the population mean
muμ.
Salaries of 35 college graduates who took a statistics course in college have a mean, x...
Salaries of 35 college graduates who took a statistics course in
college have a mean, x overbar, of $ 64 comma 500. Assuming a
standard deviation, sigma, of $10 comma 141, construct a 99%
confidence interval for estimating the population mean mu.
Salaries of 44 college graduates who took a statistics course in college have a mean, x...
Salaries of 44 college graduates who took a statistics course in
college have a mean, x overbar, of $67,600. Assuming a standard
deviation, sigma, of $19,598, construct a 90% confidence
interval for estimating the population mean
$___< u<$_____
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