7.3-4Use the included equation. 7.3-3. Let p the of who suf-n2confidence int(c) Use Equation 73-4 to find an appconfidence interval for p.(d) Use 73-5 to find an 90%(d) Use Equation 73-5 to find an approximate 90%confidence interval for p.won(e) Find a one-sided approximate 90% confidenceinterval for p that provides a lower bound for p.7.3-estto7.3-3. Let p equal the proportion of triathletes who suf-fered a training-related overuse injury during the pastyear. Out of 330 randomly selected triathletes, 167 indi-cated that they had suffered such an injury during the past)year.(a) Use these data to give a point estimate of p.(b) Use these data to find an approximate 90% confidenceinterval for p.7.3-4. Let p equal the proportion of Americans who favorthe death penalty. If a random sample of nAmericans yielded ypenalty, find an approximate 95% confidence intervalfor p.1234864 who favored the death%3D7.3-5. Public health officials in a large city decided thatif compelling evidence could be presented that less than90% of children under six years of age in the city hadreceived the DPT vaccine, then they would carry out anexpensive immunization program throughout the city. Arandom sample was taken of 537 children under six yearsof age in the city; of these, 460 had been immunized forDPT. Obtain a two-sided approximate 95% confidence

Name: 7.3-4Use the included equation. 7.3-3. Let p the of who suf-n2confiden
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Description: 7.3-4Use the included equation. 7.3-3. Let p the of who suf-n2confidence int(c) Use Equation 73-4 to find an appconfidence interval for p.(d) Use 73-5 to find an 90%(d) Use Equation 73-5 to find an approximate 90%confidence interval for p.won(e) Find

For 95% confidence interval α=1-CI=1-0.95=0.05zα2=z0.052=z0.025=1.96Given sample size=n=1234y=number of persons who favored death penalty=864So the proportion=p^=yn=8641234So the 95% confidence interval is:p^-zα2p^(1-p^)n , p^-zα2p^(1-p^)n=8641234-1.9686412341-86412341234 , 8641234+1.9686412341-86412341234=(0.674597353104 , 0.725726796005)Answer: (0.674597353104 , 0.725726796005)

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(b) Use these data to find an approxin interval for p. 7.3-4. Let p equal the proportion of Americans who favor the death penalty. If a random sample of n Americans yielded y penalty, find an approximate 95% confidence interval for p. 1234 %3D 864 who favored the death %3D thot

(b) Use these data to find an approxin interval for p. 7.3-4. Let p equal the proportion of Americans who favor the death penalty. If a random sample of n Americans yielded y penalty, find an approximate 95% confidence interval for p. 1234 %3D 864 who favored the death %3D thot

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Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.

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7.3-4

Use the included equation.

7.3-3. Let p the of who suf-
n2
confidence int
(c) Use Equation 73-4 to find an app
confidence interval for p.
(d) Use 73-5 to find an 90%
(d) Use Equation 73-5 to find an approximate 90%
confidence interval for p.
won
(e) Find a one-sided approximate 90% confidence
interval for p that provides a lower bound for p.
7.3-
est
to
7.3-3. Let p equal the proportion of triathletes who suf-
fered a training-related overuse injury during the past
year. Out of 330 randomly selected triathletes, 167 indi-
cated that they had suffered such an injury during the past
)
year.
(a) Use these data to give a point estimate of p.
(b) Use these data to find an approximate 90% confidence
interval for p.
7.3-4. Let p equal the proportion of Americans who favor
the death penalty. If a random sample of n
Americans yielded y
penalty, find an approximate 95% confidence interval
for p.
1234
864 who favored the death
%3D
7.3-5. Public health officials in a large city decided that
if compelling evidence could be presented that less than
90% of children under six years of age in the city had
received the DPT vaccine, then they would carry out an
expensive immunization program throughout the city. A
random sample was taken of 537 children under six years
of age in the city; of these, 460 had been immunized for
DPT. Obtain a two-sided approximate 95% confidence

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