Question

In a recent poll, 600 people were asked if they liked soccer,
and 10% said they did. Based on this, construct a 90% confidence
interval for the true population proportion of people who like
soccer.

As in the reading, in your calculations:

--Use z = 1.645 for a 90% confidence interval

--Use z = 2 for a 95% confidence interval

--Use z = 2.576 for a 99% confidence interval.

Give your answers as decimals, to 4 decimal places.

[________, ________]

Answer #1

Solution :

Given that,

Point estimate = sample proportion = = 0.10

1 - = 1 - 0.10 = 0.90

Z/2 = Z0.05 = 1.645

Margin of error = E = Z / 2 * (( * (1 - )) / n)

= 1.645 (((0.10 * 0.90) / 600)

= 0.0201

A 90% confidence interval for population proportion p is ,

± E

= 0.10 ± 0.0201

= ( 0.0799, 0.1201 )

In a recent poll, 300 people were asked if they liked soccer,
and 37% said they did. Based on this, construct a 90% confidence
interval for the true population proportion of people who like
soccer.
As in the reading, in your calculations:
--Use z = 1.645 for a 90% confidence interval
--Use z = 2 for a 95% confidence interval
--Use z = 2.576 for a 99% confidence interval.
Give your answers as decimals, to 4 decimal places.
[,]

In a recent poll, 500 people were asked if they liked baseball,
and 57% said they did. Find the margin of error of this poll, at
the 95% confidence level. As in the reading, in your calculations:
--Use z = 1.645 for a 90% confidence interval --Use z = 2 for a 95%
confidence interval --Use z = 2.576 for a 99% confidence interval.
Give your answer rounded to three decimal places.

In a recent poll, 250 people were asked if they liked dogs, and
17% said they did. Find the margin of error of this poll, at the
99% confidence level. Give your answer to three decimals

In a recent poll, 480 people were asked if they liked dogs, and
56% said they did. Find the margin of error of this poll, at the
95% confidence level.
Give your answer to three decimals

In a recent poll, 560 people were asked if they liked dogs, and
7% said they did. Find the margin of error of this poll, at the 90%
confidence level.
Give your answer to three decimals

In a recent poll, 430 people were asked if they liked dogs, and
92% said they did. Find the margin of error of this poll, at the
90% confidence level. Give your answer to three decimals

In a recent poll, 150 people were asked if they liked dogs, and
57% said they did. Find the Margin of Error for this poll, at the
99% confidence level. Give your answer to three decimal places if
possible.

In a recent poll, 390 people were asked if they liked dogs,
and 76% said they did. Find the Margin of Error for this poll, at
the 95% confidence level. Give your answer to four decimal places
if possible.

In a recent poll, 560 people were asked if they liked dogs, and
66% said they did. Find the margin of error of this poll, at the
99% confidence level.

In a recent poll, 240 people were asked if they liked dogs, and
33% said they did. Find the margin of error of this poll, at the
95% confidence level.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 35 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago