Question

A survey of 2301 adults in a certain large country aged 18 and older conducted by a reputable polling organization found that 406 have donated blood in the past two years.

construct and interpret 90% confidence interval for the population proportion of adults in the country who have donated blood in the past two years.

There is a 90% chance the proportion of adults in the country aged 18 and older who have donated blood in the past two years is between ? And ?

Answer #1

Values are given as,

n= 2301

x= 406

= (x/n) = (406/2301) = 0.1764

Z-critical value of 90% = 1.645

**Calculating 90% confidence interval:**

0.0079

CI= 0.1633 , 0.1895

**The 90% confidence interval:** **(0.1633 ,
0.1895)**

**Interpretation :** There is a 90% chance the
proportion of adults in the country aged 18 and older who have
donated blood in the past two years is between
**0.1633** and **0.1895 .**

a survey of 2280 adults in a certain large country aged 18 and
older conducted by a reputable polling organization found that 409
have donated blood in the past two years.
construct and interpret a 90% confidence interval for the
population proportion of adults in the country who have donated
blood in the past two years.

A survey of 2282 adults in a certain large country aged 18 and
older conducted by a reputable polling organization found that 416
have donated blood in the past two years.
Obtain a point estimate for the population proportion of adults
in the country aged 18 and older who have donated blood in the past
two years. (Round to three decimal places as needed.)
Construct and interpret a 90% confidence interval for the
population proportion of adults in the country...

A survey of 2325 adults in a certain large country aged 18 and
older conducted by a reputable polling organization found that 423
have donated blood in the past two years.
construct and interpret a 90% confidence interval for the
population of adults in the country that have donated blood in the
past 2 years.
p=0.182

A survey of 2322 adults in a certain large country aged 18 and
older conducted by a reputable polling organization found that 418
have donated blood in the past two years. Complete parts (a)
through (c) below.
a) Obtain a point estimate for the population proportion of
adults in the country aged 18 and older who have donated blood in
the past two years.
(b) Verify that the requirements for constructing a confidence
interval about p are satisfied.
(c) Construct...

a survey of 2290 adults in a certain large country
aged 18 and older conducted by a reputable polling organization
found that 404 have donated blood in the past 2 years. complete
parts a through c.
a.) obtain a point estimate for the population proportion of adults
in the country aged 18 and older who have donated blood in the past
2 years.
b.) verify that the requirements for constructing a confidence
interveal about p are satisfied.
the sample____ a...

A survey of 2315 adults in a certain large country aged 18 and
older conducted by a reputable polling organization found that 416
have donated blood in the past two years. Complete parts (a)and (b)
below. Click here to view the standard normal distribution table
(page 1). LOADING... Click here to view the standard normal
distribution table (page 2). LOADING... (a) Obtain a point estimate
for the population proportion of adults in the country aged 18 and
older who have...

A survey of 2276 adults in a certain large country aged 18 and
older conducted by a reputable polling organization found that 409
have donated blood in the past two years. Complete parts (a)
through (c) below.
a) Obtain a point estimate for the population proportion of
adults in the country aged 18 and older who have donated blood in
the past two years. Modifying Above p with caret equals __ (Round
to three decimal places as needed.)
(b) Verify...

A Gallup survey of 2322 adults (at least 18 years old) in the
U.S. found that 408 of them have donated blood in the past two
years. Construct a 90% confidence interval for the population
proportion of adults in the U.S. who have donated blood in the past
two years. Round your answer to three decimal places.

A reputable polling organization in a certain country surveyed
106,600 adults, and 18% of those polled reported that they
smoked. Complete parts a and b below.
a) Calculate the margin of error for the proportion of all
adults who smoke with 90% confidence.
ME=________
(Round to four decimal places as needed.)

An organization surveyed 1040 adults in a certain country aged
18 and older and found that 538 believed they would not have enough
money to live comfortably in retirement. Does the sample evidence
suggest that a majority of adults in this country believe they will
not have enough money in? retirement? Use the alpha equals 0.1
level of significance.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 11 minutes ago

asked 31 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago