Question

The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. In an earlier study, the population proportion was estimated to be 0.180.18.

How large a sample would be required in order to estimate the fraction of tenth graders reading at or below the eighth grade level at the 90%90% confidence level with an error of at most 0.020.02? Round your answer up to the next integer.

Answer #1

Solution,

Given that,

= 0.18

1 - = 1 - 0.18 = 0.82

margin of error = E = 0.02

At 90% confidence level

= 1 - 90%

= 1 - 0.90 =0.10

/2
= 0.05

Z/2
= Z0.05 = 1.645

sample size = n = (Z / 2 / E )2 * * (1 - )

= (1.645 / 0.02 )2 * 0.18 * 0.82

= 998.52

sample size = n = 999

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.17.
How large a sample would be required in order to estimate the
fraction of tenth graders reading at or below the eighth grade
level at the 90% confidence level with an error of at most 0.02?
Round your answer up to the next integer.

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.17.
How large a sample would be required in order to estimate the
fraction of tenth graders reading at or below the eighth grade
level at the 95% confidence level with an error of at most 0.02?
Round your answer up to the next integer.

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.16. How large a sample would be required in
order to estimate the fraction of tenth graders reading at or below
the eighth grade level at the 98% confidence level with an error of
at most 0.03? Round your answer up to the next integer.

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.21 . How large a sample would be required in
order to estimate the fraction of tenth graders reading at or below
the eighth grade level at the 99% confidence level with an error of
at most 0.02? Round your answer up to the next...

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.18. How large a sample would be required in
order to estimate the fraction of tenth graders reading at or below
the eighth grade level at the 98% confidence level with an error of
at most 0.02? Round your answer up to the next integer.

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.23. How large a sample would be required in
order to estimate the fraction of tenth graders reading at or below
the eighth grade level at the 99% confidence level with an error of
at most 0.03? Round your answer up to the next integer.

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.220.22.
How large a sample would be required in order to estimate the
fraction of tenth graders reading at or below the eighth grade
level at the 85%85% confidence level with an error of at most
0.030.03? Round your answer up to the next integer.

he state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. In an earlier study, the population proportion
was estimated to be 0.18 0.18 . How large a sample would be
required in order to estimate the fraction of tenth graders reading
at or below the eighth grade level at the 98% 98% confidence level
with an error of at most 0.02 0.02 ? Round your answer...

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level.
Step 1 of 2: Suppose a sample of 955 tenth graders is drawn. Of
the students sampled, 812 read above the eighth grade level. Using
the data, estimate the proportion of tenth graders reading at or
below the eighth grade level. Enter your answer as a fraction or a
decimal number rounded to three decimal places...

The state education commission wants to estimate the fraction of
tenth grade students that have reading skills at or below the
eighth grade level. Suppose a sample of 292 tenth graders is drawn.
Of students sampled, 240 read at or below the eighth grade level.
Using the data, construct the 80% confidence interval for the
population proportion of tenth graders reading at or below the
eighth grade level. Round your answer to three decimal places.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 1 minute ago

asked 1 minute ago

asked 3 minutes ago

asked 19 minutes ago

asked 21 minutes ago

asked 21 minutes ago

asked 43 minutes ago

asked 43 minutes ago

asked 46 minutes ago

asked 46 minutes ago

asked 49 minutes ago

asked 49 minutes ago