Question
In: Math
A random sample of 20 observations results in 11 successes. [You may find it useful to...
A random sample of 20 observations results in 11 successes.
[You may find it useful to reference the z
table.]
a. Construct the an 90% confidence interval for
the population proportion of successes. (Round intermediate
calculations to at least 4 decimal places. Round "z" value
and final answers to 3 decimal places.)
|
Construct the an 90% confidence interval for the population proportion of failures. (Round intermediate calculations to at least 4 decimal places. Round "z" value and final answers to 3 decimal places.)
|
Solutions
milcah answered 4 months agoRelated Solutions
A random sample of 130 observations results in 78 successes. [You may find it useful to...
A random sample of 130 observations results in 78 successes.
[You may find it useful to reference the z table.]
a. Construct the an 95% confidence interval for the population
proportion of successes. (Round intermediate calculations to at
least 4 decimal places. Round "z" value and final answers to 3
decimal places.)
b. Construct the an 95% confidence interval for the population
proportion of failures. (Round intermediate calculations to at
least 4 decimal places. Round "z" value and final answers...
A random sample of 100 observations results in 70 successes. [You may find it useful to...
A random sample of 100 observations results in 70 successes.
[You may find it useful to reference the z
table.]
a. Construct the a 95% confidence interval for the
population proportion of successes. (Round intermediate
calculations to at least 4 decimal places. Round "z" value
and final answers to 3 decimal
places.)
Confidence interval to
b. Construct the a 95% confidence interval for
the population proportion of failures. (Round intermediate
calculations to at least 4 decimal places. Round "z" value...
A random sample of 120 observations results in 90 successes. [You may find it useful to...
A random sample of 120 observations results in 90 successes.
[You may find it useful to reference the z
table.]
a. Construct the 90% confidence interval for the
population proportion of successes. (Round intermediate
calculations to at least 4 decimal places. Round "z" value
and final answers to 3 decimal
places.)
Confidence interval _____ to _____
b. Construct the 90% confidence interval for
the population proportion of failures. (Round intermediate
calculations to at least 4 decimal places. Round "z" value...
A sample of 120 results in 30 successes. [You may find it useful to reference the...
A sample of 120 results in 30 successes. [You may find
it useful to reference the z table.]
a. Calculate the point estimate for the population
proportion of successes. (Do not round intermediate
calculations. Round your answer to 3 decimal
places.)
b. Construct 95% and 90% confidence intervals
for the population proportion. (Round intermediate
calculations to at least 4 decimal places. Round "z" value
and final answers to 3 decimal places.)
confidence intervals 95%
Confidence intervals 90%
c. Can we...
A sample of 115 results in 46 successes. [You may find it useful to reference the...
A sample of 115 results in 46 successes. [You may find
it useful to reference the z table.]
a. Calculate the point estimate for the population
proportion of successes. (Do not round intermediate
calculations. Round your answer to 3 decimal
places.)
Point estimate
b. Construct 90% and 99% confidence intervals
for the population proportion. (Round intermediate
calculations to at least 4 decimal places. Round "z" value
and final answers to 3 decimal places.)
Confidence Level
Confidence Interval
90%
to
99%...
Consider the following regression results based on 20 observations. [You may find it useful to reference...
Consider the following regression results based on 20
observations. [You may find it useful to reference the t
table.]
Coefficients
Standard Error
t Stat
p-value
Intercept
30.8201
4.6053
6.692
0.000
x1
0.3302
0.1804
1.830
0.084
a-1. Choose the hypotheses to determine if the
intercept differs from zero.
H0: β0 ≥ 0;
HA: β0 < 0
H0: β0 ≤ 0;
HA: β0 > 0
H0: β0 = 0;
HA: β0 ≠ 0
a-2. At the 5% significance level, what is the...
Consider the following regression results based on 20 observations. [You may find it useful to reference...
Consider the following regression results based on 20
observations. [You may find it useful to reference the t
table.]
Coefficients
Standard Error
t Stat
p-value
Intercept
31.4333
4.5131
6.965
0.000
x1
0.1987
0.1470
1.352
0.193
a-1. Choose the hypotheses to determine if the
intercept differs from zero.
H0: β0 ≤ 0;
HA: β0 > 0
H0: β0 ≥ 0;
HA: β0 < 0
H0: β0 = 0;
HA: β0 ≠ 0
a-2. At the 5% significance level, what is the...
A random sample of 140 observations results in 119 successes. a. Construct the a 95% confidence...
A random sample of 140 observations results in 119
successes.
a. Construct the a 95% confidence interval for the
population proportion of successes. (Round intermediate
calculations to at least 4 decimal places. Round "z" value
and final answers to 3 decimal places.)
b. Construct the a 95% confidence interval for
the population proportion of failures. (Round intermediate
calculations to at least 4 decimal places. Round "z" value
and final answers to 3 decimal places.)
Seventy-one successes were observed in a random sample of n = 120 observations from a binomial...
Seventy-one successes were observed in a random sample of
n = 120
observations from a binomial population. You wish to show
that
p > 0.5.
State the null and alternative hypothesis.
H0: p ≠ 0.5 versus
Ha: p = 0.5H0:
p < 0.5 versus Ha: p >
0.5 H0: p
= 0.5 versus Ha: p ≠
0.5H0: p = 0.5 versus
Ha: p > 0.5H0:
p = 0.5 versus Ha: p <
0.5
Calculate the appropriate test statistic. (Round your answer...
A random sample of 20 binomial trials resulted in 8 successes. Test the claim that the...
A random sample of 20 binomial trials resulted in 8 successes.
Test the claim that the population proportion of successes does not
equal 0.50. Use a level of significance of 0.05.
(c) Compute p̂.
Compute the corresponding standardized sample test statistic.
(Round your answer to two decimal places.)
(d) Find the P-value of the test statistic. (Round your
answer to four decimal places.)
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