Homework Answers
a) as we know that 95% confidence interval =estimated mean -/+ margin of error
=78 -/+ 5 =73 to 83
b)
as for 99% confidence interval critical value for z/t distribution will be higher to compensate for higher confidence therefore margin of error will be higher then 5 as margin of error =z*std error
Add Answer to:
6.12 Margin of error and the confidence interval. A study of stress on the campus of...
Determine the margin of error for a 95% confidence interval to estimate the population mean when...
Determine the margin of error for a 95% confidence
interval to estimate the population mean when s=37 for the sample
sizes below.
Solve for c) n=46.
htmathe Student Homework Theme =41778etod y FALL 2019 STAT 3309 CRN 120961 Homework: Section 8.3 Confidence intervals with s Homework Score: 0 57 of 1 pt 28.3.22-T Determine the margin of error for a 95% confidence interval to estimate the E a) n. 13 b) n = 30 c) n46 a) The margin of...
Which of the following would produce a confidence interval with a larger margin of error than...
Which of the following would produce a confidence interval with a larger margin of error than the 95% confidence interval with a sample size of 50? A. using a sample size of 100 and fix the confidence level. B. using a confidence level of 90% and fix the sample size. C. using a confidence level of 99% and fix the sample size. D. using a sample size of 500 and fix the confidence level. E. None of the above.
Determine the margin of error for a confidence interval to estimate the population mean with n=25...
Determine the margin of error for a confidence interval to estimate the population mean with n=25 and s =1.6 for the confidence levels below. a) 80% b) 90% c) 99% a) The margin of error for an 80% confidence interval is. (Round to two decimal places as needed.) b) The margin of error for a 90% confidence interval is. (Round to two decimal places as needed.) c) The margin of error for a 99% confidence interval is. (Round to two...
113 The margin of error for the 95% confidence interval of the mean fill is. 2...
113 The margin of error for the 95% confidence interval of the mean fill is. 2 A 0.48 3 B 0.41 4 C 0.36 5 D 0.32 714 As a class project, each of 280 students taking E270 is required to obtain a sample of n = 100 students and build a B 95% confidence interval for the distance travelled to the campus. The instructor thus receives 280 different interval e estimates. The instructor would expect_ ofthese intervals to capture...
What sample size is needed to obtain a 95% confidence interval whose margin of error is...
What sample size is needed to obtain a 95% confidence interval whose margin of error is no more than 1.7 for the mean of a normal population with standard deviation 4.5?
comprete: chapter iu rroblem set Attempts: Do No Harm: 9 8. Confidence intervals for estimating the...
comprete: chapter iu rroblem set Attempts: Do No Harm: 9 8. Confidence intervals for estimating the difference in population means Aa Aa E Elissa Epel, a professor of health psychology at the University of California-San Francisco, studied women in high- and low-stress situations. She found that women with higher cortisol responses to stress ate significantly more sweet food and consumed more calories on the stress day compared with those with low cortisol responses, and compared with themselves on lower stress...
Which statement is NOT true about confidence intervals? A) A confidence interval is an interval...
Which statement is NOT true about confidence intervals? A) A confidence interval is an interval of values computed from sample data that is likely to include the true population value B) An approximate formula for a 95% confidence interval is sample estimate ± margin of error. C) A confidence interval between 20% and 40% means that the population proportion lies between 20% and 40% D) A 99% confidence interval procedure has a higher probability of producing...
Determine the margin of error for a confidence interval to estimate the population mean with nequals22...
Determine the margin of error for a confidence interval to estimate the population mean with nequals22 and s = 11.6 for the confidence levels below. a) 80% b) 90% c) 99% a) The margin of error for an 80% confidence interval is nothing.
Recall the formula for a proportion confidence interval is p^?zp^(1?p^)n?????????<p<p^+zp^(1?p^)n????????? Thus, the margin of error is...
Recall the formula for a proportion confidence interval is p^?zp^(1?p^)n?????????<p<p^+zp^(1?p^)n????????? Thus, the margin of error is E=zp^(1?p^)n????????? . NOTE: the margin of error can be recovered after constructing a confidence interval on the calculator using algebra (that is, subtracting p^ from the right endpoint.) In a simple random sample of size 59, taken from a population, 20 of the individuals met a specified criteria. a) What is the margin of error for a 90% confidence interval for p, the population...
To calculate a confidence interval, the margin of error (E) must first be calculated. The Margin...
To calculate a confidence interval, the margin of error (E) must first be calculated. The Margin of Error, E, for means is: E = 1.96*s/sqrt(n), where s is the sample standard deviation, n is the sample size. The “sqrt” stands for square root. The Margin of Error, E, for proportions is: E = 1.96*sqrt[p*(1-p)/n], where s is the sample standard deviation, n is the sample size, and p is the proportion. Use the Confidence Interval formula above, and the correct...
Determine the margin of error for a 95% confidence
interval to estimate the population mean when s=37 for the sample
sizes below.
Solve for c) n=46.
htmathe Student Homework Theme =41778etod y FALL 2019 STAT 3309 CRN 120961 Homework: Section 8.3 Confidence intervals with s Homework Score: 0 57 of 1 pt 28.3.22-T Determine the margin of error for a 95% confidence interval to estimate the E a) n. 13 b) n = 30 c) n46 a) The margin of...
113 The margin of error for the 95% confidence interval of the mean fill is. 2 A 0.48 3 B 0.41 4 C 0.36 5 D 0.32 714 As a class project, each of 280 students taking E270 is required to obtain a sample of n = 100 students and build a B 95% confidence interval for the distance travelled to the campus. The instructor thus receives 280 different interval e estimates. The instructor would expect_ ofthese intervals to capture...
What sample size is needed to obtain a 95% confidence interval whose margin of error is no more than 1.7 for the mean of a normal population with standard deviation 4.5?
comprete: chapter iu rroblem set Attempts: Do No Harm: 9 8. Confidence intervals for estimating the difference in population means Aa Aa E Elissa Epel, a professor of health psychology at the University of California-San Francisco, studied women in high- and low-stress situations. She found that women with higher cortisol responses to stress ate significantly more sweet food and consumed more calories on the stress day compared with those with low cortisol responses, and compared with themselves on lower stress...
Most questions answered within 3 hours.
-
A 0.0510 M solution of an organic acid has an
[H+] of 7.50×10-4M .
What is...
asked 1 minute ago -
The completed Lewis structure of CO2 contains a total
of 0,1,2,3,4,5,6,7,8 covalent bonds
and 0,1,2,3,4,5,6,7,8 lone pairs.
NOTE:...
asked 4 minutes ago -
what is the profit-maximizing output condition that a
monopolistically competitive firm must satisfy? a) price charged...
asked 5 minutes ago -
Consider the set of ordered pairs shown below. Assuming that the
regression equation is y=3.513+0.429x and...
asked 27 minutes ago -
1. (A) Write two
structural (constitutional)
isomers of C4H8F2?
Please show all of
the
asked 29 minutes ago -
Objective: Practice converting a Boolean logic
expression into it’s truth table and to show the implementation...
asked 26 minutes ago -
1) Name the three holes located in the greater wing of the
sphenoid bone in order...
asked 30 minutes ago -
For the following reaction set-up, which type of hydrocarbon
product would form? 1,4-hexadiene + two Cl2...
asked 32 minutes ago -
Consider the following method that is intended to determine if
the double values d1 and d2...
asked 44 minutes ago -
could someone please post clear drawings of the three structures
in the equilibrium mixture of D-glucose...
asked 51 minutes ago -
Using the Properties of Order show that 5n5 +
4n4 + 6n3 + 2n2+ n +...
asked 55 minutes ago -
What is experiential learning and how is it helpful for teaching
leadership, and interpreting group dynamics?...
asked 54 minutes ago