Mathematics

Mathematics, 22.07.2019 17:00, andrewblack033

In an interval estimation for a proportion of a population, the value of z at 99.2% confidence is

answer

Answers: 1

Show answers

Similar questions

Предмет

Mathematics, 22.06.2019 04:30, RichardKing2376

Arandom sample of 15 observations is used to estimate the population mean. the sample mean and the standard deviation are calculated as 172 and 63, respectively. assume that the population is normally distributed. a. with 99 confidence, what is the margin of error for the estimation of the population mean? b. construct the 99% confidence interval for the population mean. c. construct the 95% confidence interval for the population mean. d. construct the 83% confidence interval for the population mean. hint: you need to use excel function =t.inv.2t to find the value of t for the interval calculation.

Answers: 1

Предмет

Mathematics, 08.07.2019 17:10, Ameilasmickle15

Amagazine provided results from a poll of 500 adults who were asked to identify their favorite pie. among the 500 respondents, 12% chose chocolate pie, and the margin of error was given as plus or minus5 percentage points. given specific sample data, which confidence interval is wider: the 90% confidence interval or the 80% confidence interval? why is it wider? choose the correct answer below. a. a 90% confidence interval must be wider than an 80% confidence interval because it contains 90% of the true population parameters, while the 80% confidence interval only contains 80% of the true population parameters. b. an 80% confidence interval must be wider than a 90% confidence interval in order to be more confident that it captures the true value of the population proportion. c. a 90% confidence interval must be wider than an 80% confidence interval in order to be more confident that it captures the true value of the population proportion. d. an 80% confidence interval must be wider than a 90% confidence interval because it contains 100%minus80%equals20% of the true population parameters, while the 90% confidence interval only contains 100%minus90%equals10% of the true population parameters.

Answers: 3

Предмет

Mathematics, 13.07.2019 20:20, muanghoih14

Select the most appropriate answer. when a higher confidence level is used to estimate a proportion and all other factors involved are held constant there is not enough information to determine the effect on the confidence interval. the confidence interval will be less likely to contain the parameter being estimated. the confidence interval will be narrower. the confidence interval will not be affected. the confidence interval will be wider. provide an appropriate response. in a recent study of 42 eighth graders the mean number of hours per week that they watched television was 19.6 with a standard deviation of 5.8 hours. find the 98% confidence interval for the population mean (19.1, 20.4) (18.3, 20.9) (14.1, 23.2) (17.5, 21.7) provide an appropriate response a 95% confidence interval for a population mean has a margin of error of 3.9. if the sample mean is 54.6 obtain the 95% confidence interval from 50.7 to 54.6 from 46.8 to 62.4 from 50.7 to 58.5 from 52.64 to 56.56 from 46.96 to 62.24

Answers: 2

Предмет

Mathematics, 30.10.2019 06:31, hma9153

A95% confidence interval for a population proportion was constructed using a sample proportion from a random sample. which of the following statements are correct? select all that apply. if we were to use a 90% confidence level, the confidence interval from the same data would produce an interval wider than the 95% confidence interval. the sample proportion must lie in the 95% confidence interval. there is a 95% chance that the 95% confidence interval actually contains the population proportion. we don't know if the 95% confidence interval actually does or doesn't contain the population proportion. the population proportion must lie in the 95% confidence interval.

Answers: 2

Do you know the correct answer?

In an interval estimation for a proportion of a population, the value of z at 99.2% confidence is...

Questions in other subjects:

Konu

History, 23.08.2019 20:10

What reason did wilson give in his 1914 address to support his position...

Konu

Mathematics, 23.08.2019 20:10

Which of the following statements are true? (i) a nonhomogeneous system of 7 equations in 6 unknowns always has a unique solu tion (ii) if a and b are row equivalent then their ro...

Konu

Engineering, 23.08.2019 20:10

Draw sketches and explain what anisotropic, monoclinic, orthotropic, transversely isotropic and isotropic materials are....

Konu

Engineering, 23.08.2019 20:10

What is the effect of increasing rake angle on the type of chips produced, and why?...

Konu

Geography, 23.08.2019 20:10

Paleoclimate studies require that scientists find a climate a material that has retained a unique signature of the ancient climate conditions. models air bubbles...

Konu

Mathematics, 23.08.2019 20:10

2a. let a=1 and b-l find all values of a, b, c and d for which the matrices a and b commute? b. find all values of c for which the following matrix is invertible l1 1...

Konu

Mathematics, 23.08.2019 20:10

A) a fair die has six sides labeled 1 through 6. what is the sample space (s) if the die is thrown once? b) list the possible outeomes for the following events) a = the event that...

Konu

Physics, 23.08.2019 20:10

An iron bolt of mass 57.5 g hangs from a string 38.8 cm long. the top end the right from the previously vertical line f the string is fixed. without touching it, a magnet attracts...

Konu

Physics, 23.08.2019 20:10

An electric motor has an effective resistance of 22 22 and an inductive reactance of 72 12 when working under load. the voltage amplitude across the alternating source is 420v. cal...

Konu

Physics, 23.08.2019 20:10

A3 cm tall object is 45 cm in front of a convex mirror that has a -25 cm focal length. what is the image characteristics? real / virtual upright / inverted smaller / larger / same...

Other tasks in the category: Mathematics More task