4) A firm would like to estimate the mean age of all people in the civilian labor force. What size sample would be required to estimate the mean age of all people in the civilian labor force accurate to within 0.75 year of the estimate at the 95% confidence level, given that o = 15.26 years?

Q: A company wants to estimate the mean number of hours per week adults use computers at home. What is…

A:

Q: 10 A local health care facility would like to estimate the proportion of patients referred to them…

A: 10. Given information, the margin of error is 0.15. Confidence level is 99%. Significance level is…

Q: What sample size is needed if a researcher needed to calculate the true proportion of individuals…

A: HERE , MOE  = 0.01 confidence level = 95% here z-critical for 95% confidence level = 1.96 here use…

Q: In a study of government financial ald for college students, it becomes necessary to estimate the…

A: Note: Please repost 2nd question as i can answer only 1 question as per my policy.   Given data,…

Q: What is the smallest sample size that guarantees that the margin of error is less than 6 when…

A:

Q: 4) A firm would like to estimate the mean age of all people in the civilian labor force. What size…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: In a study of government financial aid for college students, it becomes necessary to estimate the…

A:

Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 6. How many…

A: Given information- Population standard deviation, σ = 1.5 Confidence interval = 0.99 Significance…

Q: Suppose that the sample mean is & 31.11, that it is known that o= 34.510, and that the sample size n…

A: Since, you have asked multiple question, we will solve the first question for you. If you want any…

Q: The Greater Pittsburgh Area Chamber of Commerce wants to estimate the mean time workers who are…

A:

Q: Determine the margin of error for the confidence interval for the mean: 65<u<92 The margin of error…

A:

Q: Find the minimum sample size needed to estimate the percentage of managers who have a cat. Use a…

A: Given For 99.8% CI is 2.8782 P=0.5 Margin of error=0.06

Q: 7. Find the sample size, n, needed to estimate the percentage of adults who have consulted fortune…

A: Given, Margin of error=0.09 Confidence level=98% p^=0.15

Q: A charitable organization wishes to estimate, to within one percentage point, the proportion of all…

A: Given e=Margin of error=1%=0.01  Level of significance ɑ=0.02  p^0.=population proportion=25%=0.25…

Q: You wish to determine what percentage of pre-kindergarten children ages 3 to 5 whose mother had a…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.90.

Q: Based on a sample of approximately 600 nonsmokers and 200 smokers, estimate the true difference…

A:

Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 5. How many…

A: From the provided information, Population standard deviation (σ) = 1.25 Confidence level = 99%…

Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

A:

Q: Assume that all grade-point averages are to be standardized on a scale between 0 and 4. How many…

A:

Q: assume that a sample is used to estimate a population proportion p. find the margin of error that…

A: Givensample size(n)=325x=54.2p^=xn=54.2325=0.1668confidence level = 95%

Q: 7) The state education commission wants to estimate the proportion of tenth grade students that have…

A:

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A: Find z-critical value:…

Q: Suppose you are planning to construct a 23% confidence interval for a one sample population…

A: We have given that confidence level (c) = 23% = 0.23

Q: If we were to ask for a minimum sample size for a 94% level of confidence what would the value for…

A: Confidence Level = 0.94

Q: Find the margin of error that corresponds to a sample of size 210 with 70% successes at a confidence…

A: Sample size is 210. Percentage of successes is 70%. Percentage of confidence level is 90%.

Q: Assume that all​ grade-point averages are to be standardized on a scale between 0 and 5. How many​…

A: Given information- Population standard deviation, σ = 1.25 Confidence interval = 0.98 Significance…

Q: Construct a 95% confidence interval of the population proportion using the given information.

A: The sample proportion is, p^=xn=240300=0.8 From the table of critical values, the critical value for…

Q: Determine the margin of error for an 80% confidence interval to estimate the population mean with…

A: Given that  Confidence level (C) = 80%  Population standard deviation (σ) = 48   We know that…

Q: Assume the managers have requested estimates of the mean attitudes towards each mall with a margin…

A: M.E= 0.05 Springdale Mean -3.81 Springdale STDEV - 1.06 West Mall Mean - 3.41 West Mall STDEV - 1.18…

Q: 2) Use the given data to find the minimum sample size required to estimate the population…

A:

Q: If you knew that I study reported that 67% of pre-kindergarten children ages 3 to 5 whose mother had…

A:

Q: In a study of government financial aid for college​ students, it becomes necessary to estimate the…

A:

Q: At what confidence level will an estimate with margin of error + 1.4758 be for a sample size n2 30?

A: The following is the formula for Confidence interval when sample size n is large (i.e., n ≥ 30)…

Q: 3. A government agency wishes to estimate the proportion of drivers aged 16–24 who have been…

A: Here is given that, margin of error is 1% = 0.01 Proportion is 0.12 We will use z-proportion to…

Q: What is the smallest sample size needed to guarantee that the results of a study conducted to find…

A: Solution: a. From the given information, confidence level is 0.95, p=0.21 and E=0.03.

Q: An HR administrator wishes to know the proportion of employees that are currently using a very…

A: It is given that margin of error (E) is 0.14 and the confidence level is 0.80.

Q: use the given data to find the minimum sample size required to estimate a population proportion or…

A:

Q: 9. What sample size is needed to give a margin of error of 2.5% with a 95% confidence level?

A:

Q: 13. What is the minimum sample size needed to estimate a population mean within 1 inch at the 98%…

A: 13) Given Information: Confidence level = 98% = 0.98 Margin of error E=1 inch Population standard…

Q: 2. What should the sample size be for an interval around the mean, with precision +0.1, to have…

A: Given data ; Margin of error = 0.1 Confidence level = 95% To calculate the required sample size.

Q: 1. A decision maker is interested in estimating a population proportion. A sample of size n = 150…

A: Given data,n=150x=115p=xn=115150=0.77z-value at 90% confidence is Zc=1.645

Q: (a) The minimum sample size required to construct a 90% confidence interval is students. (Round up…

A: a) The given Data : Required margin of error = 1.31.3  Population standard deviation σ\sigma =…

Q: A transportation planner wishes to estimate the proportion of commuters who drive to work within…

A: The provided information are: Margin of error (E) = 0.05 Confidence level = 90%

Q: 4) A firm would like to estimate the mean age of all people in the civilian labor force. What siz…

A: Given,margin of error (E)=0.75standard deviation(σ)=15.26α=1-0.95=0.05α2=0.025Z0.025 =1.96

Q: Assume that a sample is used to estimate a population proportion p. Find the 99.5% confidence…

A: Solution: From the given information, p=0.85, n=201 and the confidence level is 0.995.

Q: a. If we want to estimate the population mean travel-to-work time for San Francisco resi- dents with…

A:

Q: What is the smallest sample size that guarantees that the margin of error is less than 3% when…

A:

Q: 1. Construct a 90% confidence interval for the proportion of employees requiring size 3.

A: here given  A civil engineering firm issues every new employee with a safety helmet. Four different…

Q: A firm would like to estimate the mean age of all people in the civilian labor force. What size…

A:

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.