If the manager of a bottled water distributor wants to estimate, with 95% confidence, the mean amount of water in a 1-gallon bottle to within ±0.003 gallons and also assumes that the standard deviation is 0.04 gallons, what sample size is needed? n = (Round up to the nearest integer.)

Q: The head circumferences of women are normally distributed with a mean of 32 cm and a standard…

A: We have given that.   X~N( μ , ?^2 )   μ =32 , ? =9   , n= 16   Z-score =( x - μ )/?   Note…

Q: An advertising executive wants to estimate the mean weekly amount of time consumers spend watching…

A: Given information- Population standard deviation, σ = 24 minutes Error = ±6 We have to find the…

Q: For a sample of 12 items from a normally dis￾tributed population for which the standard deviation is…

A: Provided information is ;  sample size(n) =  12 items  population standard deviation(σ ) =  17.0,…

Q: For a sample of n=16 scores, what is the value of the population standard deviation (σ) necessary to…

A: From the provided information, Sample size (n) = 16 Standard error (SE) = 8 points

Q: How large a sample would be necessary to estimate the true population mean in a large population…

A:

Q: Suppose the mean​ per-person check for brunch at a restaurant chain is approximately ​$13.75.…

A: The formula for the sample size needed to estimate a population mean is

Q: that the researchers wanted estimate the mean reaction to withi Using the sample standar preliminary…

A: Given that  Margin of error =E =5 Sample standard deviation =65

Q: A research worker wants to determine the average time it takes a mechanic to rotate the tires of a…

A: The sample size required for a (1 − α)-level confidence interval for μ with aspecified margin of…

Q: If specifications for a research project require the standard error of the corresponding…

A: From the provided information, Standard error (SE) = 5 Population standard deviation (σ) = 45

Q: A research article claims that the mean cost of raising a child from birth to age 2 in a rural area…

A: Given : population mean is $10460

Q: If the manager of a bottled water distributor wants to​ estimate, with 95​% confidence, the mean…

A: Given : Margin of error, ME = 0.006 population standard deviation, σ = 0.05…

Q: 2. Given a standard deviation of 3.7, what is the mean if1 0% of the population has a distribution…

A: We have given that,  Let x be the random variable from normal distribution with standard deviation…

Q: certain city, a researcher wishes to determine whether the average income of the residents is…

A: Given

Q: If the manager of a bottled water distributor wants to​ estimate, with 90​% confidence, the mean…

A: According to the provided information,

Q: Given a standard error of 5.2 with a sample size of 9. Then the standard deviation is

A: Solution: 4. From the given information, a standard error is 5.2 and n=9.

Q: If the manager of a bottled water distributor wants to estimate, with 95% confidence, the mean…

A:

Q: 1. In a sample of 100 cars with a standard deviation of 25km/h speed. Find the margin of error if…

A: NOTE: As mentioned above and also as per the guidelines, we are supposed to solve the first question…

Q: Given a sample mean of 94.3, a sample standard deviation of 8.4 and a sample size of 6, test the…

A:

Q: GIVEN: POPULATION MEAN: 94.60 AND POPULATION STANDARD DEVIATION: 2.3324 What is the percentage that…

A:

Q: 4. A researcher claims that the standard deviation of the numberof deaths annually from typhoons in…

A:

Q: If the manager of a bottled water distributor wants to​ estimate, with 99​% ​confidence, the mean…

A:

Q: Is a randomly selected school's mean ACT score of 20 (N = 10) really that different than the…

A: Introduction - z-score  z=x-μσwhere , μ=mean σ=standard deviation

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n= 64,then the population…

A:

Q: If the population standard deviation is σ=10, how large a sample is necessary to have a standard…

A: σ=10   The standard error is given by SE = σn n = (σSE)2

Q: The average cost of tuition plus room and board for a small private liberal arts college is reported…

A: It is given that the population standard deviation is $1,200 and sample mean is $8,757 and sample…

Q: Suppose the mean​ per-person check for brunch at a restaurant chain is approximately ​$11.75.…

A: Given, Mean, μ = 11.75 Standard deviation, σ = 3 Margin of error, E = 0.75 At 95% confidence level…

Q: 7. For a population with a standard deviation of σ = 20, how large a sample is necessary to have a…

A: Standard deviation: Standard deviation is defined as the positive square root of Variance. It is…

Q: A manufacturer wishes to estimate the reliability (in months) of a certain product. An estimate of…

A:

Q: If the standard error of the mean is σx̅ = 3 and the sample size is n = 64, then the population…

A:

Q: The Orange County Supervisor claims that full-time salaried employees in her county have a mean…

A: Given:

Q: The​ quality-control manager at a compact fluorescent light bulb​ (CFL) factory needs to determine…

A:

Q: To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19…

A:

Q: Given that the population standard deviation equals 273 and the sample size consists of 741…

A: Given information- Population standard deviation, σ = 273 Sample size, n = 741 We have to find the…

Q: For a particular process that is in good statistical control, the mean standard deviation value,…

A:

Q: if a population has a mean  of 75 and a standard deviation of 15    (a) what is the mean of the…

A: Given,sample size(n)=25mean(μ)=75standard deviation(σ)=15

Q: An industrial company claims that the mean pH level of the water in a nearby river is6.8. You…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: For a population with a mean of 45 and a standard deviation of 10, what is the standard error of the…

A: Obtain the value of standard error for the sample of size n=4 scores.   The value of standard…

Q: For a population with a means of 72 and a standard deviation of 10 what is the standard error of the…

A: We have given that  Mean=72 Standard deviation=10 Sample size=25 Find the standard error

Q: The daily demand for six-packs of Coke at Mr. D’sfollows a normal distribution, with a mean of 120…

A: Given: Let X be the number of six packs ordered daily. Given: X is normally distributed. Mean of X =…

Q: The following sample data are from a normal population:    Sample size (n) = 25, Sample mean=14,…

A: Given Information: Sample size (n) = 25 Sample mean (x ) = 14 Sample standard deviation (s) = 3.6…

Q: Consider the time it takes, in minutes, for police officers to respond to a 911 call, where a…

A:

Q: Test the claim that for the adult population of one town, the mean salary is $28,000. If a sample of…

A: Given information- Sample size, n = 25 Sample mean, x-bar = $23,500 Sample standard deviation (s) =…

Q: A researcher wishes to see if the average number of sick days a worker takes per year is greater…

A: From provided information, claim that the average number of sick days a worker takes per year is…

Q: A researcher wishes to see if the average number of sick days a worker takes per year is greater…

A: Hypotheses:Let µ be the true average number of sick days a worker takes per year. The aim of the…

Q: 1. It is claimed that the average weight of a bag of biscuits is 250 grams with a standard deviation…

A: Given  μ=250, σ=20.5, n=50, x̄=240, ɑ=0.05 We want to test the hypothesis.

Q: In order to set rates, an insurance company is trying to estimate the number of sick days that full…

A: 53. The provided information is  The  population standard deviation is  σ=2.8 days α=0.05 The…

Q: 1.) It is claimed that the average performance of newly graduated nurses from the recent board exam…

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

Q: Suppose that a simple random sample is taken from a normal population having a standard deviation of…

A: Given, n=64 σ=5.5α=0.05MOE=Zα/2*σn