Using the same data from the Part 1, compute the point estimate (sampF standard deviation, and answer the following: a. Estimate the Parameters using a 90% confidence level. -What is the Margin of Error? = 11.4954 -What is the Lower Limit? = 68.3899 -What is the Upper Limit? = 91.3807 -What is the Interval Estimate? 79.8853,11.4954| b. Estimate the Parameters using a 95% confidence level. -What is the Margin of Error? = 15.8071 %3D -What is the Lower Limit? = 64.0782 -What is the Upper Limit? = 95.6924 -What is the Interval Estimate? = 64.0782,95.6924 c. Estimate the Parameters using a 99% confidence level. -What is the Margin of Error? = 22.7099 -What is the Lower Limit? = 57.1754 -What is the Upper Limit? = 102.5952 -What is the Interval Estimate? = 57.1754,102.5952 2. Sketch its graph and indicate the proper label. %3D

Q: Before agreeing to purchase a large order of polyethylenesheaths for a particular type of…

A: Given: Null hypothesis is  Ho:σ=0.05 True standard deviation of sheath thickness is given as…

Q: Based on previous school records, the standard deviation of the height of Grade 10 students in a…

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: A job placement director claims that the average starting salary for nurse is $25000. A sample of 15…

A: The null and the alternative hypothesis are based on the population mean: H0 : μ = 25000H1 : μ ≠…

Q: A random sample of 16 workers was taken from the workers of one of the factories, and it was found…

A: Given- A random sample of 16 workers was taken from the workers of one of the factories, and it was…

Q: A cell phone company claims that the average time a person spends on their phone is 12.8 hours a…

A: Given that, Population mean=μ=12.8 Hours Sample mean=X Bar=12.2 Hours Sample standard deviation= 2.3…

Q: The average standard deviation of the waiting time for a single queue is 4.7 minutes. The average…

A: The hypotheses for the test are given below: Null hypothesis: H0: σ=4.67. Alternative hypothesis:…

Q: Stephen has found out that the average weight of packed gummy candies selected from a normally…

A:

Q: A physician routinely makes physical examinations of children and is concerned that a three-year-old…

A: The known values are, Use the Range Rule of Thumb, the minimum usual heights of three-year-old…

Q: A group of automotive engineers decided to conduct a study of its school buses and found that for 32…

A: (a) Obtain the margin of error at the 99% confidence interval for the mean. The margin of error at…

Q: A sample of assistant professors on the business faculty at state-supported institutions in Ohio…

A: It is given that the mean is 72000 and the standard deviation is 3000.

Q: in a preliminary sample of men from a certain geographical region, the standard deviation of their…

A: Determine the sample size The sample size is obtained below as follows: The formula of sample size…

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

A: According to the provided information,

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

A:

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

A: Given Data : Margin of error, ME = 0.25 population standard deviation, σ =…

Q: A sample of 8 items has an average fat content of 18.6 grams and a standard deviation of 2.4 grams.…

A: Given : μ = 18.6σ = 2.4n = 8 As standard deviation is known so we will apply z test 99% confidence…

Q: The Ball Corporation's beverage can manufacturing plant in Fort Atkinson, Wisconsin, uses a metal…

A: Given that,   Critical value: By using the z-tables, the critical value at 5% level of significance…

Q: The operation manager of a large production plant would like to estimate the average amount of time…

A:

Q: In order to estimate the average electric usage per month, a sample of 81 houses was selected and…

A: Given datasample size , n =81Population S.D , σ =310For 90% CIP(-z<μ<z) = 0.90∴ z=1.645…

Q: The Ball Corporation's beverage can manufacturing plant in Fort Atkinson, Wisconsin, uses a metal…

A:

Q: If a light bulb manufacturing company wants to​ estimate, with 90​% confidence, the mean life of…

A: It is given that confidence level is 0.90, standard deviation is 1000 and margin of error E is 250.

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

A: Determine the sample size n needed. Here, confidence level is 0.90.   Use EXCEL Procedure for…

Q: According to the National Association of Home Builders, the average cost of building a home in the…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: A random sample of 460 ball bearings chosen at random from a very large consignment is found to have…

A:

Q: Suppose from random sample of 500 teenagers, the mean number of sweaters owned was 12.5 and a…

A:

Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure for…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: With 90% confidence, for the sample mean 411, sample standard deviation 13.70, and sample size 35,…

A:

Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure for…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The sample size needed to estimate a population mean within 2 units with a 95% confidence when the…

A: Given,σ=8E=2Zc at 95% confidence is Zc=1.96n=?

Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure for…

A: Given Information: The annual expenditure for prescription drugs is $838 per person in the Northeast…

Q: If the standard deviation of scores on the MCAT exam is 11.0, how large a sample is needed to…

A: The random variable score follows normal distribution. We have to find the sample size.

Q: The following data represents the concentration of organic carbon (mg/L) collected from organic…

A: Given the data represents the concentration of organic carbon (mg/L) collected from organic soil.…

Q: The mean time it takes for a random sample of 758 airplanes to fly from Florida to New York was…

A: airplanes to fly from Florida to New York μ=165  standard deviation σ=45 The mean time n=758…

Q: The waiting time for patients at a local walk-in health clinic follows a normal distribution with a…

A: We have to find hypothesis..

Q: Suppose the population standard deviation is standard deviation "sigma"=7, an SRS of n=45 is…

A: Given that, σ=7,n=45 Critical value: Using the z-table, the critical value at 95% confidence level…

Q: The operations manager of a large production plant would like to estimate the average amount of time…

A: Since we know population standard deviation, use z-distribution to find z-critical value. Find…

Q: A fast-food franchiser is considering building a restaurant at a certain location. According to a…

A: Denote μ as the population mean number of pedestrians passing the location per hour.   It is needed…

Q: A biology student measured the ear lengths of an SRS of 10 Mountain cottontail rabbits. The ear…

A: Given: Sample size n=10 Population standard deviation σ=0.4

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

A: From the provided information, Standard deviation (σ) = 0.04 Confidence level = 95%

Q: A candy company claims that their bags of jellybeans have a mear weight of 9.45 oz. 125 randomly…

A: Given Data: x¯=9.68s=1.23n=125   Null and Alternate Hypothesis: H0: μ=9.45HA: μ≠9.45

Q: A random sample of 16 employees taken from the management level of the company gives a mean monthly…

A: Given that  Sample size = 16 , Mean = 17000 , Standard deviation = 5500

Q: prospective purchaser wishes to estimate the mean rand amount of sales per customer at a toy store…

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

Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure…

A: Given : Sample size = n = 60 Population standard deviation = σ = 300 Mean = μ = 838

Q: In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of…

A:

Q: In order to join a social and educational club for tall​ people, women must be at least 5​ ft 10 in.…

A: we know that  Z-score =(x-mu)/sigma  X~N(mu , sigma^2)

Q: A company produces laundry deyergents wants to estimate the mean amount of detergent in their 64…

A: Given, Margin error = 0.04 Standard deviation = 0.20   Critical value: Using z-table, the z-critical…

Q: If  the inspection division of a county weights and measures department wants to estimate the…

A: Solution: Given information: Margin of error = E= 0.01  liters Population standard deviation= σ=…

Q: 2. What must the standard deviation of eight measurements be to produce a confidence internal of…

A:

Q: According to the Annual survey of drugs expenditure in country X, the annual expenditure…

A: Let X be the random variable such that drugs expenditure in-country  x̅: Sample mean of drugs…

Q: Given that the population standard deviation is 1, determine the minimum sample size needed in order…

A: Given : population standard deviation = σ = 1 margin of error = E = 0.2 level of confidence = 95% At…