3. A IV commercial claims that the mean cost of a funeral today is above $8000. A survey of 233 funerals showed that they had a mean cost of $8150, with a standard deviation of $373. Test the commercial's claim at the 0.01 level of significance.

Q: Students at Lake Mean PE class ran a 5K with a mean run time of 31 minutes and a standard deviation…

A: Given that Mean = 31 standard deviation = 4  We need to find probability between 23 and 27…

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the…

A: The mean is 500 and the standard deviation is 100.

Q: The Department of Trade and Industry surveyed the price of unleaded gasoline at gas stations in…

A: (a)   Obtain the mean price of Tagum city.   Use EXCEL Procedure for finding the value of sample…

Q: Given the previous problem where Rashid is 84 inches tall and that the height of male in the United…

A: We will consider one of the most remarkable results in probability namely the central limit theorem.…

Q: sets represented by the following histograms has the largest standard deviation?A data set lists the…

A: Given: Minimum = 3 Median = 15 Q3 = 16 IQR = 4 Maximum = 19

Q: In 1955, Life Magazine reported that the 27 year-old mother of three worked, on average, an 75 hour…

A: Given Information :  In 1955, Life Magazine reported that the 27 year-old mother of three worked, on…

Q: Consider the following data and calculate the standard deviation. 6.24,  6.21,  6.24,  6.28

A: The mean is, μ=∑XN=6.24+6.21+6.24+6.284=24.974=6.2425 The mean is 6.2425.

Q: Suppose that the sample dataset of July 1 temperatures consisted of 64 observations and that these…

A: given data standard deviation s = 4 sample size n = 64

Q: 1. The owner of Britten's Egg Farm wants to estimate the mean number of eggs laid per chicken. A…

A:

Q: 19. Yellowstone Park Medical Services provides emergency health care for park visitors. An average…

A: Given: μ = 21.7 σ = 4.2 Formula Used: Control limits = μ ± 3σ Upper control limit = μ + 3σ Lower…

Q: If the variance of a particular data set is 7.5820, the standard deviation is

A: We know that variance is the average squared distance from the mean value. And the standard…

Q: 3. A line up for tickets to a local concert had an average (mean) waiting time of 20 minutes with a…

A: Formula : Z =(X - μ)/σ

Q: The town of KnowWearSpatial, U.S.A. operates a rubbish waste disposal facility that is overloaded if…

A: Introduction:The sampling distribution of the sample mean, X̅ for a large sample (n ≥ 30) is…

Q: 19. Yellowstone Park Medical Services provides emergency health care for park visitors. An average…

A: Given Information:  Mean (u) = 21.7  Standard Deviation (s) = 4.2  Sample size (n) = 10

Q: Calculate the Mean and Standard Deviation for the data given below. Class 5 10 15 20 25 30 35 40…

A: Given Data :

Q: The number of hours worked per week for a sample of ten students is shown below. Student Hours 1 2…

A: Note- As per our policy we can answer the first 3 sub-parts of a question.   Given information- The…

Q: 7) Calculate the vari ence and the standard deviation for the following data 3. 4 Number of children…

A: Given that : A frequency table is here By using this information we calc5 relative frequency and…

Q: Suppose, according to a 1990 demographic report, the average U. S. household spends $90 per day.…

A:

Q: 4-A health maintenance organization (HMO) wants to estimate the mean length of a hospital stay. How…

A: The random variable length of a hospital stay follows normal distribution. The margin of error is…

Q: A government agency provides the number of miles that residents of the 75 largest metropolitan areas…

A: The random variable X follows normal distribution. There are two samples of data which are named as…

Q: 9) In a class of 30 students, how many students failed the test (below 64), if the mean grade on a…

A:

Q: 24. Suppose annual salaries for sales associates at Target have a mean of $32,500 and a standard…

A: According to the provided information, Mean (μ) =$32500 Standard Deviation (σ) = $2500

Q: With a sample of 62, a population mean of 29, and a standard deviation of 9, what is the standard…

A: Givensample size(n)=62population mean(μ)=29standard deviation(σ)=9

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are thez-scores for the…

A: Introduction: Consider X as a normally distributed random variable, with mean μ and standard…

Q: The Highway Patrol, using radar, checked the speeds (in mph) of 30 passing motorists at a…

A:

Q: Consider a sample with a mean of 500 and a standard deviation of 100. What are the z-scores for the…

A: Consider that the sample mean and standard deviation of a random variable x are x̄ and s,…

Q: To set aside funds for fuel for mid-level and senior managers, a large financial institution col-…

A: Class(1) Frequency (f)(2) Mid value (x)(3) f⋅x(4)=(2)×(3) cf(6) 0-10 4 5 20 4 10-20 23 15 345 27…

Q: 1. A business consultant wanted to investigate if providing day-care facilities on premises by…

A: Let, 1: Provided day-care facilities 2: Not provided day-care facilities Given:

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

A: Given:

Q: Which of the following would be the standard deviation used in developing the p-control chart?

A: Given:  Proportion of defective product p= 0.03 Sample size n=30  To find standard deviations used…

Q: The Highway Patrol, using radar, checked the speeds (in mph) of 30 passing motorists at a…

A: In statistics there are two types of measures namely measures of central tendency and…

Q: 2. A scrap metal dealer claims that the mean of his cash sales is "no more than $80," but an…

A: Given that: Population mean(u) = $ 80 Sample mean = $ 91 SAMPLE standard deviation = $21 Sample size…

Q: 2. A university dean wishes to estimate the average number of hours his part-time instructors teach…

A:

Q: An employer claims that full time employees have a mean income of $35,000. A sample of 200 employees…

A:

Q: 1. There are 95% of students at school weigh between 62 kg and 90 kg at Westchester Community…

A: 95% of the data lies between X¯-1.96×σ and X¯+1.96×σ hence we get, X¯-1.96×σ = 62 X¯+1.96×σ = 90…

Q: reasonably regarded as a a sample from a standard deviation

A: Given: In a sample of 400 male students, it was observed that they have a mean height (of 55+18)…

Q: # 6- A set of data items is normally distributed with a mean of 90 and a standard deviation of 5.…

A:

Q: 4. The lowest and the highest data value of a data set are 12 and 28 respectively, then the…

A:

Q: A demographics researcher claims that the mean household income in a recent year is the same in Ada…

A: Given: α = 0.10 n1 = 18 X1 = 58300 s1 = 9000 n2 = 20 X2 = 56600 s2 = 15600 Formula Used: t-test…

Q: The following are grade point averages measured in a sample of 8 undergraduate students who are…

A: Solution: Let X be the grade point average. The given data is 3.28, 2.97, 3.05, 3.61, 3.39, 2.95, 3…

Q: Consider the following service system. The average inter-arrival time is 10 minutes, and the…

A: Data Given: The arrival Rate is 10 minutes. Service Time is 5 minutes.

Q: Consider a sample with a mean of 30 and a standard deviation of 5. Use Chebyshev’stheorem to…

A: Empirical rule is used to estimate the percentage of data in an interval of normal distribution. The…

Q: Toby's Trucking Company determined that on an annual basis, the distance traveled per truck is…

A: It is given that the mean and standard deviation are 50,000 and 12,000.

Q: 2.) A ski gondola in Vail, Colorado that carries skiers up a mountain bears a plaque stating that…

A: n=12, maximum weight = 2004 mean = 188.6  std.dev = 38.9

Q: . According to Dietary Goals for the US (1977), high sodium intake may be related to ulcers, stomach…

A: (1) We have given that,  Sample mean (x̄) = 203, standard deviation   (s)= 6.2 , sample size (n) = 9…

Q: In 1955, Life Magazine reported that the 25-year-old mother of three worked, on average, an 80 hour…

A: Claim : the mean work week has increased for women

Q: The Downtown Parking Authority of Tampa, Florida, reported the following information for a sample of…

A: We are given a table.

Q: Assuming the sample mean and standard deviation are indicative of the class as a whole, in what…

A:

Q: 3. An extensive study of the cost of health care in the United States presented data showing that…

A: