10. The mean output of a certain type of amplifier is 287 watts with a standard deviation of 10 watts. If 56 amplifiers are sampled, what is the probability that the mean of the sample would be greater than 285.7 watts? Round your answer to four decimal places. Answer:

Q: 1. The iPhone battery capacity is normally distributed with a mean of 4 years and a standard…

A: 1 year = 12 months Given: μ = 484 years = 48 months σ = 1010 (a) The corresponding z-value…

Q: Normal, with mean 70 inches and standard deviation 8 inches. ) If you choose one student at random,…

A: We have given that.   X~N( μ , ?^2 )   μ =6 , ? =2.4  , n= 25   Z-score =( x - μ )/?

Q: The operation manager at a tire manufacturing company believes the mean mileage of a tire is

A:

Q: 11) Find the score that separates the top 80% from the bottom 20% if the Mean is 100 and the…

A: Given: Using Z table or excel command =NORMSINV(0.20) we get,

Q: The daily dinner bills in a local restaurant are normally distributed with a mean of $28 and a…

A: We have given that  The daily dinner bills in a local restaurant are normally distributed with a…

Q: The Bureau of Labor Statistics provides compensation information on and services for various…

A:

Q: 7. A statistical study of elves results in finding a mean height of 38.5 inches with a standard…

A:

Q: he number of chocolate chips in an​ 18-ounce bag of chocolate chip cookies is approximately normally…

A: Note: Please repost part d as i can answer only 3 subparts as per my policy. Given data,μ=1252σ=129

Q: Suppose the country club bills based on a sample of 4 members are: 410, 1,089, 637, 961. What is the…

A: Given information- We have given the country club bills based on a sample of 4 members. 410, 1,089,…

Q: The number of Grade 11 learners per section in Kasiglahan Village Senior High School has a mean of…

A: The population mean is 56.3. The population standard deviation is 8.6. We have to write which…

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

A: Given :Population standard deviation = 2.8 daysCompany wants to be 95% confident that the true mean…

Q: Based on a recent report, the cost of healthcare is $8,086 per person in the United States. Suppose…

A: Given : Population Mean,μ = 8086.0 Population Standard Deviation,σ = 2500.0 sample…

Q: (d) What is the probability that the number of drivers will be within 2 standard deviations of the…

A: Let X=the number of drivers X follows a Poisson distribution with mean= 20 So the standard…

Q: The Average teachers salary is $57,337. The distribution is normal with a standard deviation with…

A: Given, μ=57337σ=7500 Let X be the amount teacher makes per year. The required probability that a…

Q: The scores of students on the SAT college entrance examinations at a certain high school had a…

A:

Q: 1. The Prior to medical visits, patients are asked to complete a self-administered medical history…

A:

Q: 5. A statistics professor reported that the mean score in a recent quiz is 72 and the standard…

A: Answer - Given X~ N( μ, σ)                Where μ = 72    and σ = 6                Find the…

Q: The number of pets owned by twelve randomly chosen students are  0 0 1 3 14 1 2 2 0 1 2 1 If each…

A: Given data sets are 0 0 1 3 14 1 2 2 0 1 2 1

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

A:

Q: 2. A normally distributed set of 968 values has a standard deviation of 11 and a mean of 108. Which…

A:

Q: 1. The average grade of 2nd year students majoring in Civil Engineering is normally distributed with…

A: NOTE- AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION ONLY      Here Given For  Civil…

Q: 15.The average hotel price in Clearwater Beach, Florida, was $135 per night in 2019.Assume that the…

A:

Q: 1) You run quality control for a bolt producer. This past week, the plant completed a run of 3-inch…

A: Given information: μ=3.02, σ=0.04 x = 3.07

Q: According to data from the 2010 United States Census, 64.2% of Americans in Susanville, CA were…

A: 64.2% of Americans in Susanville, CA were male, p = 0.642 Sample size, n = 100 Among the sample, 54…

Q: In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a…

A: To determine: To determine how may would you expect to be taller than 71 inches . Given data: In a…

Q: Assume that IQ scores are normally distributed, with a mean of 100 points and a standard deviation…

A:

Q: According to government data, the probability that a woman between the ages of 25 and 29 was never…

A:

Q: 10. Suppose approximately 95 % of people who wrote a standardised test had marks that ranged from 78…

A: here given ,  Suppose approximately 95 % of people who wrote a standardised test had marks that…

Q: 9. Brooke Henderson of the LPGA, who just won her second major last weekend, played a round of golf…

A: GivenMean(μ)=21.4standard deviation(σ)=16.6

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: The head of maintenance at XYZ Rent-A-Car believes that the mean number of miles between services is…

A: Solution: Let X be the number of miles between services. From the given information, X has mean…

Q: The blood cholesterol levels of men age 55 to 64 are approximately Normal, with mean 222 milligrams…

A: 4. Given that μ=222σ=37 (a) The percent of these men have high cholesterol is,…

Q: The price of a particular brand of jeans has a mean of $37.99 and a standard deviation of $7. A…

A:

Q: Suppose that the caffeine in one tablespoon of Folgers is normally distributed with a mean of 45 mg…

A:

Q: The quality-control manager at a light bulb factory needs to determine whether the mean life of a…

A: We have given that  Sample size n=64  Sample mean = 350 Standard deviation = 100 Note :-According to…

Q: According to data from the 2010 United States Census, 43.1% of Americans over the age of 65 were…

A: It is known that, the mean of the sampling distribution of sampling distribution, p-hat is equal to…

Q: If it is known that the mean time between eruptions at Old Faithful is 96 minutes with a standard…

A: Given that standard deviation of 12 minutes

Q: 10. If you have a sample of n=25, what is the standard error if the population standard deviation is…

A: The standard error of a statistics is shows the standard deviation of a estimate of a parameter and…

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

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: i. What are the mean and standard deviation of the total amount of milk and flour in Jim's…

A: Here Take  Random variable  X= no of Cup of Flour in single recipe Y=no of cup of Milk in Single…

Q: From a population of 200 elements, a sample of 81 elements is selected. It is determined that the…

A:

Q: Suppose a subdivision on the southwest side of Denver, Colorado, contains 1,800 houses. The…

A: Given E(x) =229000 S. D. =8500 Sample size=110

Q: The distribution ages for students at the state college is positively skewed with a mean of ?= 21.5…

A: From the provided information, Mean (µ) = 21.5 Standard deviation (σ) = 3 Let X be a random variable…

Q: What is the standard deviation of the following sample of size n = 5?-3,5,8,10,12

A:

Q: An SRS of 1200 American adults is asked, "What do you think is the most important problem facing our…

A: Given that, The proportion p^ is approximately follows normal distribution with mean of μp^=0.30 and…

Q: 4. A normally distributed set of 1,010 values has a mean of 103 and a standard deviation of 12.…

A:

Q: I am confidant that the mean starting salaries of all my econ students is $60,000. If i am right,…

A:

Q: It is estimated that 16.6% of all adults in the U.S. are uninsured. You take a random sample of 250…

A: Given Data Probability,p = 0.166 number of trial,n = 250

Q: Assume that IQ scores are normally distributed, with a mean of 100 points and a standard deviation…

A:

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.