Ex: an electronics company manufactures resistors that have a mean resistance of 95 ohms and a standard deviation of 5 ohms. The distribution of resistance is normal. Find the probability that a random sample of n= 20 resistors will have an average resistance less than 90 ohms.

Q: A manufacturer knows that their items have a lengths that are skewed right, with a mean of 19.4…

A: Solution :  Mean = 19.4 Standard deviation = 2.8 Sample size = 36 P(xbar > 18) z-statistic: (xbar…

Q: announced that the median sales price of new houses sold one year was ​$211,000​, and the mean sales…

A: According to the sum, A report announced that the median sales price of new houses sold one year was…

Q: In a large population of college-educated adults, the mean IQ is 112 with standard deviation 25.…

A:

Q: A manufacturer produces widgets that are packaged in boxes of 200. The probability of a widget being…

A: It is given that the number of packaged widget boxes (n) is 200, and the probability, number of…

Q: The mean weight of junior high school students is µ = 45 kg. If a random sample of 90 students is…

A: Given: μ=45n=90σ=6

Q: The average number of acres burned by forest and range fires in a large New Mexico county is 4,300…

A:

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 31…

A: The given data are: Mean, μ=31 minutes Standard deviation, σ=5 minutes n=40 For sample average, z is…

Q: 14. The golf scores for a school team were normally distributed with a mean of 68 and a standard…

A:

Q: The average number of acres burned by forest and range fires in large New Mexico county is 4,300…

A: GivenMean(μ)=4300standard deviation(σ)=750

Q: n a recent​ year, the scores for the reading portion of a test were normally​ distributed, with a…

A: Given that, Mean = 22.9 Standard deviation = 6.7

Q: a. How many standard deviations away from the mean is a beetle with mandible length of .44 mm? b.…

A: A z-score is known as the standard score that determines how much the data point deviates from the…

Q: Assume that the traffic to the web site of Smiley’s People, Inc., which sells customized T-shirts,…

A: Note: Please repost part d as i can answer only 3 subparts as per my policy. Given data,Mean μ=4.56…

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 cost per household of owning a brand new car is P5,000. Suppose that we randomly…

A:

Q: 5. The average number of acres burned by forest and range fires in a large New Mexico county is…

A: 5) Given Information: Mean μ=4300 Standard deviation σ=750

Q: (a) A 120-watt fluorescent light has an average brightness of 1986 lumens, with a standard deviation…

A: Given : μ=1986 σ=94

Q: A client has an investment portfolio whose mean value is equal to $1,000,000 with a standard…

A: A client has an investment portfolio whose mean value is equal to $1,000,000 with a standard…

Q: Traveling between two campuses of a university in a city via shuttle bus takes, on average, 28…

A: P(X<30)=Pz<30-28540=P(z<2.53)=0.9943

Q: average salary for a large company is $85,000 with a

A: Given Data Population Mean,μ = 85000.0 Population Standard Deviation,σ = 20000.0…

Q: d) If they stop 30 cars during the first hour, find the mean and standard deviation of the number of…

A: Given Information: 90% of drivers do "buckle up" (wearing seat belts). (d) If they stop 30 cars…

Q: a certain population of the herring, Pomolobus aestivalis, the lengths of the individual fish are…

A: Let X be a random variable which indicates the length of the fish. Here it is given that- mean(μ)=54…

Q: a. What is the mean of the time interval? b. What is the standard deviation of the time interval? c.…

A: From the provided information, The probability density function of uniform distribution can be…

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: Rivers Casino did an audit of all of their blackjack tables and found that the amount of money…

A: According to the provided information, μ=$6000σ=$200

Q: The monthly utility bills in a city are normally distributed, with a mean of $100 and a standard…

A: Here, mean is $100 and standard deviation is $14.

Q: The commuting time for a student to travel from home to a university campus is Normally distributed…

A: Let X be the commuting time for a student to travel from home to a university campus is Normally…

Q: The diameter of a brand of tennis balls is approximately normally distributed, with a mean of 2.63…

A: Given that, μ=2.63,σ=0.03,n=9 The mean of sampling distribution of sample mean is, (a) The standard…

Q: A manufacturer knows that their items have a normally distributed length, with a mean of 13 inches,…

A:

Q: A quality control expert at a large factory estimates that 10% of all the batteries produced at the…

A:

Q: The heights of strawberry plants are Normally distributed with a mean of 12 inches and a standard…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…

Q: A report announced that the median sales price of new houses sold one year was $231,000​,and the…

A:

Q: "Ch6. Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Central Limit Theorem for mean: If a random sample of size n is taken from a population having mean…

Q: A study found that the heights of college males follow a normal distribution with a mean of 70…

A: Given information- Mean height, μ = 70 inches Standard deviation, σ = 2.5 inches We have to find the…

Q: Suppose you sample one value from a uniform distribution with a = 0 and b = 20. a) What is the…

A: Let the random variable X follows uniform distribution on interval [a = 0, b= 20]   The PDF of…

Q: Assuming that student incomes from employment in industry during the day are normally distributed…

A:

Q: If a gambler places a bet on the number 7 in​ roulette, he or she has a​ 1/38 probability of…

A:

Q: An electrical company claims that the average life of the bulbs it manufactures is 1200 hours with…

A:

Q: A manufacturer produces widgets that are packaged in boxes of 200. The probability of a widget being…

A: Some characteristics of binomial distribution:Each trial has exactly two possible outcomes. In this…

Q: (b)The daily withdrawals from an ATM located at a service station is normally distributed with a…

A: x=5000σ=800

Q: A. The average cost per household of owning a brand new car is 5,000. Suppose that we randomly…

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

Q: Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Solution: Let X be the transport time. From the given information, X has mean µ=28 minutes and a…

Q: In recent years, the average movie ticket cost $7.89. In a random sample of 50 movie tickets from…

A: From the provided information, Mean (µ) = $7.89 Population standard deviation (σ) = $1.39 X~N (7.89,…

Q: c) An engineering company manufactures a product with a mean of 48,000 and a standard deviation of…

A: c. The provided information is µ=48000 hours σ=6000 hours  Using normal distribution  i) After less…

Q: A technical assistance service with electronic equipment has that its service time is normally…

A: Given,mean(μ)=80standard deviation(σ)=25

Q: a) No more than two of them dislike their mother in law? c) What is the expected number of women ()…

A:

Q: 7. Assume that the height of people, measured in inches, has a normal distribution with a mean of 65…

A:

Q: "Chá. Traveling between University of Santo Tomas and Rizal Park, Manila via shuttle bus takes, on…

A: Suppose, X be the time takes a shuttle bus. Assume that, X follows Normal distribution with average…

Q: c. What is the probability that exactly ten of the 45 luxury cars sold are silver? d. What is the…

A: It is given that n=45 and p=0.191.

Q: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is…

A: According to AAA, the price of a gallon of regular, unleaded gas across gas stations in Ohio is…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.