Q2) A certain machine makes electrical resistors having a mean resistance of 60 ohms and a standard deviation of 2 ohms. Assuming that the resistance follows a normal distribution and can be measured to any degree of accuracy, what percentage of resistors will have a resistance exceeding 63 ohms?

Q: A population of scores has mean 80. in this population, a score of X= 86 corresponds to z= +2. what…

A:

Q: The company is expecting that only 104 of this year's production will fail in less than 3 years and…

A: Given that  Let X denotes the life expectancy of computer produced by Ahmadi  With mean =6 years and…

Q: The average life expectancy of computers produced by Ahmadi, Inc. is 6 years with a standard…

A: Solution: Let X be the life expectancy of computers. From the given information, X follows normal…

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: Suppose a Nevada Highway Patrol officer takes 50 measurements on the speed of cars on the 15 as they…

A: Given: 50 measurement on the speed of cars.

Q: a population is described by: X~unif (2,14). What percentage of the values are within one standard…

A: We want to find the percentage of the values are within one standard deviation of the mean.

Q: A data set has a mean of 300 and a standard deviation of 40. What value would have a z-score of z =…

A: z-score of z = - 2 is -7.55 Reason: z-score of z = - 2=-2-meanstandard deviation=-2-30040=-7.55

Q: You are performing a study about weekly per capita milk consumption. A previous study found weekly…

A: Formula : Standard deviation:

Q: Assume that adults have IQ scores that are normally distributed with μ=38 and a standard deviation…

A:

Q: Assume that adults have IQ scores that are normally distributed with μ=105 and a standard deviation…

A: Assume that adults have IQ scores that are normally distributed with μ=105 and a standard deviation…

Q: Question 1. What is the probability that a randomly selected computer will have a life expectancy of…

A: GivenMean(μ)=6 years = 6×12=72 monthsstandard deviation(σ)=10 months

Q: a male polar on average weighs 525 kg the population of standard deviation is 58 kg suppose that the…

A: Given information- Population mean, µ = 525 kg Population standard deviation, σ = 58 kg Let X be the…

Q: The mean height of a sample of 25 trees of a particular species is 20 feet. The standard deviation…

A: mean = 20 standard deviation = 3 Sample size= 3

Q: A simple random sample of 64 observations was taken from a large population. The sample mean and the…

A:

Q: A population has a mean  u=21 and standard deviation o=11 Find the z-score for a population value of…

A: Given, x = 40 μ = 21σ = 11

Q: A population of scores has u=55 and o=15.  if 5 points are subtracted from every score in the…

A: The given data is μ = 55σ = 15 Suppose x1, x2, x3, x4, ..., xn are the data points…

Q: The residents of Toledo produce on average 600 pounds of solid waste each year, and the standard…

A: Obtain the weight range that contains at least 75% of all residents’ annual garbage weights.   The…

Q: A normal population has the mean m=70 and standard deviation 20. what proportion of the population…

A: Obtain the proportion of the population is greater that 95. The proportion of the population is…

Q: If a data set has a mean of 48.2 and a Standard deviation OF 12.5 What is the = Score for a data…

A: we know,if a data set has,the mean(μ)  = 48.2the standard deviation(σ)  = 12.5a data value(x) = 33.2

Q: suppose babies botn after a gestiation pwriod of 32 to 35 weeks have a mean weight of 2700 grams and…

A: The objective of this question is to calculate the z-scores for two babies with different gestation…

Q: In a survey, the mean weight of 1005 rats was calculated to be 132 gr. The standard deviation of the…

A:

Q: Provide the null and alternative hypotheses used to address these problems. Make sure that your…

A: It is needed to find the null and alternative hypotheses.

Q: Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed…

A:

Q: 19.62 of 24 pts Question Help v To compare the dry braking distances from 30 to 0 miles per hour for…

A: Claim is option b i.e mean braking distance is different  for the two makes of machines .

Q: Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed…

A:

Q: a population of scores has u=44. in this population a score of x=40 corresponds to z = -1.00. What…

A: We have given that, Population mean (u) = 44, raw score of population (X) = 40 and z- score = -1. 00…

Q: In a population, the data value 180 has a z score of -0.8. The standard deviation of this population…

A: The question is about z score.Given :Raw value ( x ) = 180z score = -0.8Standard deviation of the…

Q: A population of scores has u = 50 and o = 5. If every score in the population is multiplied by 3,…

A: If a constant value multiplies to each score in distribution, then the mean and standard deviation…

Q: 2. 1 (your instructor) am 66" tall. Assume that the population mean for adult males is 70" with a…

A: given data normal distributionμ = 70σ = 2.5x = 66what is his percentile?

Q: A population has a mean of u=50 and a standard deviation of 0=10. If 3 points were added to every…

A: The properties of mean are:E(X + a) = E( X ) + a * E(X+a)=E(X)+aE(aX)=aE(X)The property of variance…

Q: The average life expectancy of computers produced by Ahmadi, Inc. is 6 years with a standard…

A: Assume that the lives of computers are normally distributed.

Q: Suppose the police have set up automatic speed surveillance on a street in an area. During one week…

A:

Q: A population of score has μ  = 44. in this population, a score of X = 40 corresponds to z = -0.50.…

A:

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.