The distribution of the ages of all IRSC students Is known to be normally distributed with a mean of 20.3 years in a standard deviation of 5.5 years uses this information to determine the following probabilities round solutions to four decimal places if necessary Find the probability that a random simple of 100 students has a meme age of greater than 20.8 years P( x̅>20.8) = Find the probability that a random simple of 100 students has a mean age between 20.6 and 21.2 years

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=100 and a standard…

A:

Q: A bus comes by every 15 minutes. The times from when a person arives at the busstop until the bus…

A: NOTE: As per my policy i can answer only 3 sub parts, kindly post the remaining subparts Given that,…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: From the provided information, Mean (µ) = 505 Standard deviation (σ) = 180 Let X be a random…

Q: What is the standard deviation of the time spent with a patient? What is the likelihood that the…

A: The standard deviation of the time spent with a patient can be calculated as:   Thus, the standard…

Q: Suppose that the duration of a particular type of criminal trial is known to be normally distributed…

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

Q: Assume that adults have IQ scores that are normally distributed with a mean of mu equals 105   and…

A:

Q: The distribution of all Indian Rivers County grapefruit Weights is known to be normally distributed…

A: We have given that.   X~N( μ , ?^2 )   μ =290 , ? =46   Z-score =( x - μ )/?

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A: From the given information,   Mean = 520 Standard deviation = 180 Sample size = 35   The objective…

Q: The manager of a new coffee shop is collecting information for how often cars arrive at its…

A: Given information- We have given a Poisson distribution. We have given that the manager has counted…

Q: Scores for a common standardized college aptitude test are normally distributed with a mean of μ =…

A: The objective of this question is to find the probability of a single person scoring at least 536.3…

Q: A leading magazine reported at one time that the average number of weeks an individual is unemployed…

A:

Q: The probability that a randomly selected adult has an IQ less than 128 is (Type an integer or…

A: Given:  Consider X as a random variable that follows a normal distribution with mean 22 and…

Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: We have given that.   X~N( μ , ?^2 )   μ = 148, ? =13 , n= 49   Z-score =( x - μ )/?   NOTE:-…

Q: Show all steps/calculator commands used using a ti84 graphing calculator. The heights of women age…

A: Let us denote: X=The heights of women age 20-29 in the U.S.X follows a normal distribution with…

Q: Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol use.…

A: Given information- Population mean, µ = 40 Population standard deviation, σ = 17 Sample size, n = 40…

Q: For a standardized psychology examination intended for psychology majors, the historical data show…

A:

Q: Americans receive an average of 16 Christmas cards each year. Suppose the number of Christmas cards…

A: Let X be the number of Christmas cards received by a randomly selected American. The random variable…

Q: et x denote the time it takes to run a road race. Supposex is approximately normally distributed…

A:

Q: A sample of size 190 will be drawn from a population with mean 45 and standard deviation 11. Use the…

A: Probability: Probability is the measurement of the probability that an event will occur in a Random…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 101.1 and a standard…

A:

Q: ading pr e probab r interme

A: The information provided in the question are as follows :- Population mean (μ)=500 Population…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 101.9 and a standard…

A: Let "X" be the IQ score for adults.

Q: Alcohol withdrawal occurs when a person who uses alcohol excessively suddenly stops the alcohol use.…

A: The objective of this question is to find the probability that the sample mean time between the last…

Q: A group of 30000 tax forms has an average income of μ  = 37000 with a standard deviation of σ =…

A:

Q: Suppose that the duration of a particular type of criminal trial is known to be normally distributed…

A: Given: mean = 22 days standard deviation = 6 days

Q: Suppose that the duration of a particular type of criminal trial is known to be normally distributed…

A: We have given that,  X are normally distributed with mean (mu) = 15 and standard deviation (sigma) =…

Q: A particular fruit's weights are normally distributed, with a mean of 525 grams and a standard…

A:

Q: Let x denote the time taken to run a road race. Supposex is approximately normally distributed with…

A: Ans: Given,   X ~ N(μ, σ)        Where  μ  = 190 minutes   and σ  = 21 minutes        Find  P( 219…

Q: Suppose a lift skill distribution exist with a mean of 150 in standard deviation of 18. Consider a…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=100and a standard…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 20 Let X be a random variable…

Q: Let xx represent the full height of certain species of tree. Assume that xx is normally distributed…

A: The variable x is the full height of certain species of tree which follows normal distribution with…

Q: Suppose that a category of world class runners are known to run a marathon (26 miles) in an average…

A: From the provided information, Mean (µ) = 145 Standard deviation (σ) = 11 X~N (145, 11) Sample size…

Q: The incubation time for a breed of chicks is normally distributed with a mean of 24 days and…

A: a)   Determine the number of chicks expected to hatch in the time period 20 to 28 days.   The number…

Q: The distribution of all registered nurses salary on the treasure coast is known to be normally…

A: Let X be the random variable from normal distribution with mean (μ) = $59,350 and standard deviation…

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=100 and a standard…

A: Given Information: IQ scores are normally distributed with a mean of μ=100 and a standard deviation…

Q: Assume that adults have IQ scores that are normally distributed with a mean of mμ=100 and a standard…

A:

Q: Find the probability that a randomly selected adult has an IQ between 91 and 119.

A: Let X denote the IQ scores of the adults. Given that X follows N(mean = 105, SD = 15), then  Z = (X…

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

A:

Q: Find the probability that a single randomly selected value is less than 18. P(X < 18) = Find the…

A: The probability that a single randomly selected value is less than 18 is,…