Age of an animal (X) has the normal distribution with mean = 5, variance = 9; find the probability P(4

Q: μ= 6; σ=2 P(5 < x < 8) =

A: The P(5 ≤ X ≤ 8) is obtained below: From the given information, the value of mean is 6 and standard…

Q: Attendance at large exhibition shows in Denver averages about 8010 people per day, with standard…

A:

Q: Scores on a test are normally distributed with a mean of 76 and a standard deviation of 6. Using the…

A:

Q: Attendance at large exhibition shows in Denver averages about 8060 people per day, with standard…

A: (a)The probability that the daily attendance will be fewer than 7,200 people is obtained below:From…

Q: A population is known to conform to a normal distribution with mean a-11.6 and standard deviation…

A:

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Given. Mean=4 Standard deviation=6

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A:

Q: For a standard normal distribution: a) find the probability a score is between the mean and 1.78…

A: The mean and standard deviation of the standard normal distribution are 0 and 1.

Q: GPA of students enrolled at a university has an approximately normal distribution with a mean of…

A:

Q: The life of a Radio Shack record player is normally distributed with a mean of 4 years and a…

A:

Q: Denver averages about 7800 people per day, with standard deviation of about 525. Assume that the…

A:

Q: On an exam in Statistics and Probability, the grades are normally distributed with a mean of 76 and…

A:

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Given Data : Population Mean,μ = 38 Population Standard Deviation,σ = 14

Q: The compressive strength of samples of cement can be modeled by a normal distribution with a mean of…

A:

Q: a normal distribution with mean u = 58 and standard deviation o = 4.2 %3D

A: Given that  A graph of normal distribution with  Mean (μ) = 58 Standard deviation (σ)= 4.2   We know…

Q: A random variable has a normal distribution with a mean of 15 and a standard deviation of 2.5.…

A: The given mean is 15, and standard deviation is 2.5. The standard score is -2.15.

Q: Scores on a standardized reading test for 4th-grade students form a normal distribution with the…

A:

Q: The compressive strength of samples of cement can be modeled by a normal distribution with a mean of…

A: Answer - Given  X  ~  N( μ, σ )                 Where   μ = 6000   and   σ  = 100…

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Given that x follows a normal distribution with mean=51 and standard…

Q: The heights of boys at a particular age follow a normal distribution with mean 150.3cm and variance…

A: As per the bartleby guideline if more than one question is asked only first question to be answered…

Q: P(10 ≤ x ≤ 26) =

A: here given , mean = 15.2  standard deviation  = 4.3

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A:

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Given that.   X~N( μ , ?^2 )   μ=8     , ?=6   Z-score =( x - μ )/?

Q: average score of students taking a statistics final was 80 with a standard deviation of 7. assuming…

A:

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Given X is normal Distributed with mean µ = 14.0 and standard deviation σ = 3.7 now will using…

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Here, mean is given as 4 and standard deviation is 2.

Q: Find the area of the shaded region below z-1.13. The graph depicts the standard normal distribution…

A: Let Z represents the standard normal distribution i.e Z follows N(0,1). We will use the standard…

Q: A random variable has a normal distribution with a mean of 15 and a standard deviation of 2.5.…

A:

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: According to the provided information, μ=4σ=2

Q: For a standard normal distribution, find: P(-2

A: We need to find the value of P(-2.26 &lt; z &lt; -0.53).

Q: A sample size 150 will be drawn from a population with mean 25 and standard deviation 28. It is…

A: Given A sample size 150 will be drawn from a population with mean 25 and standard deviation 28.

Q: A large tank of fish from a hatchery is being delivered to a lake. The hatchery claims that the mean…

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: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Normal distribution : A normal distribution is the proper term for a probability bell curve.

Q: The random variable X has a normal distribution with mean 80 and standard deviation 6. Calculate P…

A: By using the given information, we have The random variable X has a normal distribution with, Mean =…

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: The random variable X follows normal distribution. The population mean is 14.2. The population…

Q: A sample size 15 will be drawn from a population with mean 125 and standard deviation 28. It is…

A: Here population distribution is not normal nor the sample size more than 30 .  So central limit the…

Q: Consider the three-dimensional normal distribution which has PDF, c exp (-r² – 2s² – 31) etermine…

A:

Q: Calculate the standard deviation o of X for the probability distribution. (Round your answer to two…

A:

Q: Scores on a standardized exam for 2nd graders are approximately normally distributed with a mean of…

A: Given data: Mean =72 Standard deviation  = 6

Q: et x have a normal distribution with a mean of 57.7 and a standard deviation of 4.95. The z value…

A: Solution: Let x have normal distribution with mean μ= 57.7 and standard deviation σ= 4.95.…

Q: normal distribution has a mean of 20 and a standard deviation of 4. Determine the z-score for the…

A: we have to find z score.

Q: Siven a normal distribution with mean of 80 and variance of 100, the probability that ssumes a value…

A:

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A:

Q: What standard z value does the value x=55 convert to?

A: Given  Mean = mu = 50 Standard deviation = s = 10 Raw score = x = 55

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A:

Q: Assume that x has a normal distribution with the specified mean and standard deviation. Find the…

A: Obtain the probability X lies between 5 and 8. The probability X lies between 5 and 8 is obtained…

Q: Repair Cost for Microwave Ovens The average repair cost of a microwave oven is $55, with a standard…

A: GivenMean(μ)=55standard deviation(σ)=8

Q: d) For a standard normal distribution, find the probability a score is lower than 2.37 standard…

A: d) A standard normal variable z follows normal distribution with mean 0 and standard deviation 1.

Q: Final exam scores have approximately a normal distribution with mean 78 and standard deviation 9.5.…

A: Let X denote the Final exam scores  and its approximately follows normal distribution with mean 78…

Q: The lifetimes of a certain type of battery under continuous use follow a Normal distribution. The…

A: Given data, μ=15σ=0.95If n=20P(X&gt;15.2)=?