Suppose that the average number of hurricanes heading to RGV is 32 per year witha standard deviation of 2.8, and follow a Normal distribution. Identify the mean and the standard deviation for th problem. Is x 34 to the left or right of the mean when drawinig the bell curve?

Q: A random sample of 40 students has a mean annual earnings of​ $3120 and assume that the population…

A:

Q: The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is…

A: Solution Here we will use one sample t test to test the mean amount of summer rainfall for the…

Q: a normal distribution has a mean of 60 with a standard deviation of 8. for this population, which is…

A: Solution

Q: Suppose that the annual rainfall in Ferndale, California, is known to be normally distributed, with…

A: Given, Mean, μ = 35.5 Standard deviation, σ = 2.5 We have to find the probability that the rainfall…

Q: when samples of size 25 are collected from a normal population that has a mean of 100 and a standard…

A: The sample standard deviation (s) is equal to the ratio of standard deviation of the population σ…

Q: Suppose that the manager of a construction supply house determined from historical recordsthat…

A: a) The expected lead time demand = 50 tons. Risk = 3% The demand during lead time is normally…

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

A: Given that a normal distribution has a mean of 20 and a standard deviation of 4.  We need to…

Q: Assume that the heights of a population of adults form a normal distribution with a mean µ =69…

A: Consider that there are 12 inches in 1 foot.The provided information is:

Q: At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of…

A: Given problem Given that   At a local high school, GPA's are normally distributed with a mean of…

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 261 days…

A: From the given Information, Let X represent the length of pregnancies in a small rural village and…

Q: On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of…

A: Solution: Let X be the IQ of an individual. From the given information, X follows normal…

Q: 1. The average number of liters of fresh milk that a person consumes in a month is 18 iters. Assume…

A: Solution: Let x be the fresh milk that a person consumes in a month is normally distributed with…

Q: Suppose that the annual rainfall in Ferndale, California, is known to be normally distributed, with…

A: Standard normal Distribution : Let x be the continuous random variable and it said to be follows…

Q: A distribution is given as X ~ U(0, 12). What is the theoretical standard deviation?

A: concepts and reasonuniform distribution is a continuous probability distribution.it is defined…

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

A: Given that, If X is normally distributed, X~N(21,7) Mean,mu = 21, Standard deviation, sigma=7 X =…

Q: In a certain factory of rags, the time it takes for the workers to finish one rag is normally…

A: Solution: Let X be the time it takes for the workers to finish one rag. From the given information,…

Q: For a population with a standard deviation of σ = 6, what is the z-score corresponding to a score…

A: We are given:

Q: Given a population where p = 0.10, find the standard deviation of the samping distribution when the…

A: It is given that p is 0.10.

Q: Suppose that wedding costs in the Caribbean are normally distributed with a mean of $6000 and a…

A: Note: Hey as per our honor code i can answer only three sub parts. Thanx

Q: A score that is 6 points below the mean corresponds to a z-score of z = -2.00. What is the…

A: Given: z-score = -2.00 Formula: Where,

Q: Sketch a normal distribution/bell curve with a mean of 60 and a standard deviation of 20.  What…

A: Given that  X~Normal( μ=60 , σ=20 )

Q: For a population with a standard deviation of σ = 5, what is the z-score corresponding to a score…

A: We have to find z score..

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(–…

A: Given X is normally distributed X ~ N(0,1)

Q: A certain machine makes electrical resistors having a mean resistance of 40 ohms and a standard…

A: Let X be the normal random variable representing the resistance of an electrical resistors, is…

Q: For a population with a standard deviation of a =6, what is the score corresponding to a score that…

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Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

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Q: Suppose X has a normal distribution with mean 30 and standard deviation five. Between what values of…

A: Empirical rules:1) P(μ-σ<X<μ+σ)=68%2) P(μ-2σ<X<μ+2σ)=95%3) P(μ-3σ<X<μ+3σ)=99.7%

Q: The lengths of pregnancies in a small rural village are normally distributed with a mean of 260 days…

A:

Q: Assume that the heights of a population of adults form a normal distribution with a mean µ =69…

A: It is known that, there are 12 inches in 1 foot.The provided information are:

Q: The average grade for an exam is 74, and the standard deviation is 7. If 12% of the class is given…

A: Let the random variable X denote grade score. Then, X~Nμ, σ2 with μ=74 and σ=7. Let α be the lowest…

Q: The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is…

A: GivenSample sizen=10Sample meanX=7.42Standard Deviations=1.3Population meanμ=11.52Null hypothesis…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, what value…

A: X follows a Normal distribution with mean = 35 and S.D = 7.5 Then z=(x-mean)/SD = (x-35)/7.5…

Q: Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(xs 53)?

A:

Q: Suppose x is a value in a normal distribution, with a mean of 12, and standard deviation of 4, What…

A: Given: x=4μ=12σ=4 The z score of x=4 is obtained as follows: Z=x-μσ=4-124=-84=-2 Thus, the z-score…

Q: Assume X is normally distributed with a mean of 10 and a standard deviation of 2.1. Determine

A:

Q: If x is normally distributed with a mean of 5 and standard deviation of 2, find the P(x>8).

A:

Q: As the sample size (n) increases, the standard deviation of x from that sample decreases, this…

A: Hello! As you have posted 3 different questions, we are answering the first question (8). In case…

Q: For a normally distributed population with a mean of 35 and a standard deviation of 7.5, what value…

A: From the given information, normal distribution with population mean as 35 and standard deviation as…

Q: Suppose that blood chloride concentration (denoted by X) (mmol/L) has a normal distribution with…

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: The lengths of pregnancies in a small rural village are normally distributed with a mean of 263 days…

A: Solution-: Given: μ=263 days, σ=13 days We want to find what range would you expect to find the…

Q: Suppose Stock A has had a mean price of $6.58 per share with a standard deviation of $1.88, and…

A: GivenFor stock A:-Mean(μ)=6.58standard deviation(σ)=1.88For Stock B:-Mean(μ)=10.57standard…

Q: The manufacturer of an extended-life lightbulb claims the bulb has an average life of 13,000 hours…

A: Given Information: Mean Life (u) = 13000 hours Standard Deviation (s) = 1000 hours

Q: With a mean of 10 and standard deviation of 5. Assume that the population data are normally…

A: The mean is 10 and the standard deviation is 5.

Q: The Weather Underground reported that the mean amount of summer rainfall for the northeastern US is…

A: Solution: State the hypotheses. Null hypothesis: That is, the mean amount of summer rainfall for…

Q: When samples of size 25 are collected from a normal population that has a mean of 100 and a standard…

A: Given, n = 25 μ = 100σ = 20       To find, Sampling distribution of standard deviation?

Q: Given a normal distribution with a mean of 130, and a standard deviation of 4.5, find the value of a…

A: Z-score corresponding to a normal variable value X is      (X-mu)/sigma Where,      X = normal…

Q: The average grade for an exam is 74, and the standard deviation is 7. If 12% of the class is given…

A: Given: Average=74 Standard deviation=7 z value for 88th percentile z=1.18(consulting the table…

Q: for a population with a standard deviation of 4.2 and mean of 32.5, draw a bell shaped curve,…

A:

Q: Assume that the heights of adult puffins are normally distributed, with a mean of μ=μ= 15.9 inches…

A: Given data, μ= 15.9  σ= 2.7  n=28 mean of the distribution of x¯  =?

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.