QUESTION 12 If a random sample of size 20 is drawn from a normally distributed population with mean 23 hours. What is the probability that the sample mean exceeds 24.898 hours, if the sample standard deviation is 6.39 hours? O 0.9082 0.9 O 0.1 O0.0918

Q: Suppose the annual rainfall in the Southern California (in inches) is normally distributed with mean…

A: The mean is 10 and the variance is 25. The standard deviation is √variance=√25=5.

Q: Suppose that the population IQ scores are normally distributed with mean value 100.0 and standard…

A: For the normally distributed IQ scores, it is given that: μ=100.0 and σ=15.0. For n no. of sampled…

Q: A large population has a mean of 60 and a standard deviation of 8. A sample of 50 observations is…

A: GivenMean(μ)=60standard deviation(σ)=8sample size(n)=50

Q: A population has a standard deviation of 16. If a sample of size 64 is selected from this…

A:

Q: A population has a mean of 33 and a standard deviation of 5 . What is the probability that the…

A: Population mean=33Population standard deviation=5Sample size n=58

Q: For a population With a mean of 75 and a standard deviation of 12, what is the probability that a…

A:

Q: The numerical population of grade point averages at a college has mean 2.61 and standard deviation…

A: Given : Mean (µ)=2.61 Standard deviation (σ)=0.5 Sample size (n)=100

Q: A sample of 235 students was taken for an exploratory study. Each member of a random 35 of these…

A: Since the sample size is sufficiently large, and the population standard deviation is known, the…

Q: 3. Sodium content in organic cornflakes depends on fertilization method. A new fertilization method…

A: Null Hypothesis: A hypothesis which is tested for plausible rejection is called the Null Hypothesis…

Q: If a random sample of size 9 is drawn from a normally distributed population with mean 64 hours.…

A:

Q: If the mean height of a population of students is 68 inches with standard deviation 3 inches, what…

A: Given that      The mean height of a population of students is 68 inches with standard deviation 3…

Q: Suppose a population has a mean of 400 and a standard deviation of 24. If a random sample of size…

A: Given that, mean = 400 standard deviation =  24 n = 144

Q: Since a population has a mean of 73.5 and a standard deviation of 2.5, what is the probability that…

A: We have to find given probability.....

Q: Suppose samples of size 100 are drawn randomly from a normal population that has a mean of 20 and a…

A: Solution: Let X be the random variable. From the given information, X follows normal distribution…

Q: Suppose the age a student graduates from Salem State is Normally distributed. If the        mean age…

A: Given, mean = 23.1 Standard deviation = 3.1 We know, z = (x-mean)/std dev

Q: Suppose a population has a mean of 400 and a standard deviation of 24. If a random sample of size…

A:

Q: A population is normally distributed with mean 15 and standard deviation 2.6. Find the probability…

A:

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

A:

Q: population has a mean of 91 and a standard deviation of 10. A sample of 25 observations will be…

A: μ = 91σ = 10n = 25P(87.56<x¯<96.3) = ?

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

A: The population mean is 35. The population standard deviation is 7.5. The sample size is 50. We have…

Q: In a certain country, the average age is 31 years old and the standard deviation is 4 years. If we…

A:

Q: Suppose the random variable X had a population mean u=20 and a population standard deviation o=9. If…

A: Given that: X is normally Distributed with mean µ = 20.0 and standard deviation σ = 9.0 By using…

Q: suppose the walking step lengths of an adult males are normally distributed with a mean of 2.7 feet…

A: Given that  Mean=μ=2.7 Standard deviation=σ=0.3 Sample size=n=70 X~Normal(μ=2.7,σ=0.3)

Q: A sample of 36 is taken from a population that is normally distributed with mean 15 and standard…

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Q: For a normally distributed random variable, the population mean is 4.32 and population standard…

A:

Q: Suppose the average age of a Tulane undergraduate is 20 years with a standard deviation of 1.2…

A:

Q: A population of Gala apples has a mean m=0.40 lbs and a standard deviation s=0.16 lbs. For a sample…

A: Solution: Let X be the variable. From the given information, m=0.40, s=0.16 and n=20.

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

A: Solution: We are given:

Q: a sample size of 49 drawn from a population with a mean of 36 and a standard deviation of 15 for the…

A:

Q: Suppose the random variable X has a population mean u=20 and a population standard deviation o=9. If…

A:

Q: Suppose that heights of 10-year-old boys in the US vary according to a normal distribution with mean…

A: The objective of this question is to find the probability that the height of a randomly selected…

Q: uppose samples of size 100 are drawn randomly from a population that has a mean of 20 and a standard…

A: Given that, μ=20,σ=5,n=100 The mean and standard deviation of the sampling distribution of sample…

Q: A random sample of 40 computer chips is drawn from population and the weight of each recorded. A…

A: From the provided information, Mean (µ) = 0.8 Standard deviation (σ) = 0.1 X~N (0.8, 0.1) Sample…

Q: Suppose a population distribution has a mean  = 150 and a standard deviation s = 30, and you draw a…

A: Given: Mean = μ = 150 Standard deviation = σ = 30 n = 100

Q: In a study of life expectancy in a certain region, the mean age at death was 70 years, and the…

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.