how many inches is the lower bound? how many inches is the upper bound?

Q: Suppose that the distance of fly balls hit to the outfleld (in baseball) is normally distributed…

A: X follows a Normal distribution with mean = 257 and S.D = 44 Then z=(x-mean)/SD = (x-257)/44…

Q: Assume that a distribution of 10000 scores is normally distributed with a mean of 90 and a standard…

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Q: A population has a mean u=87 and a standard deviation o = 12. Find the mean and standard deviation…

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Q: Find the z-score for the value 62, when the mean is 56 and the standard deviation is 2. O A. z=3.00…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: 1 A population has a mean μ = 87 and a standard deviation = 20 mean and standard deviation of a…

A: A population has a mean μ=87 and a standard deviation σ=26Then we'll find the sampling distribution…

Q: A population has a mean μ = 88 and a standard deviation a=7. Find the mean and standard deviation of…

A: The mean is 88 and the standard deviation is 7.

Q: A population has a mean u = 70 and a standard deviation o = 30. Find the mean and standard deviation…

A: Mean = 70 Standard deviation = 30

Q: A population has a bell-shaped distribution with a mean of 90 and a standard deviation of 8. Which…

A:

Q: Lengths (in inches) of trout in a stream are normally distributed with a mean of 11.8 and a standard…

A: (a) Obtain the top 30 % of the trout lengths. The top 30 % of the trout lengths is obtained below as…

Q: Assume that a distribution of 10000 scores is normally distributed with a mean of 90 and a standard…

A:

Q: What is the variance if the standard deviation is 1? A, 0.1 B, 1 C. 5 D. 100

A: Solution: given standard deviations of random variable x is sd(x)=1  Then varience of x will be?…

Q: Use z scores to compare the given values.   The tallest living man at one time had a height of 221…

A:

Q: The heights of women follow a normal distribution with a mean height of 63.7, and a standard…

A: The independent variable is the height of women. The height of women follows normal distribution.…

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: In a normal distribution, 99.7% of the data fall within how many standard deviations of the mean? A.…

A: Solution-: In a normal distribution, 99.7% of the data fall within how many standard deviations of…

Q: Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2 million in a…

A: Given that  Major league baseball salaries averaged $3.26 million with a standard deviation of $1.2…

Q: A population has a mean p = 81 and a standard deviation o = 25. Find the mean and standard deviation…

A: We have ro find value of mean of sampling distribution.

Q: The mean age of all 2530 students at a small college is 22.3 years with a standard deviation of 3.5…

A: The population size is 2,530.

Q: For a population, a deviation score is computed as X – σ.

A: What is Deviation score ? Deviation score is basically a degree of score from which a raw score is…

Q: The mean length of a human pregnancy is 265​days, with a standard deviation of 9 days. Use the…

A:

Q: The population mean annual salary for plumbers is $49,000.  A random sample of 25 plumbers is drawn…

A: We have given that Mean(µ) = 49000Standard deviations (σ) = 5800n = 24

Q: A group of male basketball players has a mean height of 79 inches and a standard deviation of 1.7…

A: Introduction: Denote X as the height of a randomly chosen male basketball player. A group or sample…

Q: According to a research​ institution, the average hotel price in a certain year was ​$97.27. Assume…

A:

Q: The heights of 100 high school students are measured, with a mean of 175 cm and a standard deviation…

A:

Q: A population has a mean u=71 and a standard deviation a=20. Find the mean and standard deviation of…

A:

Q: These babies will have a mass of less than how many pounds?

A: Given that masses of newborns are normally distributed with a mean of 6.6 lbs. and a standard…

Q: In Country​ A, the population mean height for​ 3-year-old boys is 39 inches. Suppose a random sample…

A: From the provided information, Sample size (n) = 15 Sample mean (x̄) = 38.6 Standard deviation (s) =…

Q: At a computer manufacturing company, the actual size of computer chips is normally distributed with…

A:

Q: A set of data items is normally distributed with a mean of 60. Convert the data item to a z -score,…

A: Solution: z-score for given data item is 1.

Q: Suppose that the distance of fly balls hit to the outfield (in baseball) is normally distributed…

A:

Q: A large group of students took a statistics test.   The mean score, from the scale of 100, was  74.5…

A: Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Q: The symbol oz represents the standard deviation of a sample of size n. True O False

A: Answer : B. False

Q: A large group of students took a physics test and the final grades have a mean of 70 with a standard…

A: The random variable X follows normal distribution. We have to find the percent of students scored 70…

Q: A successful basketball player has a height of 6 feet 6 ​inches, or 198 cm. Based on statistics from…

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Q: A population has a mean u= 85 and a standard deviation o = 16. Find the mean and standard deviation…

A: List of formulae : Mean of sampling distribution of sample mean ( x¯ ) : μx¯  = μ Standard deviation…

Q: In a Science test, the mean is 46 and the standard deviation is 4. Assuming the scores are normally…

A:

Q: The mean length of a human pregnancy is 265 days, with a standard deviation of 14 days. Use the…

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Q: If the students make one more measurement using the same equipment and procedures, what is the…

A:

Q: A population has a mean u = 87 and a standard deviation o= 21. Find the mean and standard deviation…

A: Givenmean(μ)=87standard deviation(σ)=21sample size(n)=249

Q: For a sample with a standard deviation of s = 12, a score of X = 42 corresponds to z = –0.50. The…

A: given data  s = 12 x = 42 z = -0.50 sample mean (M) = ?

Q: A grocer finds that the cantaloupes in his store have weights with mean 0.7 kg and standard…

A: Given, Mean weight of cantaloupes is 700 gm. Standard deviation is 53 gm

Q: A normal distribution has mean of 105 and a standard deviation of 10. Find the probability that a…

A: Solution :- Given :-Mean = μ=105Standard Deviation = σ=10Atmost means all probabilities smaller than…

Q: The instructor takes a random sample of size from the population data and obtains the following…

A: We have given that,  The data set is,  405, 385, 495, 385, 555, 470 Then,  We will find the sample…