10. Suppose a normal distribution has a normal distribution with a u = 25 and a standard deviation o = 5. Between what values of x do 95% of the values lie? a. 20 and 30 b. 35 and 45 C. 15 and 25 d. 15 and 35

Q: coʻ10. Mean deviation may be calcururea rem hir 'i. rnmetic mean or the median or the mode. Which of…

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Q: 1. A normal distribution has a mean m = 58 with s= 2. What is the probability of selecting an…

A: As per our guidelines we are suppose to answer only one question1)GivenMean(m)=58standard…

Q: 3. Suppose a distribution has a mean u = 10 and standard deviation o = 12. What is the value of x if…

A: Given data isMean(μ)=10standard deviation(σ)=12z=+1.50

Q: 1. A survey by the National Retail Federation found that woman spend on average R146.21 on a…

A: Given,mean(μ)=146.21standard deviation(σ)=29.44

Q: A certain hurricane database extends back to 1851, recording among other data the number of major…

A: A random variable is a variable whose value is unknown or a function that assigns values to each of…

Q: Scores on the SAT form a normal distribution with a mean of u = 500 with a 100. If the state college…

A: Normal distribution

Q: 1. Suppose the scores for a certain test follow a normal distribution with a mean of 77 and a…

A: Certain test scores follow a normal distribution.Mean, Standard deviation, The top of scores are…

Q: For bone density scores that are normally distributed with a mean of 0 and a standard deviation of…

A: Given that the normal distribution has the mean=0 and standard deviation=1. Suppose, X denotes the…

Q: 4. A company pays an average of Php 100.00 per hour with a standard deviation of Php 15.00. If the…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: 1. Which of the distributions displayed in the dot plots below has the highest standard deviation…

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

Q: 5. If the variance equal 16, the standard deviation equal: OA. 4 OB. 10 O C. 5 OD. 3 O E.2 6. If the…

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Q: A random sample of 10 universities gave the following data on student-to-faculty ratio and…

A: 3a) Let us define X as S/F ratio and Y as graduation rate. Excel Procedure: Enter X and Y in…

Q: 3. For the following distribution of quiz scores, if a score of X = 4 or lower is a failing grade,…

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Q: Consider the following information. SSTR = 6750 Ho:µ1 = µ2= 43 = 4 SSE = 8000 Ha: At least one mean…

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Q: Given that the mean of a data set is 20, and the standard deviation of this data set is 8, then what…

A: Solution : Given : μ = 20             σ = 8             X = 40 The value of Z-score can be computed…

Q: 2. Suppose a distribution has a mean µ = 6 and standard deviation o = 2. What is the value of x if…

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Q: 100 and o = 10, what X values separate the 2. For a normal distribution with u middle 95% from the…

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Q: For a normal distribution with a mean of μ = 70 and a standard deviation of σ = 10, find the…

A: (a) Obtain the proportion of the population scores greater than 80. The proportion of the population…

Q: 1. Given the distribution whose mean is 20.5 and whose standard deviation is 4. Find the Z-score for…

A: Given the distribution with mean is 20.5 and standard deviation 4. We need to find the Z-score for…

Q: For a normal distribution with a mean of μ = 100 and a standard deviation of σ = 15, what is…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 15 X~N (100, 15)

Q: Use z scores to compare the given values. In a recent awards ceremony, the age of the winner for…

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: An instructor of statistics claims that students in his section will score higher than the students…

A: The random variable is score. There are two independent samples which are section and colleague’s…

Q: 12. A normal distribution has a mean of µ = 70 and a standard deviation of o = 8. For each of the…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: 5.4. For a normal distribution where the mean is 50 and the standard deviation is 10, what…

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Q: 1. The smaller the spread of scores around the arithmetic mean, a. the smaller the coefficient of…

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

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 31 beats…

A: Given: Lowest pulse rate is 31 beats per minute.            Mean of the listed pulse rate is x=79.…

Q: 25. A population has u = 30 and o = 10. If 5 points are added to each and every score in the…

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Q: B. Solve the following problems. 1. The mean of the students in Grade 1 section Newton is 125 cm and…

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Q: 50. using this normal quantile plot, can we treat this as a sample from an aPproximately normal…

A: Solution:  Yes We can treat the sample from an approximately normal Population.

Q: One graph in the figure represents a normal distribution with mean μ = 6 and standard deviation o=3.…

A: Solution-: For one variable: μ=6,σ=3 For second variable: μ=16,σ=3 Both graph represents normal…

Q: One graph in the figure represents a normal distribution with mean u=9 and standard deviationo = 3.…

A: From the given density plot of two Normal distribution, we can see that A follows Normal…

Q: Suppose a population is known to be normally distributed with a mean, m equal to 144 and a standard…

A: We have given that,  Population is known to be normally distributed with mean(mu) = 144 and…

Q: What percentage of a normal distribution is within 2 standard deviation of the mean? A. About 50 %…

A: Normal distribution has a distribution curve with bell shape and this curve is symmetric about its…

Q: The scores on a test are normally distributed with a mean of 140 and a standard deviation of 28 What…

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Q: 1. In a set of scores, u = 300 and a = 65.5. Find the scores one, two, and three standard deviations…

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Q: Suppose a set of data has mean u = 29 and standard deviation o = 1.2. (Give answers accurate to…

A: Given that.   X~N( μ , ?^2 )   μ=29.     , ?=1.2   Z-score =( x - μ )/?   NOTE:- According to…

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Step 1:Step 2: Step 3: Step 4:

Q: Which of the following statements is true? a. The sum of the deviations from the mean is always…

A: The sum of the deviations from the mean: ∑(Xi-X) = ∑Xi-∑X= ∑Xi-nX=  ∑Xi-n∑Xin= ∑Xi-∑Xi= 0 The sum of…

Q: deviation of 50 feet. Let X = distance in feet for a fly ball. Find the 80th percentile of the…

A: Solution

Q: A normal distribution has a mean of u = 80 with a = 20. What score separates the highest 15% of the…

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Q: 11. Calculate Mean deviation and its coefficient from A.M. and Mode from the following data. 8…

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Q: 4. Which proportion of a normal distribution is located between the mean and z = +1.40? 5. A…

A: The proportion of a standard normal distribution which is located between mean and z = 1.40 is given…

Q: 2.The masses of durians in a farm are normally distributed with a mean μ and a standard deviation,…

A: Mass of percentages of durians less than 400 g is 15.87%Mass of percentages of durians more than 500…

Q: Could someone give me and explanation on how to go about solving this?

A: Let At X = 64 The z-score is, The z-score is positive, so the body is right to the score The value…

Q: 10. The following dot plot shoes the test scores for 10 students on a unit exam. Which shape most…

A: Option c is correct.  A normal distribution comes with a perfectly symmetrical shape. This means…