Z- score of 3 for a data value x represent? X score of -1 for a data value x represent? = 68.73 centage of the scores fall above 50? s.d. = 9.03 Find 50 and 79? a of the standard normal distribution between z=- ken two quizzes in her history class. She scored 15 uiz, for which the mean of all scores was 12 and the Page 97 of 100

Q: Rent for two-bedroom apartments in Davis, CA, follow a normal distribution with mean of $2,200 and…

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Q: 1 Women's Heights Suppose college women's heights are approximat distributed with a mean of 65…

A: Given that.   X~N( μ , ?^2 )   μ=65    , ?=2.5   Z-score =( x - μ )/?

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A: Since you have posted a question with multiple subparts, we will solve the first three complete…

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A: Note: As per the guidelines, solution to three subparts are provided. Given information: Population…

Q: IQ scores are standardized to produce a normal distribution with a mean of µ = 100 and a standard…

A: Solution: Let X be the IQ score. From the given information, X follows normal distribution with mean…

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A: Given: We need to determine which is not a characteristic of normal distribution.

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…

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A: Given that : Score is given  Z = -1. 3  and z = -0. 7  By using the standard normal distribution we…

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A:

Q: The average score for games played in the NFL is 22.4 and the standard deviation is 8.9 points. 13…

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Q: The test scores for the analytical writing section of a particular standardized test can be…

A: Let "X" be the test scores for the analytical writing section. Refer Standard normal…

Q: The average score for games played in the NFL is 22.4 and the standard deviation is 9 points. 8…

A: d. The 71th percentiles for the mean score for this ample size is obtained below: From the given…

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Q: Birna is studying the average height of male and female antelopes. The height of antelopes has been…

A: Given, Claim: The average height differs between the sexes. The test is two tailed. Given test…

Q: a city's hotel rates (x) follow a normal distribution with mean $115 and standard deviation $21. a)…

A: We have given that  mu= 115 , sigma =21  Row score  X=140 Z-score =(x-mu)/sigma

Q: 1. Sleeping Times of Medical Residents: The average time spent sleeping (in hours) for a group of…

A: Given: x: the shortest time spent sleeping  μ=6.1σ=1.0

Q: For a normal distribution: a. What z-score separates the highest 35% from the rest of the scores? b.…

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

A: Let X denote the scores on the SAT and it follows normal distribution with mean of μ=500, and…

Q: The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally…

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Q: 1. A normal distribution has a mean of 54 and a standard deviation of 18. What is the median? (Enter…

A: Given  X~ N(μ=54, σ2=182)

Q: a. State the approximate distribution of X. X ~ ___(__________,___________) b. Draw and label a…

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Q: Which chi-square distribution would be closest to a normal distribution A distribution with 15 12 3…

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

A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: the distribution is normally distributed with standard deviation 1 feet. Let X be the height of a…

A: Solution Given That, The mean height of an adult giraffe is 17 feet. Suppose that the distribution…

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

A: Obtain the percentage of area is above score of 47. The percentage of area is above score of 47 is…

Q: What proportion of observations have values less than 7? Round to fourth decimal

A: From the provided information,    Mean of normal distribution µ=11.9 And standard deviation is σ=2.9…

Q: The average score for games played in the NFL is 20.5 and the standard deviation is 9 points. 8…

A: (b) Determine the distribution of ΣX. The distribution of ΣX is determined below as follows :

Q: The IQs of individuals form a normal distribution with mean = 100 and s = 15. A. What percentage of…

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Q: In a normal distribution the z score for the mean equals All the mentioned options O b. 0 O c. The z…

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Q: A normal distribution has mean 58.4 and standard deviation 4.45. Find the data value corresponding…

A: Mean = 58.4 Standard deviation = 4.45 Z score = -3.82

Q: Consider a normal distribution with mean= 500 and SD= 70  (this was the original SAT…

A:

Q: The average amount of money that people spend at Don Mcalds fast food place is $7.3500 with a…

A: Given: The average amount of money spent at Don Mcalds fast food place is $7.3500 and standard…

Q: You are interested in how uniform the lengths of socks are that are produced at a factory. You…

A:

Q: A normal distribution of scores and z-values corresponding to each of the following values: a) A…

A: Given that A normal distribution of scores has a standard deviation of 10 Standard deviation (σ) =…

Q: In a job fair, 5,000 applicants applied for a job. Their mean age was found to be 28 with a standard…

A:

Q: Use the normal distribution of IQ scores, which has a mean of 75 and a standard deviation of 12, and…

A: Given: μ = 75 σ = 12 Formula Used: Z-score = X-μσ

Q: n a normal distribution, what percent of scores lie between the mean and a z-score of +1.00?.

A: Let, X be a random variable which follows Normal distribution. So,  Mean(μ) = 0 Standard…

Q: A normal distribution has mean 63.2 and standard deviation 2.57. Find the data value corresponding…

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Q: Among freshmen at a certain university, scores on the Math SAT followed the normal curve, with an…

A: The answer is attached below,

Q: The average score for games played in the NFL is 21.9 and the standard deviation is 9.3 points. 49…

A: Solution: a. Let X be the score for games played in the NFL. From the given information, X follows…

Q: Given a normal distribution with a mean of 50 and a standard deviation of 7 assign the values to the…

A: The 68-95-99.7% (Empirical) Rule: For a normal distribution, the empirical rule (68-95-99.7% Rule)…

Q: The average time to run the 5K fun run is 20 minutes and the standard deviation is 2.4 minutes. 41…

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Q: kshe The height of women ages 20-29 is normally distributed, with a mean of 64.6 inches. Assume o =…

A: Obtain the probability of randomly selecting 1 woman with a height less than 66.4 inches. The…

Q: The average score for games played in the NFL is 21.2 and the standard deviation is 9.3 points. 17…

A: From the given information for part e and f we have x̅~ N (µx̅ , σx̅ )= N(21.2, 2.2556)

Q: The mean height of an adult giraffe is 17 feet. Suppose that the distribution is normally…

A:

Q: The average score for games played in the NFL is 20.9 and the standard deviation is 9.3 points. 15…

A: Xi ~N( 20.9, 9.32), for all i=1,2,...,15. a.)  Then, we havex=∑i=115xi15~N(20.9, 9.3215)≡N(20.9,…

Q: Use the normal distribution of IQ scores, which has a mean of 85 and a standard deviation of 11, and…

A: The following information has been provided: μ=85, σ=11\mu = 85, \text{ } \sigma = 11

Q: The mean height of an adult giraffe is 18 feet. Suppose that the distribution is normally…

A: Let us suppose that the distribution is normally distributed with the mean height of an adult…