Use the fact that you have a distribution with a mean of M = 20 and a standard deviation of s = 2 to answer the following items:   A- Find the z-scores that correspond to the following X-values X = 14 X = 30   B. Find the X-values that correspond to the following z-scores z = -1.25 z = 0.75

Q: The mean IQ score for 1900 students is 105, with a standard deviation of 15. Assuming the scores…

A: Follow the procedure given below.

Q: Find the​ z-score for the value 87​, when the mean is 82 and the standard deviation is 8. A. z=−0.96…

A: Given,mean(μ)=82standard deviation(σ)=8and the value(x)=87

Q: A sample has a mean M = 55. In the sample, a score of X = 48 corresponds to z = -1.20. What is the…

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Q: The heights of adult men in America are normally distributedwith mean of 69.3 inches and a standard…

A: Norma distribution is a continuous probability distribution. Standard normal distribution or…

Q: On an exam with a mean = 70, you have a score of X = 65.  Which of the following values for the…

A: Given Information Mean µ = 70 X = 65 Higher the value of z, Higher will be the position

Q: Answer the following questions given that the mean weekly quiz score for a class is 72 with a…

A: Given data,Mean μ=72sd     σ=8P(70<X<90)=?

Q: The time (X) to complete a standardized exam is approximately normal with a mean of 70 minutes and…

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Q: find the z-score for the value 69, when the mean is 96 and the standard deviation is 5.

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Q: Find the​ z-score for the value 55​, when the mean is 79 and the standard deviation is 5.

A: The z score indicates how many standard deviations that a data points away from the mean. It can be…

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

A: Given information Mean μ = 70 Standard deviation σ = 8

Q: Q2: b) For a mean of 70 and a standard deviation of 8, find standardized score for a value of 80.…

A: Givenmean(μ)=70standard deviation(σ)=8x=80

Q: find the z-score for the value 95, when the mean is 77 and the standard deviation is 2.

A: Given, mean=77 standard deviation=2 find the z-score for the value 95

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

A: We have given that x̅ = 77 s = 18.4

Q: Use the normal distribution of IQ​ scores, which has a mean of 100 and a standard deviation of 18​,…

A: Given that, Mean = 100 Standard deviation = 18

Q: The length of pregnancies are normally distributed with a mean of 266 days and a standard deviation…

A: Assume a random variable X, that defines the length of pregnancies.

Q: Assume that the mathematical scores on the standardized test are normally distributed with a mean of…

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Q: Given the mean is 62 and the standard deviation is 8, find the z-score that corresponds to each of…

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Q: Answer and show the solution. Assuming that the ages follow normal distribution with mean of 35,…

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Q: In a Science test, the mean score is 42 and the standard deviation is 5. Assuming the scores are…

A: As per bartleby guidelines only 3 subparts are answered please upload the rest separately. The mean…

Q: indicate whether the body is to the right or left of the score and find the proportion of the…

A: Given :  A normal distribution has a mean of μ = 30  standard deviation of σ = 12.

Q: If the distribution of weight of newborn babies in Maryland is normally distributed with a mean of…

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Q: The scores of students on a standardized test are normally distributed with a mean of 300 and a…

A: X~N(μ=300, σ2=402) (A) P(220<X<380)= ?  (B) P(X<260)= ? (C) P(X>a)=0.25 a= ?  Note: This…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 37 beats…

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Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 35 beats…

A: Since, we are allowed to answer three sub-parts at a time so we are answering the first three as you…

Q: Find the z-score for the value 86, when the mean is 61 and the standard deviation is 1. O A. z= -…

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Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 33 beats…

A: Given that, (a) The difference between the pulse rate of 33 beats per minute and the mean pulse…

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: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 33 beats…

A: The question is about std. normal distribution Given : Lowest pulse rate ( x ) = 33 beats per minute…

Q: Answer the following questions using the z-score chart( attached below) or by using a spreadsheet.…

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

Q: On a nationwide math test, the mean was 58 and the standard deviation was 4. If Roberto scored 70,…

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Q: Can you assist me in answering this? (this is not graded but, rather, an excersice conducive to…

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Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 35 beats…

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Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 39 beats…

A: It is given that the mean is 78.0 and the standard deviation is 20.7.

Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 37 beats…

A: Given x=73.0 beats per​ minute, and their standard deviation is s=20.5

Q: Use the normal distribution of IQ​ scores, which has a mean of 130 and a standard deviation of 16​,…

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Q: For a data set of the pulse rates for a sample of adult​ females, the lowest pulse rate is 37…

A: From the provided information, Pulse rates of adult​ females in sample = 37 Mean of listed pulse…

Q: Find the z-score for the value 91, when the mean is 58 and the standard deviation is 3 O A. z=11.00…

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Q: After 6 points have been added to every score in a sample, the mean is found to be M = 70 and the…

A: Given Data: After 6 points have been added Mean=70 SD(X)=13   Let Y be the variable after adding the…

Q: After 3 points have been added to every score in a sample, the mean is found to be M= 83 and the…

A: After 3 points have been added to every score in a sample, the mean is found to be M= 83. The value…

Q: Ten percent of the world's population is left-handed. A researcher claims that left-handed…

A: Given: n=900 and p=9%=0.09. a) The mean of p^ is μp^=p=0.09

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 33 beats…

A: Hi! Thank you for the question, as per the honor code, we are allowed to answer three sub-parts at a…

Q: For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 38 beats…

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Q: In a Calculus test, the mean score is 42 and the standard deviation is 5. Assuming the scores are…

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

A: Note: As per our policy we can answer only three sub parts. kindly repost the remaining sub parts.…

Q: On an exam with u = 52, you have a score of X = 56. Which value for the standard deviation would…

A: We have given that µ = 52 x = 56 z-score formula is given as  z =( x - μ )/σ

Q: The students at a college all take a standardized test scored on a scale from 0 to 100 points. The…

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Q: For a data set of the pulse rates for a sample of adult​females, the lowest pulse rate is 33 beats…

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

Q: Sixteen percent of the world's population is left-handed. A researcher claims that left-handed…

A: a) mean (p) = 0.16 , q = 1 - 0.16 = 0.84 , n =2100

Q: The teacher in a kindergarten school measures the height of her students. If the heights were…

A: Given: Population mean μ=112 Population standard deviation σ=3.25 z score = x-μσ x is the observed…

Q: Use the normal distribution of IQ​ scores, which has a mean of 75 and a standard deviation of 11​,…

A: GivenMean(μ)=75standard deviation(σ)=11