1.3. A data set has a mean of 75 and standard deviation of 11.5. find the z- Score for x = 90? * %3D

Q: A sample has a mean of M =75 and a standard deviation of s = 15 . Find the z-score for each of the…

A: Given that, Mean (M) =75 Standard deviation (s) = 15

Q: 24. For a sample with a mean of M = 51, a score of X = 59 corresponds to z = .00. What is the sample…

A: Given that mean, M= 51 Score, X= 59  And z Score= 2  We've to find sample standard deviation. We…

Q: Suppose the mean and standard deviation of the GPAs at Loyola are  Xbar = 2.951; and s = 0.573…

A: Given, X_bar = 2.951 s = 0.573 z_score = -0.720

Q: 15. For a population with a mean of p= 45, a score of X 54 corresponds to z = 1.50. What is the…

A: The population standard deviation is obtained below: From the given information, the value of mean…

Q: For an exam with a mean of M = 74 and a standard deviation of s = 8, Mary has a score of X = 80,…

A: Concept: A z-score is known as the standard score that determines how much the data point deviates…

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

A:

Q: For two groups of observations the following results were available: Group I E(X-5) = 8 E(X- 5)? =…

A: Given that  Then we have to find combine mean and standard deviation of two groups:

Q: For the following, the data set has a mean of μ=100 and a standard deviation of σ=20. Find the…

A:

Q: The heights(in inches) of males in the U.S. are believed to be normally distributed with mean. The…

A: Given: Standard deviation (s) = 4.15 Sample size (n) = 25

Q: Suppose that for a certain population of college students, the mean GPA is 2.84 with a sta deviation…

A: Given that  U=eXV=e2X From the question 9,  EX=2.84σX=0.45

Q: A given distribution has a population mean, μ, of 107 and a population standard deviation, σ, of 12.…

A: Given information: μ=107 σ=12.  x=99

Q: has the value t = 2.24. If the standard deviation from the sample is 2.4, what is the mea %3D O 16 O…

A: The formula for test statistic is,

Q: 16. A data set of candy bag weights(lbs) has a mean of 8 and a standard deviation of 6.005,…

A:

Q: Observe the two nomal curves below and answer the following questions. 3. 5. 7 11 13 1. Which has a…

A: 1. A normal curve A have lower variance. Since, a normal curve's spread is minimum  and normal curve…

Q: Suppose the scores on an exam have a mean of 60 with a standard deviation of 10. If one student has…

A: Given,mean(μ)=60standard deviation(σ)=10

Q: Suppose a population is known to be normally distributed with à méáñ, µ, équal tó 144 and a standard…

A: Given that  A population is normally distributed Mean (μ) = 144 Standard deviation (σ)= 27   We know…

Q: Suppose the scores on an exam have a mean of 60 with a standard deviation of 10. If one student has…

A:

Q: Suppose the scores on an exam have a mean of 70 with a standard deviation of 10. If one student has…

A:

Q: 6.12 The average length of steel nails is 5 centime- ters, with a standard deviation of 0.05…

A: GivenMean(μ)=5 cmsstandard deviation(σ)=0.05 cms

Q: A set of data is found to have a sample standard deviation of 25. Suppose 9 were added to each of…

A: Given: s=25 9 is added to each of the values.

Q: For a population with a standard deviation of o = 12, a score of X = 44 corresponds to z = -0.50.…

A:

Q: The blue, red, and yellow curves all have a mean of 0, while the green curve has a mean of -2. pra…

A:

Q: 6.21. For two observations 'a' and 'b', show that standard deviation is half the disto between them.

A:

Q: The mean annual income for adult women in one city is $28,520 and the standard deviation of the…

A: Given sample mean(x) = 28520standard deviation(σ) = 5000sample size(n) = 105

Q: A. The scores of students in the midyear examination for Mathematics has a mean of 32 and a standard…

A: Given that Mean = 32, SD = 5 Find the Z-scores for 1. x = 37 2. x = 22 3. x = 33 4. x = 28 5. x = 30

Q: 3. The average birthweight of babies tends to be about 3.5 kg and has a standard deviation of 0.5…

A: Given,   Mean = 3.5 standard deviation = 0.5   The objective is to find the required proportions.…

Q: Suppose the weights of 3-month-old babies are normally distributed-baby boys with a mean of 14.4…

A: For baby girls, μ=12.8σ=1.7

Q: Suppose the scores on an exam have a mean of 60 with a standard deviation of 10. If one student has…

A:

Q: A population has a mean of u=50 and a standard deviation of O=20 A. Would a score of x=70 be…

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

Q: Assume blood-glucose levels in a population of adult women are approximately normally distributed…

A: The normal distribution  in the center are generally denser and basically less denser at tails.…

Q: Suppose that, for a certain exam, a teacher grades on a curve.   It is known that the mean is 65…

A: According to Empirical rule, middle 68.2% of students receive C. Nreceive C=0.682×25…

Q: Suppose the data have a bell-shaped distribution with a mean of 30 and a standard deviation of 5.…

A: Given data ,u=30σ=5

Q: Assume that the weight of 1-year-old girls in the USA is normally distributed with Mean = 9.5 kg,…

A: Note: Hi, thank you for the question. As per our company guideline we are supposed to answer first…

Q: For a population with mean 80 and standard deviation 10, what is the X value corresponding to z =…

A:

Q: A population of scores has a mean of μ X = 56. Within this population, a value of X = 68 corresponds…

A: Given: Population mean, μX=56 Observed Value, x = 68 Standardized Normal Value, z = 2.00

Q: Let, X has a normal distribution with a mean of 95 and a standard deviation of 12. The z-value…

A:

Q: In a population distribution, a score of X = 28 corresponds to z = −1.00 and a score of X = 34…

A: Where, For X=28 & z=-1.00 For X=34 & z=-0.50

Q: In a population with m=60, a score of X=58 corresponds to a z-score of z=-0.50. What is the…

A:

Q: Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(z…

A: Solution-: Given: Z are normally distributed with mean of 0 and a standard deviation 1  If…

Q: A data set has a mean of x̅= 6.8 and a standard deviation of 1.9. Find the z- score for each of the…

A: Given: mean of data x¯=6.8 Standard deviation is σ=1.9 Formula used: Here we shall use the formula…

Q: For a sample with a standard deviation of s = 8, a score of X = 42 corresponds to  z = –0.25 what is…

A:

Q: 1. A distribution of exam scores has a mean of µ = 78. a. If your score is X = 70, which standard…

A:

Q: 1) The speed of 100 cars was measured on a road with a speed limit of 90 km/h. The data was found to…

A: We have to find probabiities..

Q: 30. The distribution of weights for 12-month-old baby girls in the US is ap- proximately normal with…

A: we have to find percentile value......

Q: Suppose the scores on an exam havea mean of 70 with a standard deviation of 10. If one student has a…

A: Mean = 70 Std dev = 10

Q: 2. Imagine the daily high temperature in Toronto was recorded every day for 14 days in January, and…

A: As we are authorized to answer only question with maximum 3 subparts for each question and that you…

Q: Please help

A: This is how a normal distribution graph looks. Here given that mean=100 and standard deviation=14

Q: Calculate the percentage of women who measures (a) more than 1.70 m. (b) between 1.66 and 1.58 m.…

A:

Q: Under what circumstances would a score that is 15 points above the mean be considered an extreme…

A:

Q: 15. For a sample with a standard deviation of s = 8, a score of X = 65 corresponds to z = 1.50. What…

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.