You make a 1985 on your SAT. If the mean for the SAT is 1575 and the standard deviation is 400, what is your z-score? O a) z = 1.025 O b) z = -1 O c) z = -1.025 O d) z = 1

Q: On a standard measure of hearing ability, the mean is 300 and the standard deviation is 20. Give the…

A: Given data ,Mean u=300S.D σ=20

Q: The height of an adult male is known to be normally distributed with of mean of 69 inches and a…

A:

Q: A bottled water distributor wants to d nationally known water bottling com standard deviation of the…

A: Solution

Q: In the population, the average IQ is 100 with a standard deviation of 15.A team of scientists wants…

A:

Q: The mean and standard deviation for an exam was as follows: μ=82, σ=7.0 What percent of the class…

A:

Q: Given that the mean for a data set is 24.8 and the standard deviation is 2.3, find the z-score of…

A:

Q: A health care professional wishes to estimate the birth weights of infants. How large a sample must…

A: we have to find sample size for given data...

Q: The heights of American adult males are normally distributed with a mean of 177 cm and a standard…

A: We need to get the data by using formula P(mean-standardDeviation< x <  mean+standardDeviation…

Q: The scores on a mathematics exam have a mean of 78 and a standard deviation of 8. Find the x-value…

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Q: For the test described in Scenario A, 32 apartments were measured and the sample mean found to be…

A: Given that  Sample size n =32 Sample mean =1237 Standard deviation =45

Q: Suppose that the scores on a statewide standardized test have a bell shape distribution with a mean…

A: Given that Mean = 79,s.d=6 (b) P(X>97 )=? (c) P(X<73) =? (d)P(61<x<85) =?

Q: z-score of

A: Given that  Value (x) = 27 Mean (μ) = 24 Standard deviation (σ) = 2   We know that  Z=(x-μ)σ

Q: The prices of all college textbooks follow a bell- shaped distribution with a mean of $100 and a…

A:

Q: AC mei neights n a mean o a standard deviation of 2.8 inches. Fin man with a z-score of 3.75 (to 4…

A: Let X be the hight of men from Normal distribution with mean (μ) = 69.0, standard deviation (σ) =…

Q: A normally distributed population has a mean of 88 and a standard deviation of 10. When a sample of…

A: Here the given population mean is 88 and population standard deviation is 10.

Q: The results of a calculus exam are normally distributed with a mean of 76 and a standard deviation…

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Q: What is the average score for those who are willing to rise to the challenege with the standard…

A: Here X takes values 1, 2, 3, 4, 5 with following frequencies The average score is calculated using…

Q: Find the standard deviation for the given data n- 48, Σίx, = 1620 , Σix? = 6640ο , ΣΧ-180 %3D O a.…

A: Given that, n = 48∑fixi=1620∑fixi2=66400∑xi=180

Q: uted with a mear ndard deviation of 10 centile of the item p a. -0.13 а. b. 0.13

A: Given Data Population Mean,μ = 42.0 Population Standard Deviation,σ = 10.0

Q: What is the standard deviation of the following set of scores: 1, 1, 1, 1, 1 (A) -1 B0 D

A: Given scores is x=1,1,1,1,1sample size(n)=5

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: Find the standard deviation, s, of sample data summarized in the frequency distribution table below…

A: Given: Interval Frequency 30-39 1 40-49 3 50-59 8 60-69 3 70-79 15 80-89 31 90-99…

Q: The formula for a z-score is z = e, where x is the value, u is the mean, and a is the standard…

A: It is needed to find whether the given statement regarding z score is true or false.

Q: For data with a bell shaped about of the data lie within three standard deviation of the mean 68%…

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Q: What is the value of k?   What is the standard deviation?

A: Here use basic of discrete probability distribution

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: We have given that mean = μ = 50standard deviation = σ = 8 z = 0.25

Q: The standard deviation of a population of 10000 volume is 62cm. In the case of "non-refundable…

A: The formula for sample size for a given confidence interval and population standard deviation is:

Q: On an exam, Tom scores 12 points above the mean and has a z-score of z = +2.00. The standard…

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Q: d. Compute the first and third quartiles. e. Which measure, the mean or median, is a better measure…

A: The data can be sorted in ascending order as: 28, 29, 30,39, 41, 48, 48, 49, 51, 62

Q: Use the output provided in the formula sheets folder. Using the reduced model, what is the value of…

A: Based on given output we have to determine the estimate of standard deviation i.e S

Q: The scores on a mathematics exam have a mean of 73 and a standard deviation of 9. Find the x-value…

A: We have given that  X~N(mu,sigma^2) mu=73  , sigma = 9  ,Z-socre =5.019 Z-socre =(x-mu)/sigma

Q: In a statistics class of 150 students, the mean and standard deviation of scores was 70 and 5,…

A: Given: The total number of students are N=150. The mean scores of students in a statistics class is…

Q: Use the Empirical Rule to answer the following questions. a. The mean is b. The standard deviation…

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

Q: The standard deviation of the given data is A. 1.4495 B. 1.4597 C. 2.1011 D. 2.1307

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Q: On a construction site, the amount of dirt scooped by a forklift machine is normally distributed…

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Q: de . Find the standard deviation of the observations 5, 11, 18, 25 and 41, using muill

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Q: On an exam with u=52 ,a person scores x=56.Which value for the standard deviation would give this…

A: We have given that,  Mean = 52 , X = 56 , We have to find z-score at  (1) sigma = 2  (2) sigma = 4…

Q: A survey of 1000 women ages 20 to 30 found that their heights were normally distributed, with a mean…

A: (a) From the given information The mean is 65 in. and a standard deviation is 2.5 in. The mean x¯ of…

Q: P(x) 0.186 1 0.362 0.295 3 0.128 0.027 4 5 0.002

A: From the provided information, The mean for the numbers of sleepwalkers in group of five can be…

Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: In question, Given that mu=50, Sigma= 8 and z score = -0.50 Then we'll find the value of raw score.…

Q: In an examination, the mean grade is 81 and the standard deviation is 6. Find the Z-score of the…

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Q: Which of the following answers best describes ways of interpreting and understanding the values of…

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Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A:

Q: The scores on a mathematics exam have a mean of 70 and a standard deviation of 6. Find the x-value…

A: We have given that  Mean = 70 Standard deviation = 6 Z-score, z = 5.19

Q: In a standardized IQ test, the mean score is 100 and the standard deviation is 15. According to the…

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Q: Find the area, square unit, to the nearest thousandth of the standard deviation between the given…

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Q: For a population with mean of 50 and standard deviation of 8, what is the raw score that corresponds…

A: GivenMean(μ)=50standard deviation(σ)=8z=2.50

Q: Select the correct answer below and, if necessary, fill in the answer boxes within your choice. A.…

A: p = 0.67 n =40

Q: The three data sets have the same mean and range, but is the variation the same? Prove your answer…

A: For all the parts, it is given that, x=5+7+9+11+13+15+177=777=11

Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.