What position [how many standard deviations] in the distribution corresponds to z-score of z= -1.00?

Q: what will be the value of X at the z score =-3 given, mean=10 and standard deviation =2?

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: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: The Z-score of is given by, Z-score = Actual Value - MeanStandard Deviation

Q: Mean 255, x is 230 and z score is -2 find standard deviation

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Q: What is the corresponding Z- score, mean is 110, standard deviation is 8 and x is 90

A: In question, We'll find the Z - score for mean 110, standard deviation 8 and x = 90. The solution is…

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Solution: Let X be the time a patient of a medical center spends waiting for an appointment. From…

Q: What percent of data points fall in the range of z=-1.5 and z=1.5 standard deviations of the mean

A: From the provided information, The range is between z = -1.5 to z = 1.5

Q: What is the standard deviation on the graph ?

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Q: A succesful basketball player has a height of 6 feet 4 inches or 193 cm based on statisc from data…

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Q: what will be the value of X at the z score =-2.5 given, mean=45 and standard deviation =5?

A: Mean = 45 Standard deviation = 5  Z score =-2.5 We have to find X score  for given data...

Q: A set of test papers is normally distributed with a standard deviation of 5. If Riley scored an 83…

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Q: 500 freshmen at Crescent High School took an algebra test. The scores were distributed normally with…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

Q: The scores on a mathematics exam have a mean of 71and a standard deviation of 8. Find the x-value…

A: Let X denote the scores on a mathematics exam and it follows normal distribution with mean of…

Q: Which is better a score of 82 on a test with a mean of 65 and a standard deviation of 15, or a score…

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

Q: The data has a mean of 27 and a standard deviation of 3.8, rounded to the nearest tenth. How many of…

A: Given that  a data has a mean μ = 27                                  standard…

Q: Pat's z-score on an exam is -1.23. In a normally distributed population with u of 25 how many…

A: Provided information is ; Pat's  z-score = -1.23 population mean(μ) = 25  we know that ; z-score…

Q: The mean grade on a statistics exam is/M=82, the standard deviation is=12. What actual grade has a…

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

Q: What is the corresponding Z score ? Mean is 70, standard deviation is 10 and X= 89

A: We have to find z score.

Q: Which is better a score of 91 on a test with a mean of 81 and a standard deviation of 15, or a score…

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Q: What proportion of the scores in a normal distribution falls below z= -1.32?

A: Let X ~ N(0,1). Then, P(X<-1.32)=P(X>1.32)  [ As X is symmetric about…

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Given data, μ=35σ=12P(X>60)=?

Q: A normal distribution of scores representing ones fear of crime is analyzed.  Higher scores indicate…

A: The question is about normal distribution.Given :Population mean score (  ) = 6Population standard…

Q: For woman at Hartford college, times to run 400 meters are normally distributed with a mean of 85…

A: Solution: Let X be the time to run 400 meters. From the given information, X follows normal…

Q: A certain standardized tests math scores have a bell shaped distribution with a mean of 525 and a…

A: GivenMean(μ)=525standard deviation(σ)=105

Q: The scores on a standardized test are normally distributed with a mean of 105 and standard deviation…

A: Let k is 0.6 standard deviation below the mean.  That means -0.6 is the z score of the value.…

Q: The mean score in a test is normally distributed with mean 30 and standard deviation 10. What is…

A: Given :  Mean, μ = 30 standard deviation, σ = 10 x = 55

Q: 2000 freshmen at state university took a biology test. the scores were normally distributed with a…

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

Q: A police recruit received a score of 70 on an indurance test for which the mean score is 65.5. The…

A: We know that the If μ is the mean score and σ is the standard deviation for this set of test scores,…

Q: Prestigious University desires to accept only the top20% of all graduating seniors based on the…

A: Given: μ=500σ=100 The z- value is obtained as below:…

Q: an exam score has a mean of 506 and a standard deviation of 100. What exam score corresponds to a…

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Q: An instructor in a large lecture class found, at the end of the semester, that the total point…

A: The provided information is:

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: The scores for a standardized test follow a normal distribution with a mean test score of x = 84,…

A:

Q: Which is better a score of 95 on a test with a mean of 70 and a standard deviation of 15, or a score…

A:

Q: Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Solution: Let X be the time a patient of a medical center spends waiting for an appointment. From…