Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. 0.1151

Q: People with z-scores above 2.5 on an IQ test are sometimes classified as geniuses. If IQ scores have…

A: Given,   People with z-scores above 2.5 on an IQ test are sometimes classified as geniuses. If IQ…

Q: The data set has size 60. Approximately how many observations lie within three standard deviations…

A: From the empirical rule

Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 6.…

A:

Q: A given distribution has a population mean, μ, of 121 and a population standard deviation, σ, of 7.…

A:

Q: A population data set has a mean of 81 and a standard deviation of 5.2. Find the z-scores for each…

A: Population mean, μ=81 population standard deviation, σ=5.2 The formula of z-score is, z=x-μσ…

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

A: Given Data: Let X represent the point distribution Mean=530 Standard deviation=80   X~ Normal(530,…

Q: Find the Z-Score for a IQ  test score of 142 when the mean is 100 and the standard deviation is 15.

A: It is given that the mean and standard deviation are 100 and 15, respectively. The IQ test score is…

Q: A score that is 12 points below the mean corresponds to a z-score of z =-1.50. What is the standard…

A:

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

A:

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: 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: A given distribution has a population mean, μ, of 114 and a population standard deviation, σ, of 12.…

A:

Q: A z-score of −1 tells us that a score fell one standard deviation below the mean in a group of…

A: Empirical rule: For a normal distribution, the approximate values that fall in the specified…

Q: A given distribution has a population mean, μ, of 116 and a population standard deviation, σ, of 8.…

A: From the provided information,

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 71…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A given distribution has a population mean, μ, of 125 and a population standard deviation, σ, of 14.…

A:

Q: Which of the below data sets has the lowest standard deviation? You do not need to calculate the…

A: The standard deviation is used to calculate the variability of the data set. It tells us that how to…

Q: . For a population with a mean of µ = 70, a score of X = 64 corresponds to z = -1.50. What is the…

A:

Q: A score that is 6 points below the mean correspond. to a z-score of z = -2.00. What is the…

A: The following is the formulae for z-score                       i.e., z=X-μσ Here, X is variable…

Q: A given distribution has a population mean, μ, of 150 and a population standard deviation, σ, of 6.…

A: Distributions are of 2 types, discrete and continuous. A normal distribution is a continuous…

Q: The final grades in a math class has a mean of 77 and a standard deviation of 9.77 if the professor…

A: Here we need to find the cutoff for A grade. Given that the top 10% are given A. We assume that the…

Q: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.…

A: A given distribution has a population mean, μ, of 133 and a population standard deviation, σ, of 15.

Q: A given distribution has a population mean, μ, of 117 and a population standard deviation, σ, of 6.…

A: Given data, Mean (μ)=117 sd(σ)=6 If x=172 z=?

Q: A given distribution has a population mean, μ, of 147 and a population standard deviation, σ, of 8.…

A: Given information Mean (µ) = 147 Standard Deviation(σ) = 8 X = 130 z-score

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

A: Given: The mean score of a Science test is μ=42. The standard deviation is σ=5. Let X be a random…

Q: A large normally distributed population has a mean of 502 and a standard deviation of 25. If the…

A:

Q: Find the range and standard deviation for the data items in the histogram below. 5 4 Frequency

A: From the histogram, The frequency table is, Data Frequency 10-20 2 20-30 5 30-40 5 40-50…

Q: If you score 76 on a commercial pilot exam that has a mean score of 70 and a standard deviation of…

A: We have to find given percentile ....

Q: A given distribution has a population mean, μ, of 101 and a population standard deviation, σ, of 15.…

A: Z-score for any Raw score X is given by, Z Score=(X-mu)/sigma Where mu is mean and sigma is standard…

Q: Hello, how do you calculate this? Thank You!

A: Compute the 90% confidence interval for the population mean.Since the sample size is small and the…

Q: A given distribution has a population mean, µ, of 106 and a population standard deviation, ơ, of 15.…

A: It is given that Mean = 106, SD = 15 And value x = 134

Q: A given distribution has a population mean, μ, of 139 and a population standard deviation, σ, of 15.…

A: Given data, Mean( μ)=139 sd( σ)=15 If x=81 z=?

Q: Suppose that the scores on a statewide standardized test are normally distributed with a mean of 71…

A:

Q: A given distribution has a population mean, μ, of 140 and a population standard deviation, σ, of 7.…

A: From the given information,   Mean = 140 Standard deviation = 7   The objective is to find the…

Q: A given distribution has a population mean, μ, of 100 and a population standard deviation, σ, of 9.…

A: From the provided information, Mean (µ) = 100 Standard deviation (σ) = 9 X~N (100, 9)

Q: The data set has size 90. Approximately how many observations lie within two standard deviations…

A: The Empirical Rule states that 99.7% of data observed following a normal distribution lies within 3…

Q: A given distribution has a population mean, μ, of 137 and a population standard deviation, σ, of 12.…

A:

Q: The data set has size 40. Approximately how many observations lie within two standard deviations to…

A: 68-95-99.7-rule: Let X be an observation from a normal distribution, having mean µ and standard…

Q: A given distribution has a population mean, μ, of 101 and a population standard deviation, σ, of 8.…

A:

Q: A given distribution has a population mean, μ, of 131 and a population standard deviation, σ, of 11.…

A:

Q: A given distribution has a population mean, μ, of 106 and a population standard deviation, σ, of 11.…

A: Mean = 106 Standard deviation = 11 Raw score = 104

Q: A given set of data has a specific standard deviation. Describe what will happen to the standard…

A: Answer: The standard deviation of new data is remains same as original data. As a general rule, the…

Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 12.…

A: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 12.…

Q: A grade of 81 in a test in which the mean is 75 and the standard deviation is 12 corresponds to a…

A:

Q: A given distribution has a population mean, μ, of 142 and a population standard deviation, σ, of 10.…

A: It is given that the mean (µ) is 142 and the standard deviation (σ) is 10 and score, x is 110.

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

A: It is given that mean and standard deviation are 530 inches and 80, respectively.

Q: The data set has size 80. Approximately how many observations lie within two standard deviations to…

A: Empirical rule: On a normal distribution about 68% of data will be within one standard deviation of…

Q: The selling price of a new car is normally distributed with an average of $19110 and a standard…

A: Let X denotes a selling price of a new car. Here, X follows normal distribution with mean value of…

Q: A given distribution has a population mean, μ, of 138 and a population standard deviation, σ, of 9.…

A:

Q: A given distribution has a population mean, μ, of 144 and a population standard deviation, σ, of 15.…

A: