Find the z-score for the value 86, when the mean is 61 and the standard deviation is 1. O A. z= - 1.39 O B. 2= 25.00 O C. z=1.39 O D. z=24.00

Q: the mean is 146, and standard deviation is 35. A score of 251 is how many z-scores above the mean?

A:

Q: Find the z-score for the value 62, when the mean is 56 and the standard deviation is 2. O A. z=3.00…

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

Q: Find the z-score for the value 82, when the mean is 98 and the standard deviation is 3. OA. 2= -567…

A: From the provided information, Mean (µ) = 98 Standard deviation (σ) = 3 X~N (98, 3)

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: Test scores for a history class had a mean of 89 with a standard deviation of 8.9. Suppose a student…

A: According to the given information, we have Mean = 89 Standard deviation = 8.9 Raw score = 67

Q: Find the z-score for the value 69, when the mean is 96 snd the standard deviation is 5. z-score= ?

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: The mean score on the ACT test was 23.7 and the standard deviation was 5.8. The distributions of…

A: Given: Mean = μ = 23.7 Standard deviation = σ = 5.8

Q: Scores on a test have a mean of 6 and a standard deviation of 9. Michelle has a score of 57. Convert…

A:

Q: the average grade is 84 with a standard deviation of 4. What is each grade for -1 2 0 1.5 -1.25

A: Given Mean μ=84Standard deviation σ=4 The formula for Z score isZ=X-μσX=Z×σ+μ

Q: IQ test scores are normally distributed with a mean of 99 and a standard deviation of 11. An…

A: IQ test scores are normally distributed with a mean of 99 and a standard deviation of 11. An…

Q: Let X = number of miles a family travels for summer vacation. X follows a normal distribution with a…

A: From the given information,X follows a normal distribution with a mean of 311 miles and standard…

Q: he mean on an exam is 80 with a standard deviation of 5 points. If Joe scored a 90 on the exam, what…

A: given data, μ=80σ=5x=90 z score for the given data=?

Q: H=34, o=4.5, the score is 2.5 standard deviations above the mean

A: Suppose the variable of interest is x.The mean is and the standard deviation is .

Q: the mean is 146, and standard deviation is 35. A score of 181 is how many z-scores above the mean?

A:

Q: The scores on a mathematics exam have a mean of 65 and a standard deviation of 7. Find the x-value…

A: From the given information,   Mean = 65 Standard deviation = 7   And, z =-2.575

Q: A manufacturer of light bulbs finds that one light bulb model has a mean life span of 1026 h with a…

A: Given, Mean life span of 1026 h and standard deviation 86 h.

Q: Juan makes a measurement in a chemistry laboratory and records the result in his lab report. The…

A: The standard deviation of students lab measurements is 8. Juan repeats the measurement 2 times. That…

Q: The mean is 146 and the standard deviation is 35. A score of 41 is how many z-scores below the mean?

A:

Q: Find the z-score for the value 51, when the mean is 65 and the standard deviation is 8, rounding to…

A: Solution: Let X be the random variable. From the given information, µ=65 and σ=8.

Q: A distribution of values is normal with a mean of 38.3 and a standard deviation of 84.2. Find P98,…

A: From the provided information, Mean (µ) = 38.3 Standard deviation (σ) = 84.2 Let X be a random…

Q: The mean score on the ACT test was 19.3 and the standard deviation was 5.4. The distributions of…

A: The z-score of a random variable X is defined as follows: z = (X – µ)/σ. Here, µ and σ are the mean…