The scores on a standardized test are normally distributed with a mean of 80 and standard deviation of 10. What test score is 0.2 standard deviations above the mean?

Q: The reading test scores for the population of fifth graders is normally distributed with a mean of…

A: Given: X~Normalμ=55,σ2=82

Q: The mean score on a standardized test is 540 with a standard deviation of 55. What percent of…

A: Given mean= 540 Standard deviation=SD= 55 We have to find the z value of 625.

Q: The scores on a standardized test are normally distributed with a mean of 95 and standard deviation…

A: Formula : Let , mean = μ and standard deviation = σ The test score below 'a' standard deviation of…

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: what percent of the data falls within 2 standard deviations of the mean?

A:

Q: if a student scored 88 points on a test when the mean score was 80.2 and the standard deviation was…

A: From the provided information, Mean (µ) = 80.2 Standard deviation (σ) = 5.7

Q: Assume the cholesterol levels of adult American women can be described by a Normal model with a mean…

A: According to the given information, we have Mean = 188 mg/dL Standard deviation = 24 mg/dL

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

A: Given data,μ=35σ=12P(11<X<35)=?

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

A:

Q: A normal population has a mean= 61 and standard deviation=16. what proportion of the population is…

A: From the provided information, Mean (µ) = 61 Standard deviation (σ) = 16 X~N (61, 16)

Q: Why does Mean of the Deviations Not a Useful Measure?

A:

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

A: Consider X be the random variable representing the he scores on a standardized test.    X is…

Q: List a z score value that is three standard deviations away from the mean.

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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: What proportion of people has diastolic blood pressure less than 80?

A:

Q: Sally had a z score of +0.25 on a test with a mean of 62 and a standard deviation of 5. What was her…

A: From the provided information,Z score = +0.25

Q: The mean score of the students on pre-assessments is 10 and the standard deviation is 2. What was…

A:

Q: The scores on a test are normally distributed, with a mean of 82 and standard deviation of 5. What…

A: Let  X be the random variable from normal distribution with mean (μ) = 82 and standard deviation (σ)…

Q: The data in a data set are normally distributed with a mean of 190 and a standard deviation of 30.…

A: ∗Mean μ=190    standard  deviation σ=30    X~N 190,30 we need to find,   PX<130+PX>250=P…

Q: The Psych 230 students finished the course with a total population mean of 130 points and the…

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Q: On a test that has a normal distribution, a score of 60 falls one standard deviation above the mean,…

A: Given that the test score has Normally distributed.  A score of 60 falls one standard deviation…

Q: The average on quiz score is 4 with a standard deviation of only 0.385. What are the chances that…

A: Given that mean=4 and standard deviation= 0.385 Let, X= quiz score  X follows normal distribution…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Given Information: Population mean (u) = 165  Standard deviation (σ) = 10  Score earned by a subject…

Q: he scores on a standardized test are normally distributed with a mean of 120 and standard deviation…

A:

Q: The scores on a test are normally distributed with a mean of 150 and a standard deviation of 30.…

A: The normal distribution:A continuous random variable X is said to follow normal distribution if the…

Q: The weights of miniature horses are roughly normally distributed with a mean of 230 pounds and…

A:

Q: The scores on a standardized test are normally distributed with a mean of 100 and standard deviation…

A: Given data,Mean μ=100sd     σ=15If z-score=0.8x=?

Q: The annual per capita consumption of oranges (in pounds) in the United States  can be approximated…

A: It is given that the mean and standard deviation are 19.2 and 4, respectively.

Q: The scores on a standardized test are normally distributed with a mean of 100 and standard deviation…

A:

Q: korynn is calculating the variability in her data by measuring the average distance of scores from…

A: Given: korynn is calculating the variability in her data by measuring the average distance of scores…

Q: What is the z score for 120 when mean is 100 and standard deviation is 5.

A: We have to find z score for 120 when mean is 100 and standard deviation is 5.

Q: The scores on a standardized test are normally distributed with a mean of 95 and standard deviation…

A: Mean = 95 Standard deviation = 2

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

A: Given that the mean is 35 minutes and standard deviation is 12 minutes. That is, μ=35 and σ=12 Let…

Q: The average score on the Stats midterm was 71 points with a standard deviation of 5 points, and…

A: Given that mean = 71 and SD = 5 And the z score is given by Z = 1

Q: The distribution of scores for an exam follow the rule of thumb for standard deviation. If the…

A: Given information: Population meanμ=75. Population standard deviationσ=5. Let X be the scores for…

Q: there are 75 students in the class and 20 students are getting a+ grade in the class find the mean…

A: