The mean grade on a statistics exam is/M=82, the standard deviation is=12. What actual grade has a z-score of z = -1.5
Q: A score of is 3 standard deviations above the mean.
A: Let , X→N(μ=140 , σ=28) Our aim is to find the score 3 standard deviation above mean
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Q: A distribution of values is normal with a mean of 123.2 and a standard deviation of 62 Find P35,…
A: Given: A distribution of values is normal with μ=123.2 , σ=62
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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…
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A: Solution: Let X be the data value. From given information, X has mean µ=90 and a standard deviation…
Q: The scores on a standardized test are normally distributed with a mean of 115 and standa deviation…
A: Z = 2.2 , μ = 115 , σ= 15
Q: The weight of new born babies is normally distributed with a mean of 3.5Kg and a standard deviation…
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Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…
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Q: On a standardized exam, the scores are normally distributed with a mean of 300 and a standard…
A: To find the z-score of a person who scored 280 on the exam, where the scores are normally…
Q: The amount of coffee dispensed by a coffee dispensing machine is normally distributed with mean of…
A: Solution-: Let, X= The amount of coffee dispensed by a coffee dispensing machine Given: We find,…
Q: The mean rate for cable t.v.from a sample of 80 households was $29 per month with a standard…
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Q: On a recent quiz, the class mean was 75 with a standard deviation of 2.6. Calculate the z-score (to…
A:
Q: A normal distribution has a mean of 126 and a standard deviation of 10. Find the z-score for a data…
A: The random variable X follows normal distribution. The population mean is 126 and population…
Q: The average score on one of your MMW exams was 70 with a standard deviation of 15. Assuming the…
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Q: Birth weights at a local hospital have a Normal distribution, with a mean of 110110 oz and a…
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Q: A normal distribution has a mean of 81 and a standard deviation of 4. Find the z-score for a data…
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Q: A normal distribution has a mean of 80 with a standard deviation of 20 what score separates the…
A: Let x be the score which follows normal distribution with mean 80 and standard deviation 20. The…
Q: A normal distribution has a mean of 100 and a standard deviation of 7. Find the z-score for a data…
A: The mean is 100 and standard deviation is 7.
Q: Body temperatures of adults are normally distributed with a mean of 98.60 °F and a standard…
A: Solution: Let X be the body temperatures of adults. From the given information, X follows normal…
Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…
A: We know that, if X has a random variable which follows Normal distribution i.e. X~N(69.0,2.82), then…
Q: The final exam is worth 200 points with the usual 10% grading scale. Assume that the final exam…
A: Given Information: Mean (u) = 161 points Standard deviation (s) = 22
Q: A distribution of values is normal with a mean of 211.5 and standard deviation of 94.7. Find P3,…
A: mean = 211.5 , stdev = 94.7
Q: Body temperatures of adults are normally distributed with a mean of 98.60℉ and a standard deviation…
A: Given information Mean (µ) = 98.6 F Standard deviation (σ) = 0.73 F Probability of a healthy adult…
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: A normal distribution has a mean of 113 and a standard deviation of 6. Find the z-score for a data…
A: A normal distribution has a mean of 113 and a standard deviation of 6.
Q: Find P33,
A: Let , X→N(μ=40.5 , σ=53.3) Our aim is to find the P33
Q: A normal distribution has a mean of 125 and a standard deviation of 3. Find the z-score for a data…
A: A normal distribution has a mean of 125 and a standard deviation of 3. mu
Q: A normal distribution has a mean of 100 and a standard deviation of 2. If 69,146% of the data are…
A:
Q: If the mean score on the final exam is 70 with a standard deviation of 10 then the test score of a…
A: Given Mean =70 Standard deviations=10 Z=-1.5
Q: The mean for the population is 206 with a standard deviation of 20. Given a z score of -0.20,…
A: The mean is 206 and the standard deviation is 20.
Q: The weight of domestic cats fits a normal distribution with a mean weight of 8.9 lbs and a standard…
A: It is given that the mean is 8.9 and the standard deviation is 1.1.
Q: A normal distribution has a mean of 144 and a standard deviation of 8. Find the z-score for a data…
A: Given that, μ=144, σ=8 We know that, z-score is given as, Z=X-μσ
Q: A normal distribution has a mean of 80 and a standard deviation of 6. Find the z-score for a data…
A:
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: On a standardized exam, the scores are normally distributed with a mean of 350 and a standard…
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Q: A normal distribution has a mean of 134 and a standard deviation of 3. Find the z-score for a data…
A: According to the given information in this question We need to find the z score value
Q: Scores on an IQ test are normally distributed with a mean of 50 and a standard deviation of 20.…
A: Given: Mean = 50 Standard deviation (σ) = 20
Q: On a recent quiz, the class mean was 75 with a standard deviation of 4. Calculate the z-score (to 4…
A:
Q: On a standardized exam, the scores are normally distributed with a mean of 160 and a standard…
A: We have to find z score.
Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…
A: Given: X~N(μ,σ)μ=35σ=12
Q: A normal distribution has a mean of 117 and a standard deviation of 4. Find the z-score for a data…
A:
Q: The mean IQ score of adults is 100, with a standard deviation of 15. Use the Empirical Rule to find…
A: According to the given information in this question We need to apply empirical rule
Q: A distribution of values is normal with a mean of 197.6 and a standard deviation of 24.6. Find P40,…
A: Given that X denotes the value of the distribution that follows normal distribution With mean=197.6…
Q: A normal distribution has a mean of 130 and a standard deviation of 10. Find the z-score for a data…
A: We have given that, Let X be the random variable from normal distribution with mean (μ) = 130 and…
Q: A normal distribution has a mean of 141 and a standard deviation of 6. Find the z-score for a data…
A: The random variable X follows normal distribution. The population mean is 141. The population…
Q: A normal distribution has a mean of 108 and a standard deviation of 5. Find the z-score for a data…
A: Given, Mean, μ=108 Standard deviation, σ=5 z-score for a data x is calculated by using the formula…
Q: A normal distribution has a mean of 105 and a standard deviation of 7. Find the z-score for a data…
A:
Q: A normal distribution has a mean of 136 and a standard deviation of 10. Find the z-score for a data…
A: Given information- Population mean, µ = 136 Population standard deviation, σ = 10 We have to find…
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