In a particular statistics exam, the 10th percentile of final exam score is 59, and the 90th  percentile of final exam score is 93. A histogram of the scores approximately follows the normal curve. What is the approximate

Q: For the data in the following sample: 1,1,9,1 A. Find the ss, variane, and standard deviation. B.…

A: Given data: 1,1,9,1

Q: Suppose you select a sample of 2,000 high school seniors' verbal SAT scores. The mean and standard…

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Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

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Q: The percentage of area under the normal curve between the mean and 0.2 standard deviations from the…

A: Introduction: For a random variable, X with mean μ, and standard deviation σ, the z-score is given…

Q: A medical lab tested a sample of 8 vials of blood for acidity on the pH scale.  Use this data to…

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Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: The median score on a test was 80% with a standard deviation of 5%, what does that tell you about…

A: Central tendency is used to determine the average of the data set. Dispersion is used to determine…

Q: You have a dataset with a mean of 50 and a standard deviation of 5. What is the coefficient of…

A: From the provided information, Mean (x̄) = 50 Standard deviation (s) = 5

Q: The rainfall in a town last year measured 31 inches. If the annual rainfall has a mean of 48.89…

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Q: Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those…

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Q: The weight of newborn babies is normally distributed, with a mean of 3.3 kilograms and a standard…

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Q: A group of students take a Statistics Exam where the average was M = 90 and the standard deviation…

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Q: Laura learned that the average GPA in her school is 3.6 with a standard deviation of 0.3. If her GPA…

A: From the given information,   Mean = 3.6 Standard deviation = 0.3   The objective is to find the…

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 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: Human pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15…

A: The mean is 267 days and the standard deviation is 15 days.

Q: The distribution of scores is approximately normal with a mean of 31 and a standard deviation of 5.…

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Q: The area of the shaded region is (Round to four decimal places as needed.)

A: mean = 100 standard deviation = 15

Q: Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores…

A: GIVEN DATA, normal distribution μ=100σ=15we have to find out the indicated IQ score for the given…

Q: The mean and standard deviation for the final exam in Dr. Fudd's class were as follows: mean = 86…

A: Given that  Mean = 86  ,  Standard deviation = 3  Bugs scored = 88

Q: in how you determined your findings. How many children scored lower than Emily? How many children…

A: The standard normal variate of the normal distribution is continuous and follows that z~N(0,1). The…

Q: The scores on a psychology exam were normally distributed with a mean of 56 and a standard deviation…

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A: Given that IQ scores of adults is normally distributed with mean 100 and standard deviation 15. The…

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

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Q: ind the percentage of area under a normal curve between the mean and the given number of standard…

A: The mean and standard deviation of the standard normal distribution are 0 and 1.

Q: The distribution of the scores on a standardized exam is approximately normal with mean 400 and…

A: The two values of Z that will contain 50% of scores lie are obtained as shown below:From the…

Q: The difference in the population means divided by the population standard deviation of a study is…

A: Given that The difference in the population means divided by the population standard deviation

Q: ASK YOUR TEACHER   A normal distribution has a mean of 85.3 and a standard deviation of 4.84. Find…

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Q: The heights of women follow a normal distribution with a mean height of 63.7, and a standard…

A: Let x be the heights of women which follows normal distribution with mean 63.7, and standard…