me mean is 225 and the standard deviation is 28 for a normally distributed variable, what is the x value that corresponds to a z = -0.93?

Q: At the shot put event the mean was a throw of 44.22 feet, with a standard deviation of 3.65 feet.…

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Q: Mean 255, x is 230 and z score is -2 find standard deviation

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Q: I need help finding the g average and standard deviation. Then answering number 1 - is the accepted…

A: Given Information: Consider the given fitted data: Trial A gexp=|2A| 1a -7.03E+00 14.07 1b…

Q: A researcher at a major hospital wishes to estimate the average cholesterol level of the adult…

A:

Q: The mean of a set of data is 108.06 and its standard deviation is 115.45 What is the z score for a…

A: Z-score = 3.3045 answer.

Q: In a population of scores, X = 83 corresponds to z = 0.50 and X = 93 corresponds to z = +2.00. What…

A: We have to find mean and sd.

Q: what will be the value of X at the z score =-2.5 given, mean=45 and standard deviation =5?

A: Mean = 45 Standard deviation = 5  Z score =-2.5 We have to find X score  for given data...

Q: The mean income of a group of sample observations is $500; the standard deviation is $40. According…

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Q: When we compute a standard deviation, we are trying to get a measure of the average distance of…

A: Let us understand better by assuming X1, X2, ...., Xn be n data points. Then,…

Q: Can you find the mean and the standard deviation with this data?

A: Given: Data on Index finger length for female. Step-by-step procedure to obtain the mean and the…

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: A sample of university students has an average GPA of 2.78 with a standard deviation of 0.45. What…

A: We have given that,  Let X be the GPA scores from normal distribution with average or mean (μ) =…

Q: . A distribution has a coefficient of variation of 65% and mean of 47. What is the value of the…

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: For a t distribution with 15 degrees of freedom, 90% of the distribution is within how many standard…

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Q: The mean difference equals 1.2, the standard deviation of the difference equals 1.5, and n equals…

A: It is given that mean difference is 1.2, the standard deviation of the difference is 1.5 and the…

Q: What was the cutoff for a failing score? Approximately what percentage of the students failed?

A: The scores on a psychology exam were normally distributed with a mean of 68 and a standard deviation…

Q: In a particular examination, the mean score is 82 and the standard deviation is 3.7. Wha is the Z-…

A: Given that the mean is 82 and standard deviation is 3.7. That is, μ=82σ=3.7

Q: The average temperature in a town in January is 22.1 oF and the standard deviation is 7.5 pF. What…

A: we have to find average temperature  in Celsius  from given data. given data : mean = 22.1.of…

Q: he scores on a psychology exam were normally distributed with a mean of 65 and a standard deviation…

A: Given,μ=65σ=6

Q: (c) If the standard deviation remains at 0.5 ounce, what must the mean weight be for the company to…

A: Givenstandard deviation(σ)=0.5x=13 ounces

Q: The weekly mean income of a group of executives is $1,000 and the standard deviation of this group…

A:

Q: mark is provided a score of X=57 that corresponds with a score of X=57 that corresponds with a…

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Q: A distribution of exam scores has a mean of μ=80. If your score is X = 74, which standard deviation…

A:

Q: The mean of a data ser is 70. The standard deviation is 2. Between what Value is 95% of data found…

A:

Q: The distribution of heights of men is approximately Normal with a mean of 69.2 inches and a standard…

A: Given information- Population mean, µ = 69.2 inches Population standard deviation, σ = 2.5 inches We…

Q: At Thomas Nelson Community College, the Pre-Test for Mathematics has 200 points on the test. The…

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Q: the average height on the soccer team is 66 inches with a standard deviation of 3. a z score of -1.6…

A: Introduction: Consider X as a normally distributed random variable, with mean μ and standard…

Q: Many students did an exam, the mean was 15 and the standard deviation was 32 The highest mark was…

A: Given Mean μ=15, standard deviation σ=32  X=103

Q: or a normal distribution with a mean of µ = 10 and a standard deviation of σ = 2, what is p(X<15)?

A: Given that  The distribution is normal with Mean (μ) = 10 Standard deviation (σ) = 2   We know that…

Q: If the mean of x bar is equal to 15.3 and the standard deviation of x bar is 1.20, what is the…

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Q: The systolic blood pressure of adults in the USA is nearly normally distributed with a mean of 121…

A: X follows a Normal distribution with mean = 121 and S.D = 19 Then z=(x-mean)/SD = (x-121)/19…

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: If the mean of p hat equals 0.28 and the standard deviation of p hat is 0.07, what is the percent of…

A:

Q: f the class average is 84

A: Here it is given that - Mean (μ) = 84 Standard Deviation (σ) = 5 Let, X be a random variable which…

Q: The mean grade in the Physics examination was 73 and the standard deviation was 8. Determine the…

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Q: Suppose the weekly rent of international students in Sydney is normally distributed with a mean of…

A: Assume,  X be the random variable which represents the amount of weekly rent in dollars. μ be the…

Q: A quantitative data set has mean 15 and standard deviation 2. At least what percentage of the…

A: It is given that the mean is 15 and standard deviation is 2.

Q: Jack had an average score of 75 with a standard deviation of 3. Mikes z-score was 1.85. His actual…

A: We have given that,  X be the random variable from normal distribution with mean Or average score…

Q: Find the z-score when x is 5, mean equals 7, and standard deviation 3.

A: Solution: Let X be the random variable. Then, the z-score is calculated by using the formula

Q: If the mean of x bar is equal to 4.2 and the standard deviation of x bar is .10, what is the percent…

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Q: After 6 points have been added to every score in a sample, the mean is found to be M = 70 and the…

A: Given Data: After 6 points have been added Mean=70 SD(X)=13   Let Y be the variable after adding the…

Q: After 3 points have been added to every score in a sample, the mean is found to be M= 83 and the…

A: After 3 points have been added to every score in a sample, the mean is found to be M= 83. The value…

Q: The data set has mean 30 and standard deviation 4. Approximately what percentage of the observations…

A: The provided information are: Population mean (µ) = 30 Population standard deviation (σ) = 4

Q: On the final exam, your friend scored a 93 and you scored a 85. The scores are normally distributed…

A: Obtain the Z-score for the random variable X equals 85. The Z-score for the random variable X equals…

Q: In a test, the average of the grades is 80 and the standard deviation is 5. John's grade is 70, so…

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Q: Alice was told that her reading test score was one standard deviation below to me if test scores…

A: Given that, Alice was told that her reading test score was one standard deviation below to me if…

Q: Brian scored an 80% on a Chemistry Exam. The average on the exam was a 68%, with a standard…

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Q: On a standardized test, Jose scored an 87 and Mia scored a 74. The distribution of test scores for…

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Q: On an exam with u = 52, you have a score of X = 56. Which value for the standard deviation would…

A: We have given that µ = 52 x = 56 z-score formula is given as  z =( x - μ )/σ

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.