Mean = Round to two decimal places Standard Deviation = Round to two decimal places Expected Number = Round to two decimal places

Q: Prothrombin time (PT) is a blood test that measures the time (in seconds) it takes for blood plasma…

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Q: How to calculate the population standard deviation?

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Q: Supposed the Mean percentage in algebra shoe is 70% and the standard deviation is 8% what percentage…

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Q: A distribution of values mean of 50 and standard deviation of 2. What is the interval of the middle…

A: To find the interval containing the middle 84% of the data, we can use the z-score corresponding to…

Q: Use the formula to find the standard error of the distribution of differences in sample means, .…

A: Introduction: Define X1, X2 as denoting a randomly selected observation from Population 1 and…

Q: How to calculate absolute value ? How to calculate standard deviation

A: An absolute measure of dispersion contains the same unit as the original data set. Absolute…

Q: A variable is normally distributed with mean 10 and standard deviation 3. Find the percentage of all…

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Q: ulse of people older than 70 population mean = (u = 80) standard deviation ( o = 5)  what is the…

A: Given: opulation mean = (u = 80) standard deviation ( o = 5)  Smaple size (n) = 20

Q: Increasing the standard deviation does what to a normal curve?

A: A low standard deviation indicates that the data points tend to be very close to the mean; where as…

Q: SAT exam math scores are normally distributed with mean 523 and standard deviation 89. We take a…

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Q: =9, median =13, standard deviation -5 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, Mean (x¯) = 9 Median = 13 Standard deviation(s) = 5

Q: The total area underneath any normal curve is equal to the mean one the variance the coefficient of…

A: Normal curve: A normal curve is a bell-shaped curve which shows the probability distribution of a…

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the IQ…

A: Excel formula: =NORMINV(0.305,0,1)=-0.5100

Q: A normally distributed population has a population mean ? = 40 and standard deviation ? = 5. What…

A: It is an important part of statistics . It is widely used .

Q: How likely is this mean to be less than 500

A: Let M denote the sample mean SAT exam score. Given that Mean = 523, SD = 89 and sample size n = 100

Q: LED bulbs: mean = 2,300 days, standard deviation = 230 days incandescent bulbs: mean = 100 days,…

A: Given Information: In the above situation we can see that the variables are normally distributed…

Q: is called the of the mean. standard error standard deviation O average error sigma

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Q: SAT exam math scores are normally distributed with mean 523 and standard deviation 89. Give the…

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Q: Mean =8, median =10, standard deviation=6 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, Mean = 8 median =10 standard  deviation =6

Q: SAT exam math scores are normally distributed with mean 523 and standard deviation 89. Give the…

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Q: High school students across the nation compete in a financial capability challenge each year by…

A: Z= x-μσ~N(0,1)

Q: Scores on a history test have a get age of 55 with standard deviation of 10. What is the z-score for…

A: GivenMean(μ)=55standard deviation(σ)=10student earned score on test(x)=95

Q: Standard deviation is a measure of how much m a normal person's behavior changes in a given time two…

A: It is needed to discuss about the standard deviation.

Q: Mean of SAT-math score of population:517 Standard deviation of the SAT-MATH SCORE:100 I WANT TO…

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Q: Mean typing speed is 90 wpm, with a standard deviation of 18 wpm.  What typing speed separates the…

A: Given,mean(μ)=90standard deviation(σ)=18

Q: Find the mean/ expected value of X round to two decimal place

A: The probability distribution is:xP(x)79920.00044920.004920.012-80.9836

Q: last 20 minutes left thank you!

A: Data analysis refers to the process of gathering relevant information from the given data to make…

Q: Lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation 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…

Q: Adult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the…

A: Z= x-μσ

Q: Which one is not measuring the degree to which the scores in a distribution are spread out or…

A: Variance is a measure of dispersion. It measures how far each observation falls from the mean of the…

Q: Mean =7, median =10, standard deviation =3 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 7 median = 10  and standard deviation = 3

Q: ion Mean = 30 Population Standard Deviation=10 what is the score separating bottom 33% from t

A: Given: Population mean μ=30 Population Standard Deviationσ = 10 Let X ~ N (30, 102)

Q: Mean 2, x is 5 and z score is 4 find standard deviation

A: Given ,mean(μ)=2Z-score=4and X=5

Q: Mean=8, median =11, standard deviation = 5 Find the coefficient of skewness (round to two decimals)

A: Answer: From the given data, mean = 8 , median = 11  and standard deviation = 5

Q: Cat's live an average 16 years with a standard deviation of 4 years. Assume the distribution is…

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Q: Statistics Question

A: Solution: From the given information, the probability distribution function of X is

Q: Interpret the Z score for a student who scored an 91 on an exam that had a mean of 86 and a standard…

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Q: Suppose that the time required to complete a 1040R tax form is normally distributed with a mean of…

A: We have to find given proportion...