need standard deviation p

Q: what will be the value of X at the z score =-3 given, mean=10 and standard deviation =2?

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: The standard deviation of the mean is less than the sample standard deviation because it estimates…

A: Given that True or False  The standard deviation of the mean is less than the sample standard…

Q: There is a new fertilizer that is supposed to increase plant growth. To test this, 16 soy bean…

A: The given values are  Sample size = n= 16 the sample mean = X  = 24 The sample standard deviation =…

Q: What is the point estimate of the population mean? What is the estimated standard error of the…

A: Given: Sample size, n=25Sample mean,x¯=165Sample sd, s=15

Q: Scores on a test have a mean of 86 and a standard deviation of 13. Jerrica has a score of 94.…

A:

Q: The weights of men in their 30s are normally distributed with a mean of 190 pounds and a standard…

A: From the provided information, Population mean (µ) = 190 pounds Population standard deviation (σ) =…

Q: What percentage of the data will fall between 1 standard deviation below the mean and 2 standard…

A: P(-1<z<2)=?

Q: Can you please explain the difference between the standard deviation and standard error of x and p,…

A:

Q: Isn't here the standard deviation equal to 4, not 2, as the tutor wrote?

A: Solution-: Given: μ=-3,σ=4 We want to find, P(0<X<2)=? Draw the picture.

Q: The scores on a test are normally distributed with a mean of 70 and a standard deviation of 14, find…

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Q: The amount of time that people spent at Grover Hot Springs is normally distributed with a mean of 68…

A: Solution

Q: The formula for the standard error (standard deviation of the distribution of sample means) implies…

A: Standard error is approximately equal to standard deviation,it is a part of inference statistics. It…

Q: What formula is used to find the standard error of mean?

A: we have to give correct formula to find standard error of mean.

Q: A standard deviation of 0 implies: there is great variability in the data there is no variability in…

A: The standard deviation is a measure of variability of the data. The formula for the standard…

Q: How does the curve change when the standard deviation is the same and the mean changes?

A: The mean is the center of symmetry of a curve or normal density curve.

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

A: GivenMean(μ)=100standard deviation(σ)=15

Q: Are your results accurate just because they were within 1 standard deviation of the mean?    Are…

A: Not necessarily. The standard deviation is a measure of how spread out the data is around the mean.…

Q: I also need the standard deviation for the above question.

A:

Q: What would happen to the margin of error if the standard deviation were to decrease? it would…

A: We know that ,Margin of error=critical value ×standard deviation sample sizeMargin of error =Zα2 ×σn…

Q: In an exam for a statistics class, the class average is 68 with a standard deviation 4. If a student…

A: Given mean μ= 68, standard deviation σ= 4 Let X: score of the students = 75

Q: Describe about mean square between.

A: In ANOVA, “SS” stands for “sum of squares”, “df” stands for degrees of freedom, F is for the test…

Q: The population standard deviation and sample standard deviation are of the same value if the…

A: We want to tell you above statement is true or false

Q: The scores on a standardized test are normally distributed with a mean of 90 and standard deviation…

A: The test score is 0.6 standard deviations above the mean is obtained below: From the given…

Q: when do we use the statistical treatments

A: I will discuss when we have to use statistical treatments

Q: Regression and correlation are used for estimation. Select one: True False

A: The most commonly used estimation techniques for investigating the relationship between two…

Q: (c) Find the sample correlation coefficient r and the sample coefficient of determination . (Round…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: A psychologist is studying smokers' self-images, which she measures by the self-image (SI) score…

A:

Q: An investment analyst collects data on stocks and notes whether or not dividend were paid and…

A: Given that: Pvice  No price  Tofal  increase  inclease 40751158748135127123250

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: When standardizing, the mean becomes 0 and the standard deviation becomes 1. True

A: The formula for standard normal score is, z=x-μσHere μ is the mean andσ is the standard deviation.

Q: Why would you use mean absolute deviation as opposed to the mean average?

A: Mean = average of all data points .

Q: Prob-6 To avoid any high-speed imbalance in a rotating shaft; it needs to have a variance of its…

A: Given: Hypothesized variance σ2=0.0004 Sample size (n) = 16 Sample standard deviation (s) = 0.018…

Q: How does the slightly different perspective make the standard deviation even more accessible?

A: Standard deviation: It is a measure of how far each observed value is from the mean and standard…

Q: Check our blood pressure: In a recent study, the Centers for Disease Control and prevention reported…

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Q: Can you give me a particular situation that it is related to science wherein small standard…

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Q: Explain Why can’t the value of the standard deviation ever be negative?

A: Standard deviation is basically the square root of the variance and variance quantifies the amount…

Q: what is the Mean Absolute Deviation? What is it's purpose?

A: Deviation in statistical term defined as a single (or) more number of data values deviated from the…