Find the​ z-score that has 93.82​% of the​ distribution's area to its left.

Q: The time required for housekeeping to clean a hotel room for the next customer varies between 25 and…

A: Obtain the time that represents the 70th percentile of this distribution. The time that represents…

Q: A normal distribution has a mean of 60 and a standard deviation of 16. Indicate whether the body is…

A: Using z-score table to calculating above. Z-score=(X-mean)/standard deviation

Q: From a normal distribution with μ = 80 and σ = 8, what proportion of the curve lies at X ≥ 90?

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Q: Find the proportion of Normally distributed observations with a zz-score above 0.84. Give your…

A: Let Z be the random variable from normal distribution with z-score above 0.84 then we will find the…

Q: What the different shapes of the distribution tell us about the measures of central tendency.

A: The measures of central tendency are mean, median and mode.

Q: . Compare the median and the mean and sta about the distribution. Comment on how th tion relates to…

A: CI Freq 300-307 10 307-314 15 314-321 41 321-328 84 328-335 86 335-342 43 342-349 18…

Q: make a short description about the shape of distribution

A: The bar chart is used to visualize the categorical variable. Each represent the frequency…

Q: A normal distribution has a mean of μ = 70 and a standard deviation of  = 8. For the score, X = 72,…

A: Let X be the score. It is given, X follows normal distribution with mean µ=70 and a standard…

Q: under the area under the normal curve between the mean and +2.

A: Given: Mean of standard normal distribution μ=0 Standard deviation of normal distribution  σ=1 Let X…

Q: A normal distribution has a mean of µ = 200 with σ = 20. If a vertical line is drawn through the…

A: Let X be a random variable such that X~N200,202

Q: Which graph shows a normal distribution of student heights with a mean of 170 cm and a standard…

A: Normal Curve :The following are the normal curve properties The normal curve is bell shaped with…

Q: Find the proportion of Normally distributed observations with a z-score below 2.56. Give your answer…

A: Given Z=2.56

Q: Suppose that the national mean weight for a three-year-old girl is 35 pounds with a SD of 3 pounds.…

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Q: Select the z-score that is represented by the shaded region of the distribution.

A: The z-score that is represented by the shaded region of the distribution is -0.75. That is,

Q: A negative z score indicates that an individual's raw score:

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

Q: A normal distribution has a mean of µ = 40 with σ = 10. If a vertical line is drawn through the…

A: Given a normal distribution with mean = 40Standard deviation = 10The Z score for any data point X is…

Q: Show the work to find the z-score boundaries that separate a normal distribution as described in the…

A: The z-score boundaries that separate a normal distribution as described in the middle 20% from the…

Q: The general aviation Manufacturers Association has reported the average annual number of hours flown…

A: Mean = 120 Standard deviation = 30

Q: Suppose the value of a stock varies each day from $12 to $27 with a uniform distribution.  Find σ

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Q: Calculate the median temperature (rounded off to one decimal place) and describe the distribution of…

A: The frequency distribution of minimum temperatures in Cape Town over the past 50 days is shown in…

Q: A normal distribution has a mean of µ = 30 with σ = 5. If a vertical line is drawn through the…

A: the PDF of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: The mean of the distribution of grades for Exam 1 was 58 , while the median was 70. The distribution…

A: Given:  Mean of distribution =58 and  Median=70 then distribution is ? A. Left skewed   B. Right…

Q: Suppose that iQ scores have a bell shaped distribution with a mean of 103 and a standard devation of…

A: Given: μ=103 and σ=13.   Now, to find where the lowest 32% of IQ scores lie:PZ<z=0.32 Look for…

Q: What proportion of a normal distribution is located between the mean and z = -0.47?

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Q: Calculate the mean of the distribution. In

A: Here AS PER POLICY I HAVE CALCULATED FIRST MAIN QUESTION  Here given discrete probability…

Q: Estimate the mean of the distribution.

A: From the given histogram, we are considering the approximate frequency values: Class interval…

Q: a mean weight of 32 ounces. Assume the population what is the maximal margin of error associated…

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Q: z-score that is greater

A: we can assume it to be standard normal distribution with mean = 0 standard deviation = 1

Q: The distance of Josh throwing a javelin are normally distributed. What is the percentage of these…

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Q: Find the proportion of Normally distributed observations with a zz-score below 0.82. Give your…

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Q: Find the z-score boundaries that divide a normal distribution as described in the following. The…

A: Solution: From the given information, 70% area lies in the middle of the normal distribution and 30%…

Q: We’ve established that heights of 10-year-old boys vary according to a Normal distribution with μ…

A: Given,mean (μ)=138standard deviation(σ)=7

Q: What position [how many standard deviations] in the distribution corresponds to z-score of z= -1.00?

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Q: Find the limits that include the middle 30% of a normal distribution which has a  mean of 93 and a…

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Q: The sampling distribution of the mean will have the same mean as the original population from which…

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Q: A normal-shaped distribution with μ = 40 and σ = 8 is transformed into z-scores. Describe the shape,…

A: Normal distribution has a curve with bell shape which is centred at the mean of the distribution.…

Q: A normal distribution has a mean of µ = 80 with σ = 20. What score separates the highest 40% of the…

A: The given distribution is normal with mean 80 and standard deviation 20.

Q: explain normal distribution with examples?

A: The normal distribution is the most important probability distribution in Statistics because it fits…

Q: A normal distribution has a mean of μ = 70 and a standard deviation of σ = 8. For each of the…

A: Solution: 1. Let X be the score. From the given information, X follows normal distribution with mean…

Q: boulder 10k race was 1.78 standard deviations faster than women's average group. 405 women ran ,…

A: Given See the handwritten solution

Q: Find the variance

A: Given : X~N(0, 7)

Q: Suppose a biologist collected data on the weight of 50 lab rats that were 4 weeks old. The boxplot…

A: First of all, we know that A boxplot gives us 5 things: Minimum value.1st quartile, Median, 3rd…

Q: In a normal distribution, what is the Z-score of servation that is at the 48th percentile?

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Q: Give an example of a distribution that might be  non-normal.

A: Any skewed distribution would be the example of non-normal distribution, for example chi-square, or…

Q: What is left skewed distribution

A: Here we have to define What is left skewed distribution.

Q: Derive the mean and variance of normal distribution. Show your complete solutions.

A: Solution:- Mean of normal distribution The Gaussian pdf is defined as fX(x)=1σ2πexp-(x-μ)22σ2 where…

Q: Find the proportion of Normally distributed observations with a z-score above -1.93. Give your…

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Q: A uniform distribution has endpoints 4 and 18. What is the 90th percentile, reporting to one decimal…

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Q: Explain in brief about Weibull distribution.

A: