Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.36 and a standard deviation of 1.5. Using the empirical rule, what percentage of American women have shoe sizes that are between 5.36 and 11.36?

Q: According to National Health Survey heights of men are normally distributed with standard deviation…

A: From the provided information, Population standard deviation (σ) = 2.50 Let X be a random variable…

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a…

A: Empirical rule: The probability that the observation under the normal curve lies within 1 standard…

Q: What is the mean height for this population? -What is the standard deviation of the height…

A: Let X denote the heights for women in their 20s. Given that X follows N(mean, SD), then Z = (X -…

Q: according to chebyshev's theorem, at least 88.9% of data will be between   Mean=15.4  Standard…

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Q: Medical research suggests that systolic blood pressure in adults is approximately normally…

A: Denote X as the blood pressure in adults. It is given that X is approximately normally distributed,…

Q: 2. The average time spent sleeping (in hours) for a group of medical residents at a hospital can be…

A: Given that  X~N(μ= 6.1 , σ= 1) μ= 6.1 , σ= 1 Formula for Z-score Z=(X-μ)/σ

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 103 and a standard deviation…

A:

Q: The waist girth of 2,500 employees in a large company follows the normal distribution with mean of…

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Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Given that Mean = 6.9 and Standard deviation = 1.5 Formula z = (x - mean)/ SD

Q: According to the Center for Disease Control and Prevention (CDC), the mean life expectancy in 2015…

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Q: According to a recent survey, the population distribution of number of years of  education for…

A: What is the standard error of mean?

Q: he retirement age of National Football League (NFL) players is Normally distributed with a mean of…

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Q: According to the Center for Disease Control and Prevention (CDC), the mean life expectancy in 2015…

A: Given Data Population Mean,μ = 76.3 Population Standard Deviation,σ = 15.0 sample…

Q: Suppose that the number of hours that an adult watches in a day has a mean of 2.4 hours and a…

A: Given: Mean, μ=2.4 hours Standard deviation, σ=0.7 hours (i) Percentage of adults watch between 1…

Q: In a foreign country, beginning teachers' salaries have a mean of $55,080 with a standard deviation…

A:

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.478.47…

A: The random variable shoe size follows normal distribution. The population mean is 8.47. The…

Q: Help!!

A: (a) Given: μ=374, σ=64, n=5 The corresponding z-value needed to be computed is: The probability…

Q: A survey was taken among the freshman at our college to find out how many hours a week they spent…

A: It is given that the mean and standard deviation are 30 and 10, respectively.

Q: Assuming that the heights of college women are normally distributed with mean 64 inches and standard…

A:

Q: The average score on the standard I.Q test is 100 with standard deviation 15. The     Mensa group…

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Q: Suppose the average golfer drives the ball around 225.55 yards with a standard deviation of 8.82.…

A: Assume that the random variable x denotes the distance of balls drove by the golfer.

Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A: Solution-: Given:μ=40,σ=11.2 We want to find  the proportion of customers who use ATMs between 30…

Q: Suppose that grade point averages of undergraduate students at one university have a bell-shaped…

A: According to the given information, we have Mean = 2.55 Standard deviation = 0.43 Given that the…

Q: Mens' heights are normally distrubted with a mean of 68.3 inches and a standard deviation of 2.7.…

A:

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.11 and a…

A: Given that the shoe sizes of American women have a bell-shaped distribution with a mean of 8.11 and…

Q: The average hours of sleep on a weeknight was 6.9 hours with a standard deviation of 1.5 hours. What…

A: Given Let X : The average hours of sleep on a weeknight mean = μ= 6.9  standard deviation = σ= 1.5…

Q: A marketing researcher wants to estimate the mean amount spent per year (5) on a web site by…

A: Given information Hypothesized mean µ = $49 Sample size (n) = 130 Mean x̅ = $55 Standard deviation…

Q: ppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.42 and a…

A: Given data,Mean μ=8.42sd    σ=1.52P(6.9<X<9.94)=?

Q: Resting pulse rates for healthy adults are found to have approximately a Normal distribution with a…

A:

Q: Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation…

A: Given, Mean, mu= 104 Standard deviation, sigma= 17 We know that,  Z score= (X-mu)/sigma

Q: According to the Empirical rule, 99.74% of the data would fall between what two values for a…

A: Given : Population mean : μ=438 Population standard deviation : σ=135

Q: Sketch the distribution of heights. What percentage of students are over 73.38 inches tall? What…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Suppose that shoe sizes of American women have a bell-shaped distribution with a mean of 8.47 and a…

A:

Q: According to the Center for Disease Control and Prevention (CDC), the mean life expectancy in 2015…

A: Given Data Population Mean,μ = 71.8 Population Standard Deviation,σ = 15.0 sample…

Q: The length of time for women’s high school volleyball games is normally distributed with a mean of…

A: Given Data Population Mean,μ = 53.0 Population Standard Deviation,σ = 6.0

Q: 2. A child is 40 inches tall, which places her at the 90th percentile of all children of similar…

A:

Q: The heights of men aged 20 to 29 are normally distributed with a mean of 69.2 inches and a standard…

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

Q: study indicates that​ 18- to​ 24- year olds spend a mean of 115 minutes watching video on their…

A:

Q: f the value of adult male cholesterol is a normal distribution with a mean of 198 and a standard…

A: The question is about normal dist. Given : Mean of cholesterol value of adult male ( μ ) = 198 Std.…

Q: Response time is an important statistic for measuring the effectiveness of a fire department, and is…

A: Given data,Mean μ=4.5sd σ=1.2P(4<X<6)=?

Q: A banker finds that the number of times people use automated-teller machines (ATMs) in a year are…

A: The mean is 40 and the standard deviation is 11.

Q: The heights of English men are normally distributed with a mean of 69.2 inches and a standard…

A: given mean  (μ= 69.2 )   standard deviation(σ)  = 4      z= (x-μ)/σ p(x<57.2) =P((x-μ)/σ  <…

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.