68% of statistics 95% of statistics 99.7% of statistics 4 Mean ▲ Mean 3 st dev 1 st. 1 st. 2 st. dev below 2 st dev above 3 st. dev below above dev dev below above The number of potholes in any given 1-mile stretch of freeway pavement in Pennsylvania has a Normal distribution. This distribution has a mean of 63 potholes, and a standard deviation of 7 potholes. Using the Empirical Rule, what is the approximate percentage of 1-mile long roadways with potholes numbering between 56 potholes and 70 potholes? % 4 Mean

Q: sume that a normal distribution of data has a mean of 24and a standard deviation of 6. Use the…

A: Given that  The data is normally distributed with Mean (μ) = 24 Standard deviation (σ) = 6  We know…

Q: A distribution of measurements is relatively mound-shaped with a mean of 60 and a standard deviation…

A: From the provided information, Mean (µ) = 60 Standard deviation (σ) = 14

Q: The average birth weight of domestic cats is about 4 ounces. Assume that the distribution of birth…

A: The provided information is as follows:The average birth weight of a domestic cat is 4 ounces.The…

Q: The cholesterol levels of young women aged 20 to 34 have an approximate Normal distribution with…

A: Given: μ=185σ=40middle 68% of the choesterol levels would be between ?

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

A:

Q: Assume that a normal distribution of data has a mean of 23 and a standard deviation of 4. Use the…

A: Answer:- Given, Mean, µ = 23  Standard deviation, σ = 4  Using formula,  According to the empirical…

Q: Assume that the number of pieces per bag has a mean of 72 with a standard deviation of 1.use the…

A: We have to find given probability by using emperical rule...

Q: A distribution consists of three requencies 250, 300, 350 having neans 30, 15 and 20 and standard…

A: We have given that  Size N1=250 , N2=300, N3=350 Sample mean xbar1 =30 , x2=15 , x3=20 Standard…

Q: Assuming that the raw score of 140 students in Calculus follows a normal curve distribution with a…

A: From the provided information, Population size (N) = 140 Mean (µ) = 44.3 Standard deviation (σ) =…

Q: The effect size is a measure of the magnitude of a treatment effect in standard deviation units.…

A: Given that, The effect size is a measure of the magnitude of a treatment effect in standard…

Q: distribution,The average sales = 225. Standard  deviation = 40 The  upper limit for  the  middle…

A: According to the empirical rule, for normal distribution, approximately 68% of the observations fall…

Q: A normal distribution of scores has the following: mean = 120 standard deviation = 20 What range of…

A: given data normal distribution μ = 120σ = 20 for middle 60%  range = ?

Q: In which distribution shape does the Standard Deviation Rule apply?

A:

Q: A process window is set so that 95.44% of product passes the process spec. In order to pass, the…

A: question: A process window is set so that 95.44% of product passes the process spec. In order to…

Q: Given the mean of a normally distributed data set is 25, with  standard deviation of 5, what percent…

A: We will standardize the normal variable and then use standard Normal table to find the required.

Q: In a medical mission among adults, the distribution of cholesterol readings, in mg/dl is normally…

A:

Q: Almost all medical schools require applicants to take the Medical College Admission Test (MCAT).  To…

A: It is given that the mean is 25 and the standard deviation is 6.5.

Q: 6-The mean number of hours an American worker spends on the computer is 3.1 hours per workday.…

A: Mean(μ)=3.1 Standard deviation(σ)=0.5

Q: normal distribution has a mean of 80 and a standard deviation of 14. Determine the value above which…

A: Given that  X~N(μ= 80 , σ= 14 ) μ= 80 , σ= 14 Formula for Z-score Z=(X-μ)/σ

Q: A survey found that women's heights are normally distributed with mean 62.1  inches  and standard…

A: Let "X" be the men who meet the height requiremnet. Refer Standard normal table/Z-table OR use…

Q: are normally distributed with a mean of 100 and a standard deviation of 15. What IQ is in the 90th…

A: Kwe have to find out given probabiity..

Q: mean length of 25 cm. Because of the variability in the manufacturing​ process, the lengths of the…

A: Population mean μ =25 Population standard deviation =0.08

Q: Distribution of weights of 24 month old girls is somewhat normal with a mean weight 26.4 pounds and…

A:

Q: A normal population has the mean m=70 and standard deviation 20. what proportion of the population…

A: Obtain the proportion of the population is greater that 95. The proportion of the population is…

Q: The weight of domestic cats fits a normal distribution with a mean weight of 8.9 lbs and a standard…

A: It is given that the mean is 8.9 and the standard deviation is 1.1.

Q: Suppose the durations of human pregnancies follow a mound-shaped distribution with a mean of 266…

A:

Q: The MF exam has a population mean of 500 and a standard deviation of 200. What are the scores for…

A: Let X=MF exam scores We have given information, The population mean μ=500 And population standard…

Q: Assume that a normal distribution of data has a mean of 16 and a standard deviation of 3.Use the…

A: Population mean =16  Standard deviation =3  We have to find the percentage of values lies

Q: e heights of people in a certain population are normally distributed with a mean of 68 inches and a…

A: Given that.   X~N( μ , ?^2 )   μ=68     , ?=3.8   , n=43

Q: Based on a recent study, the pH level of the arterial cord (one vessel in the umbilical cord) is…

A:

Q: Heights of Swedish men follow a normal distribution with mean 72 in and standard deviation 5 in. How…

A: Given Population mean μ=72, standard deviations σ=5  Let X be the Heights of Swedish men follow a…

Q: A process is in statistical control with a mean of 79.5 mm and a standard deviation of 1.85. The…

A: The mean of the data is 79.5 mm. The standard deviation of the data is 1.85 mm. The upper…

Q: A normal distribution has a mean of 3.7 and a standard deviation of 2.3. What is the median?

A: From the provided information,