You grow 20 crystals from a solution and measure the length of each crystal in millimeters. Your data is: 9, 2, 5, 4, 12, 7, 8, 11, 9, 3, 7, 4, 12, 5, 4, 10, 9, 6, 9, 4 According to the calculated standard deviation, do you think you will need to test for outliers?

Q: The number of goals scored by a college soccer team for a given season are 4, 9, 0, 1, 3, 12, 3, 7,…

A: The population mean is, μ=∑xN=4+9+0+1+3+12+3+7+4+5+8+212=5812=4.8333 The population mean is 4.8333.

Q: Among all the children in the playground, 95.4% are between 1.1 m and 1.7 m tall. Assuming that the…

A: Explanation:Here given the between values and calculate the mean and standard deviation In step2…

Q: A group of 30 students were sampled and measured their height. The average height was 168cm, with a…

A: Obtain the weight represents the 5th percentile. The weight represents the 5th percentile is…

Q: A normally distributed data set has a mean of 0 and a standard deviation of 2. What is the percent…

A:

Q: The population standard deviation           a. is always the same as the sample standard deviation.…

A: Solution: The standard deviation explains the dispersion in the data. The population standard…

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: The data set has 250 observations and has mean 100 and standard deviation 16. Approximately how many…

A:

Q: The volume of water in swimming pools in a local neighborhood is normally distributed. What is the…

A:

Q: A researcher measures the amount of food consumed by each dog in her lab. She finds that the mean…

A: It is given that mean amount of food is 12 oz and number of dogs is 16. The sum of squared…

Q: The average battery life of the Apple Iphone XR is 600 minutes. Th standard deviation is 30 minutes.…

A: As per bartleby guideline for more than three subparts only first three are to be answered please…

Q: A particular standardized test has scores that have a mound-shaped distribution with mean equal to…

A:

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

A:

Q: Let us suppose that the amount of bread consumed by adult Americans per day can be modeled by a…

A: Given: Mean(μ)  = 32 oz Standard deviation (σ) = 13.3 oz

Q: A normally distributed data set has a mean of 0 and a standard deviation of 2. What is the percent…

A: Introduction: The fashionable regular distribution, additionally called the z-distribution, is a…

Q: I. Consider the data set of the heights of all babies born in the Philippines during a particular…

A: Given that - The data set of the heights of all babies born in the Philippines during a particular…

Q: Explain the percentage slabs under the Standard Deviation Rule?

A: The percentage of slabs under the standard deviation rule or empirical rule is discussed as follows:

Q: a) The average height of sunflowers in a field is 64 in. with a standard deviation of 3.5 in. On a…

A:

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: The fuel efficiency, in miles per gallon, of 12 small utility trucks was measured. The results are…

A: For the given data Mean =? range =? s.d =?

Q: Here is a data set. 0,1,1,2,3,5,8,13 Use the table method and find the standard deviation.

A: Given numbers 0,1,1,2,3,5,8,13

Q: The mean and standard deviation of a population are 200 and 20, respectively. Suppose samples of…

A: Given : μ = 200 , σ= 20 and n= 36

Q: A class has a average height of 68 inches and a standard deviation of 2 inches. What percent of the…

A: Let x be the height which follows normal distribution with mean 68, and standard deviation 2. The…

Q: Approximately what percentage of normally distributed data will fall within 2 standard deviations…

A: Based on the Concept of Empirical Rule: About 68% of the area under the curve falls within 1…

Q: The final exam is worth 200 points with the usual 10% grading scale. Assume that the final exam…

A: Given Information: Mean (u) = 161 points Standard deviation (s) = 22

Q: A set of elementary school student heights are normally distributed with a mean of 105 centimeters…

A: Solution: Let X be the height of student. From the given information, X follows normal distribution…

Q: Chebyshev's Theorem states that the percentage of measurements in a data set that fall within three…

A: The Chebyshev's theorem provides bounds on the probability for distributions for which mean and…

Q: A class of 150 students took a final exam in mathematics. The mean score was 72% and the standard…

A: Here, µ = 72%, σ = 14%, and n = 150.

Q: The data represent the number of days off per year for a sample of individuals selected from ten…

A: Solution

Q: The mean height of the roses grown in the garden is 28 cm and the standard deviation is 3 cm. If the…

A: GivenMean(μ)=28standard deviation(σ)=3

Q: How many more samples do you need to collect to estimate the mean to within 0.005 mm with 95%…

A: The sample standard deviation is can be obtained by using EXCEL function "=STDEV.S(A1:A16)". The…

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: Find the proportion of Normally distributed observations with a zz-score above -2.84. Give your…

A: Given the proportion of Normally distributed observations with a z-score above -2.84

Q: Companies who design furniture for elementary school classrooms produce a variety of sizes for…

A:

Q: Report anything you noticed about the way the graphs were shaped, how they were different as the…

A: Considering the Reese’s Pieces candies manufactured by Hershey are 25 candies: Physical Sample:…

Q: The data set has 80 observations and has mean 30 and standard deviation 5. Approximately how many…

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: Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if…

A:

Q: A population has a mean of 45 If 6 points are added to each score What is the mean for the…

A:

Q: Find the range and the standard deviation (correct to two decimal places). 84, 96, 104, 104, 107…

A: Obtain the value of range. The value of range is obtained below as follows:   From the information,…

Q: A normally distributed data set has a mean of 0 and a standard deviation of 2. What is the percent…

A: Here I am providing my handwritten solution

Q: Old Faithful is a famous geyser at Yellowstone National Park. From a sample of 40 eruptions, the…

A: Empirical rule of distribution can be applied if the data is normally distributed. But in the…

Q: The weight of 100 female students aged 15 to 20 years have a mean of 120 pounds and a standard…

A: Solution: Given data: Sample size (n) = 100 Mean = 120 pounds Standard deviation = 6 pounds

Q: The age of student at a university are normally distributed with a mean of 20. What percentage of…

A:

Q: A normally distributed data set has a mean of 0 and the standard divitation of 2. What is the…

A: Given,mean(μ)=0standard deviation(σ)=2

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

A:

Q: A doctor in the oncology department of a hospital surveyed the breathing rate of cancer patients.…

A:

Q: A gambling casino records and plots the mean daily gain or loss from 5 blackjack tables.  The…

A: It is given that the, There is a gambling casino that records and plots the mean daily gain or loss…

Q: Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if…

A: Given, Smaller model: population standard deviation ( σ1) = 34 sample mean (x̄1)  = 125 sample…

Q: A class of 150 students took a final examination in science. The mean score was 72% and the standard…

A:

Q: Suppose we changed the definition to the average number of dots after forty rolls. Would this…

A: