8- 81 82 82 84 86 Final Exam Score 84 86 Final Exam Score (i) (ii) a) (ii) has a larger standard deviation than (i). O b) Both histograms have the same standard deviation. C) There is no way to determine which one is larger. O d) (i) has a larger standard deviation than (ii). 6. 2. Frequency 6. 4- 2- Frequency

Q: The average birth weight of elephants is 220 pounds. Assume that the distribution of birth weights…

A: Solution-: Given: μ=220,σ=50 We want to find the birth weight of elephants at the 90th percentile.

Q: Assume that the results are normally distributed. Pedro took an exam in a class in which the mean…

A: The formula for z-score is z = x - μσ where μ is the mean and σ is the standard deviation.…

Q: A student has taken a 50-point exam and wants to know how his score of 38 compares to the scores of…

A: It is given that Mean = 40 Standard deviation SD = 4 Score X = 38

Q: Find the sample standard deviation.

A: Given that:n= 12  Sample size

Q: The highway mileage (mpg) for a sample of 8 different models of a car company can be found below.…

A:

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9, 4, 7, 1, 4.

A: Considering the scores as population. The population mean is, μ=∑XN=9+4+7+1+45=255=5 Thus, the…

Q: Calculate the mean, standard deviation, and variance for the following five scores: 9,4,7,1,4.

A:

Q: According to data for a​ population, 3-year-old boys have a mean height of 38 inches and a standard…

A: given data normal distributionμ = 38 inchesσ = 2 inchesfor x = 42 inchespercentile = ?

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 should be used to compare distributions of two or more variables?

A: Boxplot : A boxplot is a graphical method that is used to visualize the distribution of data based…

Q: a bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean…

A: We have to find 60th percentile.

Q: Use the normal distribution of heights of adult​ women, which has a mean of 168 centimeters and a…

A: Mean(µ) = 168Standard deviations (σ) = 5X ~ N (µ, σ )= N(168,5)

Q: A sample of the number of sick days used by employees at a clinic is as indicated: 0,    0,    1,…

A: Given data 0,0,1,1,2,4

Q: Find the sample standard deviation. The top five scores on last semesters midterms were 90 97 100 90…

A: The question is about measures Given : Data - 90, 97, 100, 90, 93   To find : Sample std. deviation

Q: What is a common way to measure the center of a distribution of data?   a. scatter plot…

A: The objective of the question is to identify a common statistical measure that is used to determine…

Q: Compute the mean, median, Variance, and the standard deviation for the data below: 3,2 ,3, 4, 3…

A:

Q: The relative frequency histogram represents the length of phone calls on​ George's cell phone during…

A: A histogram is a visual representation of continuous data.

Q: List a z score value that is three standard deviations away from the mean.

A:

Q: In a standardized exam the mean score is 400 with a standard deviation of 50. Assume the scores…

A: Solution

Q: give the sample standard deviation of this data set: 20, 25, 35, 40

A: Sample Standard deviation:   If the standard deviation is calculated for sample then it is called as…

Q: Use the normal distribution of IQ scores, which has a mean of 75 and a standard deviation of 18 ,…

A: X~N(μ=75,σ=18)

Q: Draw two normal curves that have the same mean but different standard deviations. Describe the…

A:

Q: The heights of women aged 18 to 24 are approximately normal with a mean of 65 inches and a standard…

A: Given that  X~N(μ= 65 , σ= 2.5 ) μ= 65 , σ= 2.5 Formula for Z-score Z=(X-μ)/σ

Q: Identify the​ t-statistic and P-value.

A: The sample size n is 23.

Q: Consider the data:  10, 7, 9, 13, 11, 13, 14.  (Show your work.) a)Determine the mean.…

A:

Q: Roll a pair of die 36 times, and draw a bar graph of all the outcomes. Using the data, find the…

A: In question,  Given that a pair of dice is rolled 36 times. Then we'll find mean Variance and…

Q: 20, 23, 25, 28, 30, 32, 35, 35 Mean = Median = Mode = Standard Deviation II

A:

Q: The lifespans of lizards in particular zoo are normally distributed. The average lizard lives 3.1…

A: It is given that the lifespans are normally distributed with an average lifespan of 3.1 years.   It…

Q: Mario scored 82 on his history final. The class mean was 78 with a standard deviation of 3 points.…

A:

Q: The average birth weight of elephants is 230 pounds. Assume that the distribution of birth weights…

A: Given,mean(μ)=230standard deviation(σ)=50

Q: korynn is calculating the variability in her data by measuring the average distance of scores from…

A: Given: korynn is calculating the variability in her data by measuring the average distance of scores…

Q: the scores in a sample that has a standard deviation of z

A: The standard deviation is used to calculate the variability of the data set. It tells us about the…