Arm Span (cm) Student X - X (x – x)² Abdulah 153 Davina 162 Lorne 187 Nial 178 Carlos 175

Q: If the average weight for cats is 12 pounds and the standard deviation is 2 pounds. 68 percent of…

A: Given data: If average weight for cats = 12 pounds standard deviation = 2 pounds. To find: 68% of…

Q: a history class has 75 members. if there is a 12% absentee rate per class meeting, find the mean and…

A:

Q: Find the standard deviation of the observations 5, 11, 18, 25 and 41, using mutual differences…

A: Given: data data values  Xi: 5,11,18,25,41  Then to find standard deviations using mutual difference…

Q: statistics professor reported that the mean score in a recent quiz is 72 and the standard deviation…

A: Solution

Q: What will be the interpretation if correlation (r) has a value of -.5439? At what percent does the…

A: Correlation coefficient "r" measures linear relationship between between two variables. It lies…

Q: Will you provide an example of Standard Deviation math problem and solution?

A: Standard deviation:The standard deviation indicates by how much each observation differs from a…

Q: Suppose there are two groups of students. Group A and Group B both have an average height of…

A: Here there are two groups of students are given named as A and B. And the given parameters of A and…

Q: suppose data set A has a mean of 12 and a standard deviation of 2.5  Data set B has a mean of 12…

A: The formula for coefficient of variation is, CV = (s/ x̅ ) × 100%, where s is the sample standard…

Q: What is the Z value for a value of X = 60?

A:

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: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: Given information,             Standard deviation (σ) = 2.9             Error (E) = 0.4 To know how…

Q: The mean and standard deviation of quiz scores of a group of students are 28 and 4.1 respectively.…

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Q: For a population, a deviation score is computed as X – σ.

A: What is Deviation score ? Deviation score is basically a degree of score from which a raw score is…

Q: Do you agree that the standard deviation can measure variable relationships? Explain

A: The term standard deviation was introduced by karl pearsons in 1893. It is one of the most commonly…

Q: The mean score and the standard deviation in the Statistics test are respectively equal to 80 and…

A: Normal distribution is a continuous distribution which has many real life applications. Normal curve…

Q: A health psychologist is interested in the potential effect that a change in career focus can have…

A: Given that: Average systolic blood pressure=μ=142 Standard deviation=σ=13 n=23 x¯=131

Q: If a set of numbers has a standard deviation of zero, what can you say about the numbers?

A: The standard deviation indicates that amount of deviation of data points from the mean.

Q: According to the U.S. Census Bureau, the mean of the commute time to work for a resident of New…

A:

Q: Suppose the mean percentage in algebra 2b is 70% and the standard deviation is 8% what percentage of…

A: Solution

Q: Roel's score in Math was 90 with a mean of 85 and a standard deviation of 1.5. His score in English…

A:

Q: A successful basketball player has a height of 6 feet 4​inches, or 193cm. Based on statistics from a…

A: The z-score identify that the value how many standard deviations from the mean. If the z-score is…

Q: The mean of data set A is 42. The mean of data set B is 47. The mean absolute deviation of both sets…

A: Mean of data set A =42 Mean of data set B=47  Mean absolute deviation of A and B =2.5 To find :-…

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A:

Q: The arithmetic mean and the standard deviation of a set of 9 items are 43 and 5 respectively . If an…

A:

Q: a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 34 beats per…

A:

Q: If a variable has a mean of 53, a median of 62, and a standard deviation of 4, What is its skewness?

A: The formula to find skewness is given below:

Q: The scores in a senior high school entrance exam are normally distributed with mean u = 78.5 and a…

A: Given: μ=78.5σ=5Normally distributed

Q: Assume that a data for pulse rates of 50 participants is ollected. The mean pulse rate has the mean…

A: Range rule of thumb: The values are significant if it is lies within 2 standard deviations away from…

Q: The average chef at a restaurant earns $17 an hour with a deviation of $1.75. What are the chances…

A:

Q: In Pittsburgh, PA, about 56% of the days are cloudy. June, which has 30 days, is to be considered.…

A: Hey there! Thanks for posting the question. Your question has more than three sub-parts. However, we…

Q: The mean price of the fish in a pet shop is $2.93, and the standard deviation of the price is $0.59.…

A:

Q: An engineer wishes to determine the width of a particular electronic component. If she knows that…

A: From the provided information, Population standard deviation (σ) = 3.6 mm Confidence level = 90%…

Q: Find and Stondard deviation X. mean of

A: Let , the probability density function of X is given below, = 0 ; otherwise Our aim is to find the…

Q: The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words…

A: Given: μ= 125 σ = 24 The formula pf z score is, Z=X-μσ The value of z at the 80th percentile, i.e.,…

Q: Part II. The incomes of the factory workers in a certain province are normally distributed with a…

A: Given mean, μ = 100 Standard deviation, σ = 10 X ~ N(μ, σ)

Q: Do you agree that standard deviation can measure variable relationships?

A: Yes, Standard deviation can measure variable relationships.

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

A: The empirical rule should be used in this problem.

Q: An engineer wishes to determine the width of a particular Electronic Component. If she knows that…

A: Given,Standard deviation σ = 3.8confidence level is 90%Margin of Error E = 0.2

Q: A school district requires all gradu 74 and the standard deviation wa

A: The normal distribution is one of the important continuous probability distribution that is used to…

Q: It is believed that the mean number of chronic conditions amongst the elderly is 1.75. A physician…

A: Introduction: Parameter: A parameter is a population characteristic of interest in a statistical…

Q: If your score on your next statistics test is converted to a z-score, which of these 2- scores would…

A: Given: Z-scores: -2, -1, 0, 1, 2. The height converts to the z score is=4.07

Q: The daily water usage per person in Davao City is normally distributed with a mean of 18 gallons and…

A: Mean = 18 Standard deviation = 4

Q: Solve step by step in digital format Suppose that the average income of the engineers hired at…

A: Given: μ = 17000 σ = 3000   Formula Used: Z-score = X-μσ

Q: A researcher reports that the average IQ level of students in Alaminos City  National High School…

A: Since n is less than 30 and population sd unknown,  utilizing t test for single mean.

Q: On an intelligence​ test, the mean number of raw items correct is 236 and the standard deviation is…

A: a) The IQ score have a mean 100 and standard deviation of 15. The z score corresponds to IQ score…

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

A:

Q: freedom, the standard devi

A: yes , standard deviation of population is estimated without the degree of freedom . We know that…

Q: IF your mean is 832 and your standard deviation is 86, what values like in the 36% range?? How do…

A: Given Data: Mean=832 SD=86

Q: The marks on a statistics test are normally distributed with a mean of 62 and a standard deviation…

A: The Z-score of a random variable X is defined as follows: Z = (X – µ)/σ. Here, µ and σ are the mean…