Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 699 babies born in New York. The mean weight was 3458 grams with a standard deviation of 908 grams. Assume that birth weight data are approximately bell-shaped. Estimate the number of newborns who weighed between 2550 grams and 4366 grams. Round to the nearest whole number. The number of newborns who weighed between 2550 grams and 4366 grams is

Q: Entrance exam scores at Cititon University are normally distributed with a mean of 558 and a…

A: Given: X = entrance exam scores X is Normally distributed Mean of X = 558 Standard deviation of X =…

Q: a successful basketball player has a height of 6 feet 9 inches, or 206 cm. Based on statistics from…

A: Given,           Z -score=4.45           A basket ball player has a height of  6 feet 9…

Q: A college entrance exam company determined that a score of 21 on the mathematics portion of the exam…

A: From the provided information, Sample size (n) = 150 Sample mean (x̅) = 21.4 Sample standard…

Q: The operation manager at a tire manufacturing company believes the mean mileage of a tire is

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Q: in New York State, the mean salary for high school teachers in 2017 was $104,210 with a standard…

A: given X , follow normal distribution with μ=104210σ=9660

Q: Twenty-nine percent of adult Internet users have purchased products or services online. For a random…

A: It is given that 29% of the users purchase online. Therefore, probability of a randomly selected…

Q: Entrance exam scores at Cititon University are normally distributed with a mean of 202 and a…

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Q: Assume that the mathematics scores on the SAT are normally distributed with a mean of 500 and a…

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Q: The annual income of residents in a county is $42,000 with a standard deviation of $10,000.  Under…

A: From the given information, the distribution of annual incomes is normally distributed with mean…

Q: Ojai is a weather station in the state of California and Seabrook is a weather station in the state…

A: Given information- We have given the data of noontime temperatures recorded among weather stations…

Q: Scores turned in by an amateur golfer at the Bonita Fairways Golf Course in Bonita Springs, Florida,…

A: Given information- We have given golfers score in two different years. Calculating mean and standard…

Q: A data set has a mean of 60.4 and a standard deviation of 5.2    Is a value of 45 unusual? Is a…

A: From the provided information, Mean (µ) = 60.4 Standard deviation (σ) = 5.2 X~N (60.4, 5.2)

Q: Dougal is filling out college applications that require either a SAT math score or ACT math score.…

A: Given Information: Dougal has an SAT math score of 610 and an ACT math score of 27. Mean SAT math…

Q: What is the difference between deviation and standard deviation?

A: Before we know the difference between deviation standard deviation, we should know about both these…

Q: The average annual income of 10 million people working in Manila is P100,000. The standard deviation…

A: It is given that, Population mean (μ) = 100,000 Population standard deviation (σ) = 2500 Sample size…

Q: Jone works for a Italian dramatic agency whose workers had an average income this past year of…

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Q: Entrance exam scores at Cititon University are normally distributed with a mean of 792 and a…

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Q: Lions gate produces and distributes about 30 movies per year. On average ,these movies rake in about…

A:

Q: A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from…

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Q: Adult Golden Retrievers have a mean weight of 64 pounds with a standard deviation of 8 pounds. If…

A: In this scenario, it is known that the  mean weight is 64 pounds with a corresponding standard…

Q: Births weights in Norway are normally distributed with a mean of 3570g and a standard deviation of…

A: If a random variable x has a distribution with mean µ and standard deviation σ, then the z-score is…

Q: What is the difference between what the z score measures and what the standard deviation measure?

A: z score is standard score and the formula for finding z score is,

Q: The weight of a division I college football player has a mean of 255lb and a standard deviation of…

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Q: The typical college freshman spends an average of ?=150minutes per day, with a standard deviation of…

A: Solution: Let X be the time on social media. From the given information, X follows normal…

Q: Runzheimer International publishes data on overseas business travel costs. It reports that the…

A: The standard deviation will be obtained as given below:

Q: To set aside funds for fuel for mid-level and senior managers, a large financial institution col-…

A: Class(1) Frequency (f)(2) Mid value (x)(3) f⋅x(4)=(2)×(3) cf(6) 0-10 4 5 20 4 10-20 23 15 345 27…

Q: A manager is interested in finding the average number of sales per day at a sporting goods store. If…

A: Obtain the sample size. The sample size is obtained below as follows: The formula of sample size is,…

Q: Skye High School has a total of 500 graduates.  The mean SAT score of Skye High School graduates is…

A: Given data,μ=947σ=205P(X≥1000)=?

Q: For a sample of employees at a manufacturing company, their age of retirement was recorded and is…

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Q: What is the lowest standard deviation value ?

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

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: Eureka is a weather station in the state of California and Seabrook is a weather station in the…

A: Given information: Temperature recorded at Eureka was 240 Celsius. Temperature recorded at Seabrook…

Q: Suppose this average cost was based on a sample of 55 persons who had been involved in car crashes…

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Q: high school students across the nation compete in a financial capability challenge each year by…

A: It is given that, the students who score in the top 13 percent are recognized publicly for their…

Q: According to a study, the salaries of registered nurse are normally distributed with a mean of 56310…

A: Given,mean(μ)=56310standard deviation(σ)=5038

Q: Total enrollment in the Kalamazoo Public Schools have a mean and standard deviation of 11,957 and…

A: We have given that  Mean = 11957  and standard deviation = 13 In next five years so, every…

Q: What is the standard deviation?

A: We have to calculate the SD for the given frequency distribution.

Q: In preparation for the upcoming school year, a teacher looks at raw test scores on the statewide…

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Q: How does a nonzero constant number c change a standard deviation problem?

A: Standard deviation is independent of change of origin but it affects by the change of scale.

Q: A successful basketball player has a height of 6 feet 77​inches, or 201201 cm. Based on statistics…

A: Given information- Height of a player = 201 cm Z-score = 3.743 We know that standard height is given…

Q: In a recent study on world​ happiness, participants were asked to evaluate their current lives on a…

A: X follows a Normal distribution with mean = 5.5 and S.D = 2.3 Then z=(x-mean)/SD = (x-5.5)/2.3…

Q: What is the weight of the newborn elephant at the 33rd percentile? Round to the nearest whole number

A: Given:   birth weights of newborn elephants = X X is Normally distributed mean of X = 160 pounds…

Q: The college board reports that in a recent year, the mean mathematics SAT score was 514, and the…

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Q: College Professors have incomes with a standard deviation that is less than $21,000. A recent study…

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Q: Find the mean and standard deviation of the original set of data.

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Q: In preparation for the upcoming school year, a teacher looks at raw test scores on the statewide…

A: Formula of z score : z = x - μσ

Q: A livestock cooperative reports that the mean weight of yearling Angus steers is 1120 pounds.…

A:

Q: The best male long jumpers for State College since 1973 have averaged a jump of 263.0 inches with a…

A: Given, xM=263 inchesσM =14 inches xF=201.2 inchesσF=7.7 inches Joey's average = 275 inches Carla's…

Q: What is the Standard Deviation?

A: You want to know about standard deviation.We will deeply understand the meaning of standard…

Q: 1. Over the last several years, the use of cellphones has increased dramatically. An article in USA…

A: Given  Talking time   Sample size Mean Standard deviation Cell phone Men 100 372 120 Women…