Newborn babies: A study conducted by the Center for Population Economics at the University of Chicago studied the birth weights of 601 babies born in New York. The mean weight was 3280 grams with a standard deviation of 912 grams. Assume that birth weight data are approximately bell-shaped. Estimate the number of newborns who weighed between 1456 grams and 5104 grams. Round to the nearest whole number. The number of newborns who weighed between 1456 grams and 5104 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: Assume the average (mean) number of minutes a group of people meditate is 20 minute per day and has…

A: Solution: Let X :  A group of people mediate.  Assumed X be the normal distribution with mean 20…

Q: The weekly salaries (in dollars) for some registered nurses are listed below: 774   446  1019  795…

A: Given data,   774   446  1019  795  908  667  446  960     The objective is to find the mean,…

Q: According to the Empirical rules rule, if there are 500 observations in a mound shaped data set the…

A: The empirical rule, also referred to as the three-sigma rule or 68-95-99.7 rule, is a statistical…

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

A:

Q: A. In a test of a lifelong brand of tires, a survey revealed that the mean life was 35,000 miles and…

A: Normal Distribution: A continuous random variable X is said to follow Normal distribution with…

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

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

A: The sampling distribution of sample mean follows the normal distribution, if the population is…

Q: A professor at a local university noted that the exam grades of her students were normally…

A: Here we need to find x such that P(X>x)=0.0793, where X~N(73,11).

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…

A:

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

A:

Q: If a data set has a mean of 80 and a standard deviation of 10, calculate + 1.5 standard deviations

A: Here, the data set has a mean of 80 and a standard deviation of 10.

Q: The average full-time faculty member in a post-secondary degree-granting institution works an…

A: In a bell shaped distribution, 68% items falls within one standard deviation of mean, 95% items…

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: A professor at a local university noted that the exam grades of her students were normally…

A: Given,mean(μ)=73standard deviation(σ)=11

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: 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: what is the mean and standard deviation?

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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…

A:

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: A nutritionist claims that the mean tuna consumption by a person is 6 pounds per year. A sample of…

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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…

A:

Q: A student scored 76 on a general science test where the class mean and standard deviation were 82…

A: For Science x¯=82s=8x=76 z=x-x¯s=76-828=-0.75

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: The heights of adult men in America are normally distributed, with a mean of 69.3 inches and a…

A:

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: 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: Which would you expect to be the larger standard deviation: the standard deviation of the weights of…

A: Consider,  the standard deviation of the weights of 25 students in a first-grade class, or the…

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: Find the standard deviation for this data set. if a one goal hockey game was added to this data set,…

A: From the plot representing the number of goals scored per game, there are three games in which three…

Q: The variance in a data set is 427. Find the standard deviation. Round to two decimals.

A: The random variable is X. It is given that the variance is 427. We have to find the standard…

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…