The Kamp family has twins, Rob and Rachel. Both Rob and Rachel graduated from college 2 years ago, and each is now earning $50,000 per year. Rachel works in the retail industry, where the mean salary for executives with less than 5 years' ex- perience is $35,000 with a standard deviation of $8,000. Rob is an engineer. The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both Rob and Rachel, and comment on your findings.

Q: The heights of adult men in America are normally distributed, with a mean of 69.7 inches and a…

A:

Q: The heights of adult men in America are normally distributed, with a mean of 69.2 inches and a…

A:

Q: Madeline Lee is a junior at Homestead High School, and she has talked to her guidance counselor…

A:

Q: For the 2017 romantic comedy film, The Last Jedi, 300,000 IMDB viewer ratings show a mean of 7.2…

A: The known values are, The value of k is,

Q: According to the researchers, the human experiment for salt is 220 mg per day which surpassed in…

A: Solution: Let X be the sodium content. From the given information, x-bar = 244 mg, S=24.5 mg and…

Q: A group of students wrote an entrance Math exam and the scores were normally distributed. The mean…

A: The scores were normally distributed with mean 750 and standard deviation 95 μ=750σ=95 Z-score is…

Q: In another company, every worker received a 5% raise. How does this affect the mean salary? The…

A: Every worker received a 5%. The mean defines that the center or average of the data and it is…

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: If a man is 6 feet 3 inches tall, what is his z-score (to two decimal places)? z =  b) If a woman…

A: ANSWER:-  We have given that, Height of adult men is normally distributed, with a  μ=69.7 and σ=2.63…

Q: Raul received a score of 77 on a history test for which the class mean was 70 with a standard…

A: for history test:mean(μh)=70standard deviation(σh)=4and xh=77For biology test:mean(μb)=70standard…

Q: In a certain​ city, the average​ 20- to​ 29-year old man is 69.4 inches​ tall, with a standard…

A:

Q: during the past few months one runner (John) averaged 12 miles per week with a standard deviation of…

A: Given For John x1 = 12 and σ1 =3 Coefficient of variation, C.V1 =σ1x1…

Q: What does having a higher standard deviation means?

A:

Q: If the scores on a test have a mean of 26 and a standard deviation of 4, what is the z score for a…

A: We want to Z-score

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

A: Solution

Q: Loretta, who turns  91  this year, has heard that the mean systolic blood pressure among the…

A:

Q: If a distribution has a mean of 50 and a standard deviation of 5, what value would be -1 standard…

A: Given, μ=50σ=5z=-1x=?

Q: Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly…

A: The random variable systolic blood pressure is normally distributed. The population mean is 120. The…

Q: The U.S. Bureau of Labor statistics reports that the average annual expenditure on food and drink…

A: Given Information: Mean μ=$5700 Standard deviation σ=$1500 To find the percentage of families who…

Q: Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly…

A: Givensample sie(n)=18sample mean(x¯)=128standard deviation(s)=22α=0.05

Q: A set of wrist watch prices are normally distributed with a mean of 76dollars and a standard…

A: From the provided information, Mean (µ) = 76 Standard deviation (σ) = 10 X~N (76, 10) Here X be a…

Q: A mathematics professor gives two different tests to two sections of his college algebra courses.…

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

Q: A livestock company reports that the mean weight of a group of young steers is 1300 pounds with a…

A: It is an important part of statistics. It is widely used.

Q: Ava scored a 92 on a test with a mean of 71 and a standard deviation of 15. Charlotte had a score of…

A: Given : For score 92  Test value, x = 92 population mean, μ = 71…

Q: Jeffrey, as an eight-year-old, established a mean time of 16.43 seconds for swimming the 25-yard…

A: Given n=15 x=16σ=0.8μ=16.43α=0.05

Q: When Christian runs the 400 meter dash, his finishing times are normally distributed with a mean of…

A:

Q: During 1 week, an overnight delivery company found that the weights of its parcels were normally…

A: A normal distribution is called a standard distribution if; 1. 68% of the values of the random…

Q: The mean score of the students on pre-assessments is 10 and the standard deviation is 2. What was…

A:

Q: The heights of adult men in America are normally distributed, with a mean of 69.1 inches and a…

A: GivenFor heights of adult menMean(μ)=69.1 inchesstandard deviation(σ)=2.66 inchesFor heights of…

Q: Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly…

A: As per bartby gaidline excite have to ans fast three subpart part only dear student please upload…

Q: The Richard family has twins Ron and Rebecca. Both Ron and Rebecca graduated from college 2 years…

A: Let X for  Ron earning from college 2 years ago X=$60,000, μx=$70,000, σx=$5,000Y=$60,000,…

Q: Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly…

A:

Q: Professor Ivy’s students have a Mean grade of 69.5 and a Standard Deviation of 6.5.  If Johnny has…

A: From the provided information, Mean (µ) = 69.5 Standard deviation (σ) = 6.5 Let X be a random…

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: The heights of adult men in America are normally distributed, with a mean of 69.8 inches and a…

A: The heights of adult men in America are normally distributed, with a mean of 69.8 inches and a…

Q: The Jackson triplets , Jenny , John and James , are in different algebra classes at city high . On…

A: The information about the final exams of Jackson triplets is provided as follows:   Xi μi σi…

Q: The heights of adult men in America are normally distributed, with a mean of 69.5 inches and a…

A: Given information We have given that the heights of adult men in America are normally distributed.…

Q: The heights of adult men in America are normally distributed, with a mean of 69.6 inches and a…

A: Given:   69.6 inches 2.63 inches 64.6 inches 2.55 inches Formula:

Q: The heights of adult men in America are normally distributed, with a mean of 69.4 inches and a…

A:

Q: If Sarah scored 78 on her history test which had a mean of 70 and a standard deviation of 3 and she…

A:

Q: Person A scores 78 on an exam that has a mean of 70 and a standard deviation of 5. Person B scores…

A: Given that.   X~N( μ , ?^2 )   Z-score =( x - μ )/?

Q: According to the U.S. Census, the average adult woman is the United States is 65 inches tall and the…

A: Given X is normal Distributed with mean µ = 65.0 and standard deviation σ = 3.0 Need to find Z score…

Q: Jared has a mean of 74 on his quizzes, with a standard deviation of 7. On his most recent quiz, he…

A: If the z-score lies within 2 standard deviation away from the mean, then the score is not unusual…

Q: The heights of adult men in America are normally distributed, with a mean of 69.7 inches and a…

A: formula for z-score is

Q: My Physics professor announced that top 18% will get A in the class.               Class mean is 72,…

A: Let X= score of a student  Given that X follows a normal distribution with mean=72 and standard…

Q: The scores of 800 students in a 100-item exam resemble a normal distribution with a mean of 78 and a…

A: Let X be the random variable from Normal distribution with mean (µ) = 78, standard deviation (σ) = 8…

Q: Loretta, who turns 91 this year, has heard that the mean systolic blood pressure among the elderly…

A: Given: μ = 115 x¯ = 133 s = 23 ∝ = 0.05 n = 10 The test hypothesis are, H0: μ = 115 H1: μ > 115.…

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: The heights of adult men in America are normally distributed, with a mean of 69.6 inches and a…

A: 69.6 2.66 64.2 2.56

Q: The heights of adult men in America are normally distributed, with a mean of 69.6 inches and a…

A: Z - score :  A Z-score is a numerical measurement that describes a value's relationship to the mean…

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.