Mean serum cholesterol level for US Adults was 200 with standard deviation of 40.6. A random sample of 106 adults is chosen.  The probability that the same mean cholesterol level is greater than 210 is  The probability that the same mean cholesterol level is between 189 and 197 is  It would or would not be unusual for the same mean to be less than 196 since the probability is

Q: What is the probability that your score on an exam will be less than 65, if the mean on the exam is…

A: Let X be a continuous random variable of score on the exam is normally​ distributed with a mean of…

Q: Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol…

A: Given data: Mean =  51.8 mg/dL Standard deviation  = 14.3 mg/dL To find: Find the probability that…

Q: The tallest living man at one time had a height of 261 cm. The shortest living man at that time had…

A:

Q: Which of these two men had the height that was more​ extreme

A: Let , X : height of the tallest man and Y : height of the shortest man Since , the distribution of…

Q: The National Sleep Foundation surveyed representative samples of adults in six different countries…

A: we have given that  n1=250 ,n2=250 ,xbar1=391 ,xbar2=426 ,s1=20 ,s2=44 alpha=0.05

Q: The class mean for the exam was 82 with a standard deviation of 6.  There are 37 students in the…

A: We have given that, Mean = 82 , standard deviation σ = 6  sample size n = 37   Standard error of the…

Q: what if the standard deviation was 30, instead of 60

A:

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: The test scores in a class are normally distributed with a mean score of 77. if the standard…

A: The distribution of test score are normally distributed with mean of 77. Now consider the standard…

Q: The amount a household spends on groceries per week is normally distributed with a mean of $250 and…

A: given data, normal distributionμ=250σ=45n=121probability the sample mean spent on groceries per week…

Q: On a standardized examination, Laura received a score of 83, which was exactly 2 standard deviations…

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Q: Marine biologist at Nova Southeastern University spent three months on a research expedition tagging…

A: The given information is: For females,  Sample sizen1=142 Sample meanx¯1=68.3 Sample standard…

Q: The results of a common standardized test used in psychology research is designed so that the…

A:

Q: there are 300,000 people review  for the movie  pupulation mean is 7.2 stars and standard deviation…

A:

Q: A successful basketball player has a height of 6 feet 8 ​inches, or 203 cm. Based on statistics from…

A: Consider X is a random variable defined as the height of a successful basketball player.The provided…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: It is given that the mean and standard deviation are 145 and 30.

Q: Suppose that IQ scores have a bell shaped distribution with a mean of 101 and a standard deviation…

A: The IQ scores have a bell shaped distribution with a mean of 101 and a standard deviation of 17.

Q: The average score of all golfers for a particular course has a mean of 76 and a standard deviation…

A: We have given information with the usual notation, Let X denote the score of golfers for a…

Q: For a standardized psychology examination intended for a psychology. Major is the historical data…

A: sample size(n)=35mean(μ)=510standard deviation(σ)=170

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

A:

Q: A recent survey found that 61​% of all adults over 50 wear glasses for driving. In a random sample…

A: A recent survey found that 61​% of all adults over 50 wear glasses for driving. In a random sample…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: Consider X be a random variable which follows normal distribution indicating the score earned on a…

Q: In my Biology Class, to pass the course the minimum score must be 67. Biology class has a mean of…

A: Let, X= scores of the biology class Given that X follows a normal distribution with mean= 81 and…

Q: William revealed that he makes 1,000,000 dollars annually. The average annual income in the country…

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Q: Pharmacist lilly  is researching how long the active ingredient in a particular drug is measured in…

A: 1.   Denote μ as the population mean time of the drug is active in the liver of people after oral…

Q: The results of a common standardized test used in psychology research is designed so that the…

A: The standard normal value helps to understand the number of deviation of observations from the mean.…

Q: Pyramid Lake is en the Paiute andan Reservation in Nevada. The lake is famous for cuthreat trout.…

A: a)   Assume that μ is the true mean length of trout caught in Lake P.

Q: A set of math test scores has a mean of 70 and a standard deviation of 8.  A set of English test…

A: Consider that the mean and standard deviation of a random variable x are µ and σ, respectively.…

Q: Two teachers have a friendly rivalry. They want to know which of their students did better on their…

A: Given, For Chemistry teacher No of students = n = 49 Mean = m = 68 National Mean = μ = 65 Standard…

Q: A line for tickets to a broadway show had a mean waiting time of 20 minutes with a statistic…

A: Given: Mean,  μ=20 Standard deviation, σ=5 Sample size, n= 200 Use normal approximation here, the…

Q: A study was done for the job satisfaction. In the first study, an Engineer was score 72 with a mean…

A: Given data, For first studyScore (x)=72μ=80σ=12For second studyScore (x)=19μ=20σ=5

Q: The IQ score that separates the bottom 15% from the top 85% is P,5 =. (Round to the nearest…

A:

Q: The average score of all golfers for a particular course has a mean of 64 and a standard deviation…

A:

Q: A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. What…

A: Given Information:  Mean (u) = 75  Standard Deviation (s) = 8  To find: Exam scores that separates…

Q: ow that a random individual will fall between 107 and 103 .if the mean IQ is 100 the standard…

A: Consider a random variable X which represents IQ of the individual.    X follows normal distribution…

Q: s 6 hours a day. If college students were randomly selected, find the probability that the mean…

A: Let X be the random variable from normal distribution with mean (μ) = 6 hours and standard deviation…

Q: A researcher believes the mean weight of male turtles is more than 205 pounds, she samples 18 male…

A: Denote μ as the population mean weight of male turtles.   The claim is that the mean weight of male…

Q: Lucille, Rocio, and Cristina are all taking College Mathematics but from different professors. They…

A: Lucille's class had an average grade of 85 and the standard deviation was 3. Lucille earned 89.5 on…

Q: Suppose that heights of women in Utah are normally distributed with a mean of 74 inches and a…

A:

Q: What is the z-score for this raw score?

A:

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

A:

Q: The tallest living man at one time had a height of 220 cm. The shortest living man at that time had…

A: Given that  mean of 173.88 cm and a standard deviation of 5.13 cm tallest living man at one time had…

Q: It has been found that with the standard dosage of a drug, the change in people’s uric acid levelis…

A: Given X is normal Distributed with mean µ = 240.0 and standard deviation σ = 60.0 now will using…

Q: Who has the larger dog relative to their breed?

A: It is given that For Golden Retriever, X = 70.2, mean = 67 and SD = 2.5 For St Bernard, X = 215,…

Q: the mean IQ of tweleve year old boys in a school district is 118; the standard deviation is 18. if a…

A: Obtain the probability that the mean of the sample is greater than 120. The probability that the…

Q: The tallest living man at one time had a height of 244 cm. The shortest living man at that time had…

A: Given : Heights of men at that time had a mean of 174.73 cm and a standard deviation of 6.23 cm.

Q: Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol…

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: The results of a common standardized test used in psychology research is designed so that the…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.