A researcher wants to estimate the mean blood cholesterol level of young men ages 15-25 with a 84.62% confidence interval. The blood cholesterol level of young men follows a Normal distribution with standard deviation ?σ = 45 mg/dl. How large a sample would the researcher need to take to estimate the mean blood cholesterol to within 9 mg/dl? a sample of at least ___ people

Q: The annual per capita consumption of oranges (in pounds) in the United States  can be approximated…

A: It is given that the mean and standard deviation are 19.2 and 4, respectively.

Q: College students, in general, have a mean of 60 and a standard deviation of 8 on a measure of…

A: Solution-: Let, X= The college students have loneliness scores  Given: We find,

Q: When IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What is…

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: Assume that adults have IQ scores that are normally distributed with a mean of 99.2 and a standard…

A: Given info: IQ scores are normally distributed with a mean of μ=99.2 and a standard deviation…

Q: a 95% confidence interval for the mean of diastolic BP in women is 62 to 110mmHg.  What is the…

A: We have given that 95% confidence interval CI = ( 62, 110) Confidence level (c) = 95% = 0.95…

Q: Approximately what percentage of normally distributed data values will fall within 2 standard…

A: It is known that, normal curve is a symmetric and bell shaped distribution.

Q: Assume that adults have IQ scores that are normally distributed with a mean of 96.6 and a standard…

A: Standard normal distribution: The standard normal distribution is a special case of normal…

Q: The admission committee of AUCA passes 61% of those who took the exam. If the scores follow a normal…

A: We have given that.   X~N( μ , ?^2 )   μ =350 , ? =25   Z-score =( x - μ )/?

Q: A normal population has a mean= 61 and standard deviation=16. what proportion of the population is…

A: From the provided information, Mean (µ) = 61 Standard deviation (σ) = 16 X~N (61, 16)

Q: The scores of students in a 40-point Mathematics achievement test are normally distributed with  a…

A: given data normal distributionσ = 3.595% of students got score between 28 and 42.mean = ?

Q: The mean dose for a medicine is 134mg and the standard deviation is 18mg. The dosing is normally…

A: Given the definition of Empirical formula that, According to Empirical rule , the data with mean μ…

Q: Assume that adults have IQ scores that are normally distributed with a mean of 102 and a standard…

A:

Q: he scores on a standardized test are normally distributed with a mean of 105 and standard deviation…

A: Consider X be the random variable representing the he scores on a standardized test.    X is…

Q: Scores on a standardized exam are known to follow a normal distribution. A researcher estimates the…

A: A confidence interval of population mean, µ, in terms of sample mean and margin of error, can be…

Q: The distribution of heights of adult Filipino is approximately normal with a mean of 69 inches and…

A:

Q: The Ankle Brachial Index (ABI) compares the blood pressure of a patient's arm to the blood pressure…

A:

Q: Approximately what percentage of normally distributed data will fall within 2 standard deviations…

A: Based on the Concept of Empirical Rule: About 68% of the area under the curve falls within 1…

Q: Resting pulse rates for healthy adults are found to have approximately a Normal distribution with a…

A:

Q: A certain standardized tests math scores have a bell shaped distribution with a mean of 525 and a…

A: GivenMean(μ)=525standard deviation(σ)=105

Q: If you have a population standard deviation of 10 and a sample size of 4, what is your standard…

A: Given,population standard deviation(σ)=10sample size(n)=4

Q: The mean BMI score for dieters on the Jenny Craig weight loss program is 38.5, and the standard…

A: The normal distribution: A continuous random variable X is said to follow normal distribution with…

Q: ly normal and has a standard deviation of 88% of students scored above a 800. What is the mean of

A: The mean of the binomial random variable obtained by the formula μ=np, where (n) is the number of…

Q: The time needed to take an exam is normally distributed with an average of 120 minutes and a…

A: Given,mean(μ)=120standard devition(σ)=20

Q: The National Center for Health Statistics reports that the LDL cholesterol for adults has a mean of…

A: Sample size n=23 Sample mean=144.3 Population standard deviation =40

Q: If research samples 28 college students and wants to compare the sample mean of 8 to the population…

A: From the provided information, Sample size (n) = 28 Sample mean (x̄) = 8 Population mean (µ) = 12…

Q: IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Using the…

A:

Q: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

A: Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard…

Q: The relative frequency histogram represents the length of phone calls on George's cell phone during…

A: Given

Q: A student will spend 15 hours average each week in class. If the standard deviation is 2 hours, what…

A: Given that mean=15 and standard deviation = 2 Let, X= number of hours spent by a student in the…

Q: The width of an A4 piece of paper is  normally distributed with a mean of 210  mm and a standard…

A: The width of an A4 piece of paper is normally distributed with a mean of 210 mm and a standard…

Q: When a distribution is bell-shaped, approximately what percentage of data values fall within 1…

A: We know that, the empirical rule which is also known as 68-95-99.7 rule.  The Empirical Rule finds…

Q: IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15.…

A: Introduction: Denote X as the random variable indicating a randomly selected IQ score, which has a…

Q: The distribution for the time a patient of a medical center spends waiting for an appointment is…

A: Solution: Let X be the time a patient of a medical center spends waiting for an appointment. From…

Q: Assume that adults have iq scores that are normally distributed with a mean of 97.9 and a standard…

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.