Approximately 8% of all people have blue eyes. A random sample of 20 people is selected, find μ. Round to one decimal place.

Q: the random sample selected by the company will result in a value of e within 3 percentage pointe ef…

A:

Q: d. Your doctor tells you you are in the 30th percentile for blood pressure among US adults. What is…

A: We have to find score for given percentile.

Q: A recent poll of 800 people who work indoors found that 208 of them smoke. If the researchers wnat…

A: The sample proportion can be calculated as: p=x/n=208/800=0.26 At a 98% confidence level, the z…

Q: The 78th percentile i (Round to two decimal places as needed.)

A: Here use normal distribution table for finding z score

Q: Estimate the measure of ZGHI to the nearest 10°. H

A:

Q: When estimating the population proportion, how large a sample is needed to be 95% confident that the…

A: Given:  The margin of error is equal to 0.05  Confidence Level : 95%  It is asked to compute the…

Q: measures the size of an effect in a population, whereas measures whether an effect exists in a…

A: Effect size is a value which measures the strength of the relationship between two variables in a…

Q: A humane society claims that less than 73% of households in a certain country own a pet. In a random…

A: Given,n=500x=355p^=xn=355500=0.71α=0.05H0:P≥0.73Ha:P<0.73

Q: (e) forty-three percent of all trials of this type are completed within how many days?

A: Given Information: The duration of a particular type of criminal trial is known to be normally…

Q: Practice: A set of scores showing sleeping hours of five people [4,7,3,6,7] Calculate 1. ΣΧ. 2 ΣΧ 4.…

A: The summation is represented by the notation ∑.

Q: Q: If you are 90% sure about making the right decision, what is the alpha (α) value?

A: To find : If you are 90% sure about making the right decision, what is the alpha (α) value?

Q: According to Chebyshev's theorem, at least 88.9% of the data falls between approximately 47.62 and…

A:

Q: Blood pressure Diastolic blood pressure in adults is normally |distributed with µ = 80 mm Hg and o =…

A: Solution: Given information: Let X be the diastolic blood pressure in adults is normally distributed…

Q: Approximately 7% of the population has the O- blood-type. If you drew a random and independent…

A: p= 0.07   n = 2065

Q: se a study revealed 5*

A: Given, a study revealed 57% of all subjects possessed trait A, 28% possessed trait B, and…

Q: In a class of 50 students, Heather has a rank of 14. At what percentile is she? Heather has a…

A: According to the provided information, B = 14 N = 50

Q: Determine what proportion (n) of a population N of 4,000 will make your research work scientific in…

A: Given : Population Size (N) = 4000 Level of significance = 0.05 i.e Confidence level = 95% It means…

Q: In recent years, the proportion of male newborn babies is 51.46%. To test whether the proportion of…

A:

Q: raph of the e table Using VE of 45.

A: We need to sketch of the graph of  r=sin 3θ Where θ are multipliers of 45°.

Q: Professor Zuro surveyed a random sample of 420 statistics students. One of the questions was "Will…

A: GivenTotal no. of statistics students(n)=420No.of students said yes for math class(x)=252

Q: d) What is the predicted amount of fireworks used in 1998?   e) What is the actual fireworks used…

A: 1998 means x = 8 (1998-1990).   The predicted amount of fireworks in 1998 can be calculated as:

Q: You sampled 20 students in a high school to try to predict the students' GPAs in 9th grade based on…

A:

Q: According to Chebyshev's theorem, at least 88.9% of the data falls between approximately 47.62 and…

A: (5)

Q: "Brand of soft drink" is measured on a(n)

A: Brand is a tag or label that a soft drink has. A nominal scale is a type of measurement scale in…

Q: In a random survey of 1500 adults in California and 1000 adults in Oregon, you found that 228…

A: Given that

Q: Blood pressure measurements consist of two numbers, the systolic pressure and the diastolic…

A: From the given information, x y x^2 y^2 xy 134 72 17956 5184 9648 115 83 13225 6889 9545…

Q: The mean of the population is (Round to two decimal places as needed.)

A: The population is 508, 634, 545, 611 and 577.

Q: Listed below are body temperatures from five different subjects measured at 8 AM and again at 12 AM.…

A: The difference in body temperatures is defined as d = first - second

Q: A random sample was taken and the data is shown below. For the data shown, answer the questions.…

A: Mean: The arithmetic mean (also called the mean) is the most commonly used measure of central…

Q: The median mass of a collection of 8 oranges, some of which have the same mass, is 200 g. If a ninth…

A:

Q: Approximately 7% of the population has the O- blood-type.  If you drew a random and independent…

A: Given that  p=7%=0.07 ,q=1-p=1-0.07=0.93 n=2065 X~Binomial(n=2065,p=0.07)

Q: Jonathan obtained a score of 80 on a statistics exam, placing him at the 90th percentile. Suppose…

A: AS PER BARTLEBY GUIDELINES, WE ARE ALLOWED TO SOLVE ONLY ONE QUESTION WHEN MULTIPLE QUESTIONS ARE…

Q: In a class of 80 students, Heather has a rank of 16. At what percentile is she? Heather has a…

A: Heather has rank 16 in a class of 80 students. The number of students having rank after Heather is,…

Q: In a science fair project, Emily conducted an experiment in which she tested professional touch…

A: a) Expected =312*0.5=156 Answer: 156   b) Point estimate p^=151312=0.484 Answer: 0.484

Q: s comprise 65% of trees in the first orchard and 45% of trees in ards combined. What percentage of…

A: Let the number of trees in the first orchard be x and the number of trees in the second orchard be…

Q: A study is to be conducted in a hospital to determine the attitudes of nurses toward various…

A:

Q: What percentage of pregnancies last beyond 254 days? P(x > 254 days) = P(z >

A: Here, µ = 268, σ = 14.

Q: ean is (Round to the nearest tenth as needed.) measures of central tendency, including the midrange.…

A: X 43 51 11 91 77 36 64 37 42 72 54 62 36 75 51 72 37 29 39…

Q: Part B Compute 1240.64/12.5, Round the answer appropriately. Express your answer numerically using…

A:

Q: A local county has an unemployment rate of 4.2%. A random sample of 17 employable people are picked…

A:

Q: Oxygen consumption was measured in twelve individuals while they sat with their eyes closed…

A: X Y D=Y-X D-Dbar (D-Dbar)2 6.1 7.2 5.7 6.4 5.8 6.2 5.4 6.7 5.4 4.2 4.0 4.1…

Q: How many participants had a heart rate between 130 and 150 bpm?

A: Here use given histogram  From that note the frequency for required classes

Q: A study in 2014 indicated that 19% of American households have a landline telephone that they do not…

A: Binomial distribution: A discrete r.v. X taking values 0,1,2,3, …., n is said to follow a binomial…

Q: 4. In statistics, the formula E = t can be used to calculate a margin of error. Solve this formula…

A: This exercise concerns changing the subject of the equation from E (error) to n( the sample size)

Q: (a) What proportion of college graduates answered yes when asked if they had ever used online…

A: The assumed CI for the difference in proportions is,     (p^1-p^2)±(Z * SE)where Standard Error…

Q: A sample of n=16 observations is drawn from a normal population with µ=1,000 and σ = 200.  Find the…

A: From the given dataThe populations mean  The standard deviation  The sample size

Q: A recent survey found that in a particular city of all poor children born in 1980, 11,500 enrolled…

A: Scaling of data:The scaling of data, or in other words, normalization of data is a mathematical…

Q: The sample of an element as a weight of 4.5 mg and a alf-life of approximately 5

A: Given half life    t12 = 5  years initial weight f(0) = 4,5 mg

Q: What percent of our campus is female? If no preliminary study is made to estimate, how large a…

A: Given that no preliminary sample is taken to estimate the proportion of females. let the sample size…

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.