m = 2, s=3.8, standard error = .240 what is the CI at 95%

Q: You manage a risky portfolio with E(r) =18% and o = 28%. The T-Bill rate is 8%. Suppose that your…

A: Question 1) Given that - Manage a risky portfolio with E(r) =18% and o = 28%. The T-Bill rate is…

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

A:

Q: 7. A researcher reports an F-ratio with df = 3, 24 from flos an independent-measures research study.…

A: A researcher reports an F-ratio with df = 3, 24 from an independent-measures research study. Given…

Q: What is E(x̄)? What is E(x̄) equal to?Suppose you take a random sample and find the sample mean, x̄.…

A: E(x̄) is the expected value of distribution x̄ in sampling distribution.

Q: Using the data below, what is the value of the absolute percent error for week 3? WeekTime Series…

A:

Q: For this frequency districution find the: A. Sample Mean B.Sample standard deviation

A: We have given frequency distribution and we have to find the sample mean and sample standard…

Q: A population of values has a normal dis o = 14.5. You intend to draw a randon Find Pg0, which is the…

A: A population has a normal distribution with mean μ=61.3 and σ=14.5. A sample of 29 is drawn. We need…

Q: An IQ score has a mean, u = 90, and standard deviation, o = 10. (5PTS EACH) 1. A genius is sometimes…

A: 5. Mean = 100, Stdev = 10 a. PX≥140 = PZ≥ 140-100 10 = P(Z≥ 4) = 0.000031

Q: The lifetime X of an alkaline battery is exponentially distributed with λ = 0.02 per hour. What are…

A: X~Exponential(λ=0.02) Mean=λ Variance=λ^2 Standard deviation=√Variance

Q: Annual demand for a product is normally distributed with mean 2500 units and standard deviation 140…

A: Given: Mean = 2500 units. Standard deviation = 140 units. Lead time = 4 weeks. Let us assume that…

Q: Which of the values below is closest to the standard deviation of the 100 values? (A) 0.008 (B) 0.01…

A: From the provided plot of histogram we have the range of the data as, Range = 1.40 – 0.92 = 0.48

Q: * o/X*100 is Coefficient of variation O Combined Standard Deviation O

A:

Q: X 1 2 3 4 5  Freq. 3 7 9 4 3 Find the Population Standard Deviation ___________ Find the…

A:

Q: Sulfur compounds cause "off-odors" in wine, so winemakers want to know the odor threshold, the…

A: (a) A sample of 10 students is taken in the study. There is no information of how the sample of…

Q: d) Find the probability that a photo shoot takes place between 5 and 10 hours. Find the Z value,…

A: Given Information: Mean μ=6.3 hours Standard deviation σ=4.5 hours To find the probability that a…

Q: Radon is a coloriess and odoriess radioactive gas that can accumulate in residential homes High…

A: Given Data: x¯=1.3σ=0.5n=32   Z-value corresponding to 905 Confidence level=1.645

Q: Researcher reports an F-ratio with df = 2, 27 from an independent-measures research study. How many…

A: Given, Researcher reports an F-ratio with df = 2, 27 from an independent-measures research study.

Q: Environmental Health Much discussion has taken place concerning possible health hazards from…

A: given that,possible chances (x)=7size(n)=525success rate ( p )= x/n = 0.0133point of estimate =…

Q: You make observations of 9 days of average daily streamflow. The largest discharge you observe is…

A: number of observations = 9 largest discharge value = 32.5 cfs

Q: At the Fisher farm, the weights of zucchini squash are Normally distributed. Which standardized…

A: Given- The weights are Normally Distributed. To find- The weight that represents the 5th percentile?

Q: stander deviation of population to 10, 12, 13, 14, 17 equal .A 3 .B 2 .C 6 1 need answer within 3…

A: Given data is10,12,13,14,17sample size(n)=5

Q: For a certain quantitative variable A, the 63th percentile is 36. What proportion of values of A are…

A:

Q: VO2 15 Mile 603 4.8 57.2 6.1 55.4 .1 514 7.9 $2.5 8.4 45.6 9.8 38.4 6.5 415 9.8 39.6 10.2 33.2 113…

A: Solution: The table of data values for the variables VO2 (oxygen consumption) and 1.5 mile time is…

Q: Body temperatures of healthy humans are distributed nearly normally with mean 98.2°F and standard…

A: Given Mean, μ=98.2SD, σ=0.73

Q: A market researcher wanted to evaluate the difference in credit charges for customers of Bracy’s.…

A:

Q: Q. 4 In the year 2020, City A had a population of 200,000. 300 existing cases of colon cancer were…

A: Total population in city A (N)=200,000 Number of existing cases of colon cancer = 300 Number of…

Q: ind the probability that a voice recorder will last between 2.8 and 6 years. Find the 70th…

A: Let X denote the voice recorder and it follows normal distribution with mean of μ=4.1 years and…

Q: 5o) The diameter of a circle is measured to be 5 inches, with a circumference = 16 inches. What is…

A:

Q: need part 2

A:

Q: Sulfur compounds cause "off‑odors" in wine, so winemakers want to know the odor threshold, the…

A: Given data set is,30, 30, 42, 35, 22, 33, 31, 29, 19, 23Sample size (n) = 10

Q: 1. 40th percentile 2. 60th percentile 3. 95th percentile 1. Solution:

A:

Q: X~N(12,3) Find the 87.7 th percentile X.

A: Obtain the value of the 87.7th percentile X. The value of the 87.7th percentile X is obtained below…

Q: A forest ranger has data on the heights of a large growthof young pine trees. The mean height is 3.2…

A: Denote the random variable X as height of trees. Here X follows normal distribution with µ= 3.2, σ=…

Q: Assuming that the magnitudes are normally distributed, find the percentage of earthquakes with a…

A: The magnitudes follows normally distributed with mean 2.5723 and standard deviation 0.6505 It is…

Q: The weight of Leonberger dogs is normally distributed with a mean weight of 139 lbs and a standard…

A: Here the weights of dogs are normally distributed with mean=139 and SD=22. We need to find the 85th…

Q: Normal cattle Using N(1152, 84), the Normal model forweights of Angus steers in Exercise 17, what…

A:

Q: A radioactive element has a half-life of 55 days. What percentage of the original sample is left…

A: we have to find the percentage

Q: D. 3rd Quartile E. 7th Decile F. 65th Percentile also this

A: Median is the middle value that seperates the data into two equal halves. Percentile is the measure…

Q: Mean 65.3 and Standard Deviation %D 30.1 %3D a. The range within One Standard Deviation is

A: Given information: Mean=65.3 and standard deviation=30.1 a. The range within one standard deviation…

Q: You can get a feeling for the law of large numbersgiven Section 4 by flipping coins. Flip a coin 100…

A: Using R programming as a tool for simulating 100-coin flips. For a coin flip we have two outcomes…

Q: ) A manufacturer claims that lifespans for their copy machines (in months) can be described by a…

A: u = 42 sigma = 7

Q: d) A students with a score higher than 50% of those taking the exam has a score of... e) A students…

A: 1. d) The random variable X is defined as the scores on a mathematic exam which follows normal…

Q: ixd s 67 Dr 5. Find the percentage of data points that lie above z 1.03. Draw a picture to support…

A: The percentage of data points that lie above Z= 1.03.The P-value is developed using MINITAB:Choose…

Q: (c) Determine the mean and variance of flange thickness.

A: Let X be the thickness of a flange on an aircraft component is uniformly distributed between 0.95…

Q: - Measured height of GO seedlings. Heights of seedlings @ How have heights 5cm many 60 or less?" 55…

A:

Q: Answer completely with solution. Instruction: Find the indicated area under the normal curve, then…

A: Given that  Z~N( μ = 0, ? = 1 ) μ = 0 , ? = 1 Find the  P(-1<Z<1) P(-2.43<Z<-1.10)

Q: A lab chemist would like to know if 2 methods produce the exact measurements. To do this, the…

A: There are two types of variables, they are independent and dependent variables. Independent…

Q: Find the Least Significant Difference (LSD) when standard deviation = 23.5, df =6 and n=12 a. None…

A: When we carry out Analysis of Variance (ANOVA) test and found that groups (on which ANOVA is…

Q: A normal distribution has a mean of mu = 80 with o = 20. What score separates the highest 40% of the…

A: The mean is 80 and the standard deviation is 20.

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.