Andrew Adams
Statistics teacher | Tutor for 10 years
I hold a degree in Statistics from the Uniformed Services University of the Health Sciences. My passion lies in simplifying complex statistical concepts to make them accessible to all. With my background, I can answer your questions and provide clear explanations to help you grasp statistical principles. Whether you're studying for an exam or simply curious, I'm here to help you understand and succeed in your statistical endeavors.
Questions
What is the test statistic and the p-value for the following sample: H0: μ = 60 versus H1: μ _= 60, α = .025, ¯x = 63, σ = 8, n = 16?
Can someone help me with this PROBABILITY question? Please.
Is selecting the batting order in a baseball game a permutation or combination?
How do you extrapolate using a linear regression line?
A continuous random variable X has the p.d.f. F(x)={Ax(6-x)² if 0<x<6 ,{0 if otherwise Calculate the mean and standard deviation of X.Construct the distribution function F(x) and hence evaluate P(X>1/4).?
What is the purpose of hypothesis testing in statistics?
What are the mean and standard deviation of a binomial probability distribution with #n=11 # and #p=7/30 #?
A biology quiz consists of 14 multiple-choice questions. Nine must be answered correctly to receive a passing grade. If each question has 4 possible answers,what is the probability that a student who guesses at random will pass?
The mean of a set of data is 4.11 and its standard deviation is 3.03. What is the z-score for a value of 10.86?
The average weight of 6 students is 62 kg. If a 7th student weighs 52 kg, what is the new average weight of all 7 students?
Can someone help me solve this?
The grade point averages for 10 randomly selected junior college students are 2.0, 3.2, 1.8, 2.9, 0.9, 4.0, 3.3, 2.9, 3.6, 0.8. Assume the grade point averages are normally distributed. What is the 98% confidence interval for the true mean?
Men ages(20-29) have meanheight 69.3 with s.dev of 2.5 in. An analyst wonders if sd of majorleague players less than 2.5 in. Heights of 20 random players are:72, 74, 71, 72,76,70,77,75,72,72,77,73,75,70,73,74,75,73,74,73. Can you help me find the P value?
What will happen to the median of a data set if you add a positive number to every value?
- What is #P(z < −4.31)#?
- How do you calculate a z-score?
- The probability that Tara receives spam e-mail is 15 percent. If she receives 80 e-mails in a week, about how many of them can she expect to be spam?
- How can you prove the Poisson Distribution?
- He probability of rain on any given day is 2/3. What is the probability of at most one day of rain during the next 3 days?
- How do you find the mean, median and mode of -500, 350, 475, -300, -500, 450, 425, -400?