Demonstrate your understanding of each of the following by distinguishing the each pair and provide two examples in each case; a) Norminal and ordinal b) Parametric and Non-parametric tests c) Measures of central tendency and Measures of dispersion

Q: College Units Frequency 0-24 4 25-49 3 Find the standard deviation for the grouped data. 50-74 6…

A: Solution-: We have following table: College Units Freq (fi) 0-24 4 25-49 3 50-74 6 75-99…

Q: The weight of adult ground squirrels is approximately normally distributed with a population mean of…

A: Given that The weight of adult ground squirrels is approximately normally distributed with a…

Q: b- for the following data, (19, 32, 26, 71, 88, 45, 59), the Harmonic Mean (H) is 37.4406 O 37.6044…

A: To find: The harmonic mean

Q: Direction: Answer the following problems completely. 1. Show the complete steps of hypothesis…

A: The following information has been provided: The population mean is μ=600. The sample size is n=35.…

Q: a) Consider a t distribution with 21 degrees of freedom. Compute P( t ≤ 1.28). Round your answer to…

A: Solution-: (a) Given: df=21, Compute  P(t≤1.28)=? (b) Given: df=18, Find the value of c such that…

Q: * Q1) d- for the following equation, :the value of n is En P4 (n + 1) P3 = 5 O 4 O 2.5 O 1 O

A:

Q: Two events A and B are such that P(A) = 0.5, P(B) = 0.3 and P(A^ B) = 0.1. Calculate (a) P(AB); (b)…

A:

Q: Explain how  For X = 33000 miles, Z = -2.22 P(Z<-2.22) = 0.0132             Because I dont see it.…

A: The mean is 38,000 and the standard deviation is 2250.

Q: 51% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults.…

A: Answer :- Given, 51% of U.S. adults have very little confidence in newspapers.  i.e  P = 0.51…

Q: The value, in thousands of dollars, for houses on a block, are: 45; 47; 47.5; 51; 53.5; 125 1. The…

A: Given data45 , 47 , 47.5 , 51 , 53.5 , 125

Q: Suppose that f(x) = 1.5x² for -1 < x < 1. Determine the following probabilities: a) P(0 < X) = 0.5…

A: As per our guidelines we can solve first three sub part of question and rest can be reposted.…

Q: 1. Find the mean of X of the probability distribution of the discrete random variable X. 3-= 3 f(x)…

A: The question is about to find mean of the discrete prob. dist. Given : f ( x ) = 3x  14x 343-x  , x…

Q: and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested.…

A: Given Mean= 00C Standard deviation=1.000C

Q: Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean…

A:

Q: Confidence Interval for MEANS Enter Values in the Yellow Boxes Below Sample Size n Sample Mean x-bar…

A: Solution: Let X be the pounds lost. From the given information, x-bar = 80.23, population standard…

Q: What is the probability that the stock from Company A will increase while the stock from Company B…

A: here given , An investor is monitoring stocks from Company A and Company B, which each either…

Q: Use the calculator displays to the right to make a decision to reject or fail to reject the null…

A: Givenstandard deviation(σ)=5.75Mean(x)=47.75sample size(n)=50Test…

Q: Mutual funds and hedge funds are the same thing as they both pool investors’ savings together and…

A: Both  Mutual funds and Hedge funds are managed portfolios built from pooled funds with the goal of…

Q: At the cafeteria, Edan has a choice of three soups, four types of sandwich, and two desserts. In how…

A: At the cafeteria, Edan has a choice of three soups, four types of sandwich, and two desserts.  Here…

Q: The accompanying table gives results from a study of words spoken in a day by men and women. Assume…

A: Solution Given That, The accompanying table gives results from a study of words spoken in a day by…

Q: An oceanographer claims that the mean dive duration of a North Atlantic right whale is 11.3 minutes.…

A: The provided information is  x¯=12.3s=2.2n=32α=0.10a.Ho:µ=11.3Ha:≠11.3The claim is the  null…

Q: According to the World Health Organization, the average height of a one-year-old child is 29". You…

A: The test statistic is -4.4721 and the p-value is 0.00013.

Q: Use the frequency distribution to the right, which shows the number of voters (in millions)…

A: Required probability is P(age range not between 18 to 20 years old)

Q: our place of employment is trying to determine whether to allow its employees to work from home for…

A: Note: As per the multiple questions rule, we are answering first question for you. Kindly repost the…

Q: The table below gives the amount of time students in a class studied for a test and their test…

A: X values  Y values 1031.52.751.52 7875908997858180

Q: k Q1) c- The probability of twice withdraw the same ball from a box contains 25 balls, 5 balls are…

A: Total no: of balls=25   White balls=5 blue balls=7 black balls=9 no: of ways =

Q: Suppose that a random sample of 17 adult U.S. males has a mean height of 70 inches with a standard…

A: Given that  Sample size(n) = 17 U.S. males has a mean height of 70 inches with a standard deviation…

Q: Find the indicated derivative for the function. -6 h''(x) for h(x) = 9x - 9x h'(x)=

A:

Q: Question 4 A survey of 25 grocery stores revealed that the average price of a gallon of milk was…

A: Given that: Sample mean, x¯=2.98 Sample standard error, SE = 0.10 Confidence level = 98%

Q: 2 of 47 > Five strains of the Staphylococcus aureus bacteria were grown for 24 hours either at 35…

A: The question is about correlation coefficient property Given :

Q: F. For the following data set, complete the table and determine the mean, median, mode and standard…

A:

Q: What is a discrete probability distribution? What are the two conditions that determine a…

A: 1. What is a discrete probability distribution? Choose the correct answer below. A.  A discrete…

Q: Q2) The following data represents the results of an experimental test, if the relation between…

A: The given data is: .

Q: A manufacturer has developed a new fishing line, which the company claims has a mean breaking…

A: Given that: Population mean, μ=15 Population standard deviation, σ=0.5 Null and alternative…

Q: A state lottery randomly chooses 7 balls numbered from 1 through 38 without replacement. You choose…

A: A discrete random variable is a variable whose values can be obtained by counting. Though, the…

Q: When do we reject the null hypothesis given the level of significance in a two-tailed test? when the…

A:

Q: The body temperatures of adults are normally distributed with a mean of 98.6 ° F and a standard…

A:

Q: a. "Blood types": Variable? or Data? b. "Blood types": Numerical? or Categorical? c. "Blood types":…

A: a. blood types-variable b. blood types-Categorical  c. blood types-nominal d. blood…

Q: An advertising firm wishes to demonstrate to its clients the effectiveness of the advertising…

A: Introduction: It is required to find the correlation coefficient between the two variables, campaign…

Q: (a) List an example of two events that are independent. (b) List an example of two events that are…

A: Each variable can be classified as dependent and independent variable. Dependent variable are always…

Q: The proportion p of residents in a community who recycle has traditionally been 60%. A policy maker…

A:

Q: 10. Determine the correlation coefficient between X and Y. Random variables X and Y follow a joint…

A: Let X and Y be two random variables having joint pdf is  f(x,y)=2   , 0&lt;x≤y&lt;10   ,…

Q: Suppose your marketing department feels like 36% of customers prefer a certain feature for a…

A: a) The null hypothesis is: H0: p = 0.36

Q: Despite the repeated effort by the government to reform  how Wall Street pays its executives, some…

A: Given Information: It is known that 10 out of 15 members of the board of directors of a company were…

Q: College Units Frequency 0-24 4 25-49 3 Find the standard deviation for the grouped data. 50-74 6…

A: The total frequency is 30.

Q: What are the two decisions that you can make from performing a hypothesis test? What are the two…

A: 56. In the performing a hypothesis test  There are two decisions.   Decisions: If p-value≤ α Then…

Q: 20. What is the probability of z value indicated by (Z <-1.78)? d. 0.9633 a. 0.0375 b. 0.3075 c.…

A: According to our guidelines, we can answer only the first question. So, please repost the rest…

Q: We want to conduct a hypothesis test of the claim that the population mean germination time of…

A: Given datax=16μ=15.9s=1.5a) Here n=10 which is small and standard deviation is unknownso here we…

Q: In your state, 58 percent of registered voters in a community are registered as Republicans. You…

A: Null and alternative hypotheses: The hypothesis, which is pre assumed as true, tentatively settled…

Q: A fair coin is tossed, and a fair die is thrown. Write down sample spaces for (a) the toss of the…

A:

Forecasting

Forecasting is a methodology that uses historical data as inputs to make well-informed predictions about the course of future trends. Forecasting is the method of making forecasts based on historical and current data, most commonly by trend analysis. In the business world, forecasting is a basic statistical task. Forecasting is used by businesses to decide how to allocate their budgets or prepare for expected expenditures in the future. Forecasts help managers formulate and execute production plans by providing forecasts. The primary goal of forecasting is to make accurate predictions.