A veterinary study of horses looked at water sources for horses, and the investigators found that horses received water from a well, from city water, or from a stream. The investigators wanted to know if horses are equally likely to get water from each of those three sources. They collected data and observed the given values. Water Source Well

Q: -1 show that ŝ = (X¹X)¯¹ XTY. ·

A: Here we find what we need to do.

Q: Construct a 90% confidence interval estimate for the population mean given the following values:

A: confidence level = 90 % sample mean  = 20.2, σ = 11.6 and n=16

Q: Which of the following is not a function of research design a. determining whether the research…

A: Determining whether the research findings can be generalized to a large population or to different…

Q: A Seattle consumer agency believes that plumbers' rates are too high and wants to estimate the mean…

A: Answer  Given  Confidence interval = 95%  alpha = 1- 0.95 = 0.05 Margin of error =[E] = 3%…

Q: Find Interquartile Range (IQR) for the following set of data: 22,32,37,33,33,40,39,47,38

A: We have given the data set: 22 32 37 33 33 40 39 47 38 n=9

Q: K Thirty-one different video games showing violence were observed. The duration times of violence…

A: According to the given information, we have Sample size, n = 31

Q: You are part of a trivia team and have tracked your team's performance since you started playing, so…

A: Sample size(n)=18sample mean(x¯)=82Population mean(μ)=68population standard deviation(σ)=11

Q: Assume that we are conducting a Chi square test. There are 3 rows and 4 columns. Calculate degrees…

A: Answer: From the given data, We are conducting a chi-square test Number of rows (r) = 3 Number of…

Q: A survey was conducted that asked 963 people how many books they had read in the past year. Results…

A: From the provided information, Sample size (n) = 963 Mean (x̄) = 14.7 Standard deviation (s) = 17.8…

Q: An article gives the accompanying data on the effort required of a subject to arise from four…

A: Type 1 Type 2 Type 3 Type 4 1 11 14 11 10 2 10 14 12 12 3 7 14 13 9 4 7 10 10 9 5 8 11 9…

Q: using Excel, a calculator or other technology. The minimum, maximum, range should be entered as…

A: 41 82 53 53 89 87 52 56 65 58 80 68 58 79 79 69 20 45 43 73 27 27 94 12

Q: Calculate the pooled variance. Explain why we use pooled variance.  Stating that we need it for the…

A: From the above given data the following solution is provided below:

Q: 6.136 Football Air Pressure During the National Football League's 2014 AFC championship game,…

A: Sample size, n=11 Sample mean, x¯=11.1 Sample standard deviation, s=0.40 Significance level, α=0.01…

Q: The Scholastic Aptitude Test (SAT) has two parts: Reading and Writing and Mathematics. Scores on…

A:

Q: A medical researcher is studying the effects of a drug on blood pressure. Subjects in the study have…

A: The average change in blood pressure is -2.7.

Q: In 1995, the median price of a PC was $1200. Suppose that a random sample of 100 persons who bought…

A: The given sample size is 100 persons and the median price of a PC was $1200.

Q: According to a Pew Research Center study, in May 2011, 33% of all American adults had a smart phone…

A: Each hypothesis test has two types of methods to make decisions. They are: P-value approach…

Q: Which variable is most likely the lurking variable that explains the correlation?

A: Here Given  Two variables sales of sweater and sales of sandals

Q: A certain brand of candies have a mean weight of 0.8627 g and a standard deviation of 0.0521. A…

A:

Q: If SSB = 0.897 and SST = 9.766, what is SSE? Round your answer to two decimal places.

A: Answer: From the given data, SSB = 0.897 SST = 9.766

Q: A store gathers some demographic information from their customers. The following chart summarizes…

A: From the provided information, Age Number of Customers <20 71 20-30 99 30-40 51 40-50…

Q: What is the approximate probability that the sample has a mean fuel cost that exceeds​ $2.855?

A: Sample size=100  Population mean=2.825  Population standard deviation =0.15 We have to find the…

Q: 5. A vice president in charge of sales for a large corporation claims that salespeople are averaging…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: About 3% of the population has a particular genetic mutation. 400 people are randomly selected.…

A: We know that, The Binomial distribution formula: B( x; n, p ) = nCx*px(1-p)n-x Variance in binomial…

Q: Approximately 65% of the U.S. population have curly hair. You attend a state university that offers…

A: The information provided in the question are as follows : Approximately 65% of U.S population has…

Q: In a mid-size company, the distribution of the number of phone calls answered each day by each of…

A: Mean(µ) = 61Standard deviations (σ) = 5X ~ N (µ, σ )= N(61,5) Using Empirical rule we haveP( µ - 1σ…

Q: Assume that the helium porosity level (measured in percentage) of coal samples taken from any…

A: The population standard deviation  σ=0.75 The confidence level is 0.95 The width is W=0.40 The…

Q: A formal hypothesis test is to be conducted to test the claim that the wait times at the Space…

A: The claim is that the wait times at the space mountain ride in Walt Disney World have a mean equal…

Q: Question 3. The charge-to-tap time (min) for carbon steel in one type of furnace is to be determined…

A: using a conservative estimate based on the range of the values, which is   σ=max value−min…

Q: The waiting time T at a bank teller’s window between two successive customers is distributed as…

A: T~exp(1/4) Mean=4  Note: According to the Bartleby guidelines expert solve only one question and…

Q: Assume that the speed of automobiles on an expressway during rush hour is normally distributed with…

A: The question is about normal distribution Given : Popl. mean speed of automobile on an expressway…

Q: Use this table to answer the following questions. # of siblings 0-2 3-5 6 or more Total Broncos…

A: The table given is: # of siblings 0-2 3-5 6 or more Total Broncos Fan 9 8 14 31 Not a Broncos…

Q: a-1. As a casual observer, how many people would you expect to see in the camera department…

A: Given that, Arrival rate (λ) = 5 per hour Service rate (μ) = 5 minutes to each arrival μ=605=12 per…

Q: 1.12. Assuming normality, find the 95% confidence interval for the mean shoe size for American men.…

A: Sample size n =32 Sample mean=10.5 Standard deviation =1.12

Q: Example 3. A certain company's customers is made up of 43% women and 57% men. An aggressive…

A: Coustomer :  43% women  p = 0.43 57% men  1-p = 0.57 Now ,  Women coustomers increase to 46%…

Q: QUESTION FIVE (a) You are given below the figures of annual production (in thousand tonnes) of a…

A: X Y 1998 70 1999 75 2000 90 2001 91 2002 95 2003 98 2004 100 “Since you have posted…

Q: a random ticket was selected, what would be the probability that the driver was female? b) Given…

A: The table below lists a random sample of 46 speeding tickets on I-25 in Colorado.   0-10 mph…

Q: According to a study on the effects of smoking by pregnant women on rates of asthma in their…

A: The hypothesized value is 0.22. The value of x is 68 and the value of n is 345.

Q: The following distribution is with regard to weight (in g) of mangoes of a given variety. If mangoes…

A: LL UL Number of mangoes 410 419 10 420 429 20 430 439 42 440 449 54 450 459 45 460 469…

Q: Make a statistical decision about the null. Will you reject or fail to reject the null based on your…

A: For WP: Sample mean: x¯1=6.5 Sum of squares: ∑x1-x¯12=85 Sample size: n1=15 For CS: Sample mean:…

Q: The regarding the USA population are also provided and will be used to determine the "Expected"…

A: The chi-square statistic is given by χ2=∑∑(O-E)2E

Q: (a) Consider a t distribution with 7 degrees of freedom. Compute P(t≤1.85). Round your answer to at…

A: Distribution:  t Degree of freedom =df = 7

Q: USE THE CRITICAL VALUE METHOD TO CONDUCT THE FOLLOWING TEST. You want to test the claim that the…

A: In hypothesis testing, the decision is made based on some methods. They are: P-value approach…

Q: Answer quickly please. Qualitative research is distinguished from quantitative research by a. its…

A: Option a is not a distinguishing characteristic of qualitative research, as both qualitative and…

Q: Annual starting salaries for college graduates with degrees in business administration are generally…

A: Answer: From the given data, Population standard deviation (σ) = $ 3750 Margin of error (E) = $ 400…

Q: Which ONE of the following is the benefit of using simple random sampling? Select one: A. The…

A: Here, benefits of using simple random sampling.

Q: What is the expected count for the cell corresponding to a white car with manual transmission? Start…

A: Total number of cars=384 Number of white cars=96 Number of cars with manual transmission=204

Q: Find the probability that exactly 2 flights had delayed take-offs.

A: At a certain airport, 10% of flights experienced delayed take-offs because of airport operations. 15…

Q: of ortical care doctors unication through video and audio so that a centraled staff of specially th…

A: The formula of third quartile for even numbers of the ungrouped data is, where, n denotes the total…

Q: The following data lists the ages of a random selection of actresses when they won an award in the…

A: The formula of difference of population of ages of bst actress and actors is, Difference(d)  Actress…