Exhibit 10-12 To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below. A 20 30 25 33 B 22 26 20 28 C 20 17 18 25

Q: (Type whole numbers.) Class Frequency 126-162 163-199 200-236 237-273 274-310 the data set using 5…

A: 169 157 126 130 179 161 166 220 142 133 194 209 151 257 260 248 306 139 204 181 Sample size n =20

Q: Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho:…

A: Answer:- Given information,  Hypotheses are, H0 : p=0.72 versus H1 : p≠0.72 n = 500 , x = 350 and α…

Q: archaeology club has 20 members. How many different ways can the club select A. 116,280 B. 465,120…

A: The total number of members=20 The selected number of members=4 Here we have to use formula for…

Q: d) Construct a 95% confidence interval for relative risk a 95% confidence interval for odds ratio e)…

A: The relative difference is calculated by subtracting the probability of the experimental group and…

Q: The weights of ice cream cartons are normally distributed with a mean weight of 11 ounces and a…

A: a) Suppose the random variable x defines the weights of ice cream cartons.

Q: True or False: A covariance coefficient is a symmetrical measure of association.

A: In the realm of statistics, measures of association play a crucial role in quantifying the…

Q: Test the independence of the two variables in the table below: Enter the test statistic (to 4…

A: The required formula is, Where,   Oi is the observed frequency and Ei is the expected frequency.

Q: You are given the sample mean and the population standard deviation. Use this information to…

A: The random sample of size, n=48 The sample mean, x¯=$118.91 The  population standard deviation,…

Q: Consider the sample of five values and corresponding weights shown to the right. a. Calculate the…

A: From the provided information, The data values are as follow: xi wi 4.3 4 3.5 8 5.6 6 2.3…

Q: The data below shows the scores a sample of husbands and their wives received when given a happiness…

A: Given: n = 10 Formula Used: Correlation coefficient r = n∑XY-∑X∑Yn∑X2-∑X2n∑Y2-∑Y2 Test-statistic t =…

Q: A regression was run to determine if there is a relationship between hours of TV watched per day (x)…

A: The given results are: y=ax+ba=-1.271b=39.101

Q: Please do not give solution in image format thanku   QUESTION 3       Mission Hotel has an…

A: To calculate the probability P(j≥s), where j represents the number of customers arriving at the…

Q: In analyzing hits by certain bombs in a war, an area was partitioned into 566 regions, each with an…

A: Given Total bombs=505 Total regions=566

Q: 4.15 Figure 4.8 is a scatterplot of tree frog mating-call frequency (in notes per second) against…

A:

Q: Find an approximation for the sample mean. X= (Type an integer or decimal rounded to the nearest…

A: Given is a data on number of hours people spend doing chores per week.

Q: Suppose that the true mean speed of cars in the school zone is actually 15 mph and the speeds we…

A: as the speed of cars in being measured in terms of the average, the parameter of interest is given…

Q: If you have designed a research study with 1 categorical IV (which is split into three separate…

A: To state whether the given statement is true or false.

Q: Compute the correlation coefficient r. Round your answer to three decimals.

A: Independent variable X- year  Dependent variable Y - percent

Q: Based picture, explain respondent's profile. b. Based picture, explain descriptive analysis for…

A: In the given situation, There are four variables. Product Quality Product Price Product Promotion…

Q: 10 297002 s sall.m 3. Find the mean, variance and standard variation (Do not use calculator 1, 2, 3,…

A: 1, 2, 3, 4, 6, 8, 12 Sample size n =7

Q: 4. Consider a random variable whose probability distribution function is defined as follows: 0.25…

A: PX=x=0.25   if x=-20.10   if x=30.65   if x=4.20        otherwise

Q: A 99% confidence interval for the population proportion is (.). (Round to three decimal places as…

A: sample size = n = 2309 X = 739 Confidence level = 99%

Q: The table shows the lifetimes in hours of samples from three different types of plant species…

A: Sample 1 Sample 2 Sample 3 457 454 460 461 456 458 459 458 456   455 458   452

Q: A time study analyst observed a repetitive work cycle performed by a worker. During the observation,…

A: PFD allowance factor =0.15  Nominal time =1.38 minutes We have to find the standard time

Q: Given that a data set has a mean of μ=125.7 and a standard deviation of σ=12.1, find the percent of…

A: Mean(μ)=125.7 standard deviation(σ)=12.1

Q: Please do not give solution in image format thanku This exercise is designed to be solved using…

A: Suppose advertises an APY of 3.5%. Assuming that the APY was a result of monthly compounding, solve…

Q: The 99% confidence interval for the mean difference (A – B) in the time it takes to experience…

A: The 99% confidence interval for the mean difference (A – B) in the time it takes to experience…

Q: The May 10, 2007 issue of The New England Journal of Medicine describes two large randomized,…

A: A study is given.

Q: A sample of 150 married women determined that 127 are happy in their marriage. A sample of 150…

A: The data is given as- for women,  n1=150x1=127 For men, n2=150p2^=x2n2=0.76

Q: A. A woman wrote to Dear Abby and claim that she gave birth 318 da husband, who was in the navy.…

A: Mean=M=268, Standard deviation=S=15 , Length=X=318

Q: Discuss whether you believe time series to be an effective forecasting tool. Identify two of the…

A: Time series forecasting is a statistical technique used to predict future values based on historical…

Q: . The degrees of freedom for the t distribution are Select one: a. 20 b. 22 c. 21 d. 19

A: Given that,   Sample 1 Sample 2 Sample mean 45 42 Sample variance 85 90 Sample size 10 12…

Q: Listed below are numbers of Intermet users per 100 people and numbers of scientific award winners…

A: α=0.01 Internet users Award Winners 80.7 5.3 79.7 9.1 57.1 3.2 67.3 1.6 77.2 10.8…

Q: Puzzle 2 Which four of these numbers have a mean of 429? 148 217 412 527 629

A: Data values: 148, 217, 412, 527, 629 The objective is identify four numbers whose mean is 429.

Q: From the states data set, get the descriptive statistics for the violent crime rate. For this…

A: given data

Q: The data below shows the scores a sample of husbands and their wives received when given a happiness…

A: The formula of the test statistic is, where, r denotes the correlation value  n denotes the sample…

Q: Difference in Two Proportions Problem. In a September 2019 survey of adults in the U.S.,…

A: The question is about hypo. testing Given : Total no. of adults of age grp. " 18-44 " in a survey (…

Q: A study was done to look at the relationship between number of vacation days employees take each…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for…

Q: Suppose that I conduct a study to examine whether drinking kool-aid improves memory performance. I…

A:

Q: According to a survey of American households, the probability that the residents own 2 cars if…

A: P(Two car)=0.70 P(2 car | Income over $50000)=0.80 P(Income over $50000)=0.60

Q: What are the hypotheses?

A: The objective is to set up the hypotheses in order to validate the claim that if the average amount…

Q: 16 26 36 46 56 66 15 25 35 45 55 56 14 24 34 44 54 64 13 23 33 43 53 63 12 22 32 42 52 62 11 21 31…

A: Here given that 2 dice are rolled . So total possible outcomes = 6* 6 = 36

Q: Which of these best describes the conclusion we could make using a 5% level of significance? Select…

A: The decision in the hypothesis testing can be made using two important methods. They are the p-value…

Q: ← In a sample of 13 randomly selected high school seniors, the mean score on a standardized test was…

A: Given that, Sample size (n) = 13 Sample mean (x̅) = 1189 Sample standard deviation(s) = 160.0…

Q: Based on the data shown below, calculate the correlation coefficient (to three decimal places). This…

A: The value of correlation is obtained below as follows: From the information, given that Thus,

Q: Please no written by hand 1. For each of the following variables determine whether the variable is…

A: There are two types of variables, one is numerical which takes the quantitative observations and…

Q: Construct a frequency distribution for the data using five classes. Class Frequency Which relative…

A: The data is given on the taste testers rated from 1 to 10. Sample size (n) = 36

Q: Would you expect distributions of these variables to be uniform, unimodal, or bimodal? Symmetric or…

A: (g) Amount of cash taken in by retail cashiers during a two-hour shift:The distribution of the…

Q: Find the minimum sample size n needed to estimate u for the given values of c, o, and E. c=0.98,…

A: Answer: From the given data, Standard deviation (σ) = 7.8 Margin of error (E) = 1 Confidence…

Q: Find the margin of error for the given values of c, s, and n. c= 0.99, s = 2.2, n = 10 Click the…

A: From the provided information, c = 0.99, s = 2.2, n = 10