The following are four consecutive weeks earnings of five salesman employed by a given firm Test at  level of significance 0.5 whether difference between salesman  are significant .Apply LSD test  if required A B C D E           152 181 169 212 156           175 171 130 234 123           180 203 124 240 145           165 159   220 137

Q: A researcher performed a study to determine if an association exists between gender and blood type.…

A:

Q: Q3) The following data represents the score of 40 students in one exam 26 72 41 59 60 88 35 48 11 84…

A:

Q: Male(x₂) 80 83 78 84 90 88 82 85 89 82 85 12 86 Total Mean STEP 1: Make a hypothesis Ho: Ha: No 1 2…

A: We need to test,  if there is any significant difference in the performance in Basic Calculus of the…

Q: Let x be the age in years of a licensed automobile driver. Let y be the percentage of all fatal…

A: Solution:(a) Draw a scatter diagram displaying the data.

Q: To test whether the mean time needed te mix a batch of materials the same for machnes produced by…

A: Given: Manufacturer 1 Manufacturer 2 Manufacturer 3 24 30 21 30 28 20 28 33 24 26 29 23

Q: The following data represent exam scores in a statistics class taught using traditional lecture and…

A: Measure of dispersion :  To know the extent of variability in description of data , Measure of…

Q: The following data are from an experiment designed to investigate the perception of corporate…

A: According to the provided data, three groups (management, research and advertising) are considered…

Q: The following data on price ($) and the overall score for 6 stereo headphones that were tested by…

A: Given :

Q: Marks obtained by 12 students in the college test (x) and the university test (y) are as follows: 41…

A:

Q: In some states, a driver of a vehicle may not use a handheld cell phone while driving. In one state…

A: Using given table we find the probability.

Q: 3. The data collected on 10 college students were shown below, X is the number of hours the subject…

A: For the given data Find all the required

Q: the number of days a patient was hospitalized with a diagnosis of traumatic injury were recorded as…

A: Note: Hey there! Thank you for the question. As you have posted several sub-parts of a question,…

Q: Test the hypothesis that the two variables of classification are independent by using 0.05 level of…

A: Observed Values:   A1 A2 A3 Total B1 337 291 302 930 B2 225 207 238 670 Total 562 498 540…

Q: The following scatterplot shows the relationship between the course grade and the placement test…

A: Scatterplot is the plot of the pairs of observations where the independent variable plotted on…

Q: The following table presents the intelligence quotients of nunaway boys. Intelligence Quotient 30 -…

A: From the above data The third option is correct  The data is normally distributed The second option…

Q: Ryan is growing 10 saplings in a greenhouse, labeled A thru J. He makes these observations about…

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

Q: A fast-food restaurant monitors its drive-thru Speed of Service (Time in Seconds) O 108 service…

A: From the given data we construct steam leaf plot. And the range for most frequent speed of service.

Q: I'm trying to figure out how to do this question on my homework, but don't know how to start the…

A: From the given information, It has been given that, Before After 7.5 4.3 6.4 5.1…

Q: Let x be the average number of employees in a group health insurance plan, and let y be the average…

A: The table with the necessary calculations is shown below: X Y X*Y X2 Y2   2 50 100 4 2500   8…

Q: An Electronic store is being questioned by the Head Manager. The Head boss is concerned about this…

A:

Q: Identify each of the following as either descriptive or inferential statistics. a. The average…

A: As per the company policy i can answer only first question for you,more than that leads me towards…

Q: The following sample contains values of the price and quantity sold of a particular ommodity. Use…

A:

Q: 5. Data was collected on 317 cars approaching a 4-way stop. Data was recorded on whether or not the…

A: Hypotheses: H0­ : the two variables are independent. The alternative hypothesis is: H1­ : the two…

Q: The following table shows the marks obtained by 10 students of a college in Accountancy (X) and…

A: Regression equation of Y = Accountancy and X = Statistics: A simple regression equation describes…

Q: Workers at an aluminium plant are placed into categories based on their duration of exposure, (in…

A: 1) In the given situation, the testing is based comparing the relationship between two categorical…

Q: dentify each of the following as either descriptive or inferential statistics. a. The average salary…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Q: The data below is a summary of slim possible finalists’ weight difference in kilograms. Participant…

A: The data shows the slim possible finalists’ weight difference in kilograms.

Q: Suppose that we are given the following data relating to marks obtained by students in Statistics in…

A:

Q: Data were collected on the number of people entering an electronics store each hour. The data are…

A: Given that the data were collected on the number of people entering an electronics store each hour.…

Q: A screening test is applied to 200 patients suffering from a certain disease. This test is also…

A: The Specificity defines the probability of occurrence of a negative test result, when the patient…

Q: Each person in a random sample of adults was asked how many DVDS he or she owned. Summary statistics…

A: Concept:Though the given distribution is not a normal distribution but for the sake of approximate…

Q: Jse the data in the table and a 0.05 significance level to test the claim that occupation is…

A: Option c) is correct.

Q: In a survey of employees at a fast food restaurant, it was determined that 10 cooked food, 11 washed…

A:

Q: A selected member of public office sits at a train station for over two hours recording the time at…

A: Given: The data is provided of the claimed arrival time and actual arrival time of the train. The…

Q: A biology professor claims that, on the average, 15% of her students get a grade of A, 30% get a B,…

A: We have to find chi-square test statistics. Formula : χ2 = ∑(Oi-Ei)2Ei Where , Oi is observed…

Q: The table shows the results of a cross tabulation of gender and whether a person is happy in his or…

A: To determine whether the two variables are independent or not, the test of independence needs to be…

Q: Is it possible to get the following from a set of experimental data: (a) r23=08 r13 =-05, r12=0-6…

A:

Q: Following are age and price data for 8 randomly selected ambulances between 1 and 6 years old. Here,…

A:

Q: A biology professor claims that, on the average, 15% of her students get a grade of A, 25% get a B,…

A:

Q: The following data represent exam scores in a statistics class taught using traditional lecture and…

A: Range= Maximum observation-minimum Observation

Q: The following data represent exam scores in a statistics class taught using traditional lecture and…

A: Since you have posted a question with multiple sub-parts, and specify to solve part (b) we will…

Q: Using Excel construct a scatter plot. Discuss the output of the scatter plot.  Give (or calculate)…

A: Let X be the variable defined as price of the item and Y be the variable defined as time taken for…

Q: What is the value of the F-statistic for Ho 01s 12, HA 2 012>01, where s 1= 3.3, and s 2 = 2.1. O…

A: An F statistic is a value you get when you run an ANOVA test or a regression analysis to find out if…

Q: You wish to test the following claim (H.) at a significance level of a = 0.02. H.:µ = 51.6 Ha:# >…

A:

Q: The table below shows the weights, in pounds, of seven subjects before and after following a…

A: The mean significant difference between the dependent or paired sample is calculated using the t…

Q: A biology professor claims that, on the average, 15% of her students get a grade of A, 25% get a B,…

A:

Q: Given: The table below shows the scores on a Chem 103 test consisting of 10 questions worth 10…

A: Table are used to consolidate the larger number of data set. Table shows the similarity and…

Q: If other factors are held constant, which set of data is most likely to produce a significant value…

A: n = 30 and SS = 10 for difference scores.

Q: The following table consists of one student athlete's time, x, (in minutes) to swim 2,500 yards and…

A: Given - x is athlete's time (in minutes) to swim 2,500 yards y is heart rate (beats per minute)

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.