You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats. You sample 110 men, and 45% own cats. You sample 130 women, and 85% own cats.

Q: 3) When you are trying to discover whether there is a relationship between two categorical…

A: To find the relationship between two categorical variables is difficult when we analyze the counts…

Q: Samir's Tea Shop has caffeinated tea and decaffeinated tea. The tea shop served 36 caffeinated teas…

A: Given : The tea shop served 36 caffeinated teas and 54 decaffeinated teas.

Q: Researchers asked 200 families whether or not they were homeowners and how many cars they had. Their…

A: We can answer the question from the table of data as below.

Q: Two factory plants are making TV panels. Yesterday, Plant A produced 4000 panels. Ten percent…

A: Given that Plant A produced 4000 panels and defective is 10% Defectives from plant B is 3%,  overall…

Q: A market study produces the following results: * 80% of respondents drink coffee or tea or both *…

A: The given information is as follows: 80% of respondents drink coffee or tea or both. 60% of…

Q: A math teacher researches the relationship between 7th and 8th grade involvement in speech and…

A: The total number of students in the 8th grade is, 19+21=40

Q: Nick makes the first quartile salary for an actuary and Dylan makes the first quartile salary for a…

A: From the given box plot:   First quartile for CPA salary= $35,000   First quartile for Actuary…

Q: (b) What is the proportion of wolves that are female but do not hunt in medium-sized packs o are not…

A: Hi, the question have the multiple sub-parts and as per the guidelines I am obliged to answer first…

Q: A May 2001 Gallup Poll found that many Americans believe in ghosts and other supernatural phenomena.…

A: Given information: Number of randomly selected adults n=1591 The given number of people who…

Q: 1. Suppose you have a 88 on your daily assignments, 94 on your major tests, and a 80 on your final.…

A:

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A: Solution: From the given information, the point estimate is M=2.0, the standard error is 5.1 hours…

Q: i) Test, at the 3% level of significance, whether the proportion of adults who experience an adverse…

A: For sample 1, we have that the sample size is N1= 733 the number of favourable cases is X1= 103, so…

Q: In a survey, editors of a magazine asked 250 people whether or not they smoke and whether or not…

A: The answer is explained below,

Q: Two doctors asked 6 of their patients, who were smokers, how many years they had smoked. In…

A: Correlation coefficient: Correlation coefficient measures the strength and direction of linear…

Q: Suppose that in a group of 800 women, the percentage who work is the same as in the sample here, how…

A: men women total work 15 23 80 not work 23 28 51 total 38 93 131

Q: You design an experiment that manipulates the following factors (and levels): method of presenting…

A: Methods of presenting materials = Visual, auditory (2) Difficulty of Material = Easy , Difficult (2)…

Q: A sample has SS= 20 and s2 =4. How many scores are in the sample?

A:

Q: The table summarizes the blood group and Rh type for 100 people. a. How many of the subjects were…

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

Q: Travis took the ACT (μ=19.50,σ=7) and recieved a percentile of 67. What was his z score? What was…

A: you had not provided distribution of sat score so we can not find answer of c.

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A:

Q: An industrial/organizational psychologist wants to improve worker productivity for a client firm,…

A:

Q: What represents a trial of taking six shots

A: A  trial is a single performance of a well-defined experiment. Hence, a trial has a well-defined set…

Q: Let X1 , X2 , X3  be  a collection of independent discrete random variables that all take the value…

A: Sampling distribution of proportion: From the central Limit theorem, the sampling distribution of…

Q: Students in a small statistics class were asked which was their dominant hand and if they were in a…

A: Given,   Right Left Total STEM, Yes 6 1 7 STEM, No 7…

Q: Can you think of an area where it might not be practical, for a variety of reasons, to sample 100%…

A: Yes, there are several areas where we cannot sample 100% of the population being covered to test.

Q: A politician is Interested in the proportion of voters in his district that think he is doing a good…

A: Given dataA politician is intrested in the proportion of voters in his district thet thinkhe us…

Q: If you are testing the claim that the proportion of smokers in population 1 is significantly lower…

A: We have given the proportion of smokers in population 1 and population 2. In first option, the claim…

Q: If Gena's score is 85, the class average is 82, and the SD is 4, what is Gena's Z-score?

A: If Gena's score is 85, the class average is 82, and the SD is 4, what is Gena's Z-score?

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: Given infromation:A sample of 125 light bulbs contained 3 defective…

Q: Use the figure to the right, which shows the percentages of adults from several countries who favor…

A: For the first first ,  Claim is the population of adults in country C who favor building new nuclear…

Q: What percentage of the blocks are red?

A:

Q: a skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p,…

A: It is given that the skeptical paranormal researcher claims that the proportion of Americans that…

Q: ) If we randomly sample 1,000 people from a large population, and ask them a yes-no question, what…

A: The sampling distribution of p-hat (sample proportion) is approximately normal with mean p and…

Q: Researchers asked 250 families whether or not they were homeowners and how many cars they had. Their…

A: Number of families having two or more cars       = 95 + 85      = 180 So percentage of families…

Q: When we say a study revealed a “difference in differences”, it means the independent variables…

A: Introduction: Main effect: Main effect is a simple effect of an independent variable on the response…

Q: Two factory plants are making tv panels. Yesterday, plant A produced 8000 panels. Seven percent of…

A: It is given that plant A produced 8000 panels yesterday.The total production of panels will be 8000…

Q: A seven-year medical research study reported that women whose mothers took the drugDES during…

A:

Q: Why does the use of multiple t tests increases?

A: The multiple t-tests are defined for a one-sample multivariate test and as well as for two samples.…

Q: What proportion of the population score above an 18 on the ACT? What proportion of students score…

A: Given: Let X denote the SAT score thus, X~ N(500, 1002) Let Y denote the ACT score thus, Y~ N(20,…

Q: What is the value of SS for this sample?

A: Given: n = 4  Σ X = 4 Σ X 2 = 32 The formula to calculate the SS is as follows:

Q: mr. One researcher wants to estimate the proportion of MU students who are vegetarian, 6 answered…

A: Sample size is 30. There are 6 students are vegetarians. The hypotheses are given below: Null…

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

A:

Q: A researcher wants to test whether UBC students are more intelligent than the general population. He…

A: Given: population mean (μ)=100population standard deviation (σ)=15sample size (n)=36Sample mean…

Q: Two factory plants are making TV panels. Yesterday, Plant A produced 6000 panels. Ten percent of the…

A: Two factory plants are making TV panels. Yesterday, Plant A produced 6000 panels. Ten percent of the…

Q: What percentage of people eat fruits and vegetables and abstain from smoking, but do not partake in…

A:

Q: A nursing school professor is interested in determining how her college students compare to the…

A: Let X denote the exam score, then assuming that X is normally distributed with mean, µ = 100 and a…

Q: You want to test whether the true proportion teenagers who can swim is below 1/4. In a random sample…

A:

Q: What do you think would help students pay more attention in class?

A: Here we want to know bias in survey question or not.

Q: C1. A computer spam filter is 98% effective at sending spam emails to my junk folder, but will also…

A: Solution

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.