A dental assistant is interested in the proportion of patients that need a root canal. Let the proportion of patients that need a root canal be p. If the dental assistant wanted to know if the proportion of patients that need a root canal is more than 20%, what are the null and alternative hypotheses?   Select the correct answer below:   H0: p=0.20; Ha: p<0.20   H0: p>0.20; Ha: p=0.20   H0: p=0.20; Ha: p>0.20   H0: μ=0.20; Ha: μ>0.20

Q: 7:21 A ll 85% A news article that you read stated that 51% of voters prefer the Democratic…

A: a. It is observed that the test is one prop Z test. b. Hypotheses: Let p be the proportion of voters…

Q: Researchers at the University of Nebraska are interested in determining the average number of…

A: Before collecting data for maple roots it is important if the random sample is taken and the…

Q: Make 1 real-life problem with a solution in any of the following topics;

A: Hypothesis testing for one sample proportion is large sample hypothesis test for binomial…

Q: Dr. Kijowski is concerned about student phone use, so she collects information on the number of text…

A: Given that Dr. Kijowski is concerned about student phone use, so she collects information on the…

Q: Miranda, a quality assurance inspector at a frozen treat factory, checks for product quality using a…

A: Given that,n = 11N = 41

Q: you have data on smoking status in males (n= 20) and females (n= 15 and want to see if males smoke…

A: We have to determine which statement is true for given situation.Sample sizes n1=20 ,n2=15

Q: Consider the following competing hypotheses and accompanying sample data. (You may find it useful to…

A: Solution: Given information: n1= 22 Sample size of sample 1n2= 18 Sample size of sample 2x1= 57…

Q: What is the alternative hypothesis in the problem? The average family family size in the Philippines…

A: Given The average family size in the philippines was reported as 4.30 Mean=μ=4.30 l.o.s.=α=0.10

Q: The recidivism rate for convicted sex offenders is 13%. A warden suspects that this percent is lower…

A: n=348,X=31,p=0.13α=0.01

Q: Use the following information to complete parts (a) through (e) below. A researcher wanted to…

A: The given information can be represented as follows. Treatment B…

Q: A researcher wishes to estimate the number of households with two cars. How large a sample is needed…

A:

Q: kindly assist.   An epidemiologist who is working in Capricorn Department of Health investigated…

A: INTRODUCTION:  lARGE SAMPLE TEST FOR POPULATION PROPORTION. The test of proportion is used to test…

Q: while ) In the 1850's, Mendel surveyed peas and found 428 to be green 152 were yellow. He then…

A:

Q: A quiz was given in a nursing class. The results of scores and number of students achieving the…

A:

Q: According to the M&M Mars company, 30% of M&M's are brown. A researcher thinks the claim is false…

A:

Q: (a) One part of the study tested whether the proportion of dogs opening the door to be with their…

A: a) Suppose p1, p2 are the true proportions of dogs opening the door in distress condition and in…

Q: Vary etnhic group? location and gender (males are le factors. Here is the data and the mosaic plot…

A: Given, Ethnic group Belted Non Belted Total Black 273 98 371 Hispanic 380 162 542 white…

Q: You want to obtain a sample to estimate the percentage of college students in the U.S. that get a…

A: It is given that margin of error (E) is 0.03 and the confidence level is 0.95.

Q: A rare birth defect occurs in approximately 0.5% of all cases in males. If we sample all the males…

A: Given information: The total number of males born in 2016 in a specific region is N = 200,000. It is…

Q: The current best option for coronavirus is the effective 5% of the time. If I wanted to test whether…

A: From the provided information, The current best option for coronavirus is the effective 5% of the…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96 and E=0.02.

Q: The recidivism rate for convicted sex offenders is 16%. A warden suspects that this percent is…

A: Given : x = 72 n = 378 p^ = xn p^ = 72378 p^ = 0.191 α = 0.1 a) For this study, we should use…

Q: For the following hypothesis, please state the IV and DV: “The gender of the interviewer has an…

A: In statistics, the independent variable (IV) is the variable which does not depend upon other…

Q: A hospital has studied its patient history and had concluded that 2% of patients that have been…

A: Given: Proportion of patients infected with staff bacteria = 2100=0.02

Q: The null hypothesis in words would be: The proportion of people in a sample that prefers Trydint gum…

A: Given information: A sample of 140(=n) people out of which 57 people prefer 'Trydint' bubble gum and…

Q: c)   If the scientists want to estimate the proportion of deer that carry Lyme disease ticks to…

A: We have given that,  Margin of error (E) = 0.02 and confidence level = 90% Then,  We will find the…

Q: You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is…

A:

Q: Answer the given problem. Use the steps in hypothesis testing when presenting the results.         A…

A: An ANOVA test for single factor is used to compare the mean of more than 2 groups. In this test the…

Q: 3. While I am dog person, my husband is a cat person. Two years ago, I was trying to convince him to…

A:

Q: A group of researchers wants to know whether men (population 1) are more likely than women…

A:

Q: For a sample of n=16 scores, how many scores are used to calculate the sample variance?

A:

Q: Q3. What is a research hypothesis and why is it important to carry-out research? Differentiate…

A: RESEARCH HYPOTHESIS: A research hypothesis is a statement of expectation or prediction that will be…

Q: In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation…

A: Here the proportion of people liking dark chocolate is 37% with a margin of error 2.5%  So, the…

Q: A physical therapist believes that men have higher blood pressure than women. He collected the blood…

A: A) In this case, we will use the independent samples t-test because of the following reasons The…

Q: A hospital has studied its patient history and had concluded that 2% of patients that have been…

A: Given: 2% of patients have been admitted with staff bacteria.

Q: Please see below. I only have one attempt at this. I really need help with this.  Does duct tape…

A: Solution-: Does duct tape work better than cryotherapy for removing warts in children and young…

Q: People who sustain a concussion or a traumatic brain injury (TBI) are likely to experience sleep…

A: Given that   Researchers recruited a sample of 31 patients who had their first TBI 18 months earlier…

Q: Does it Make Sense? For Exercise 4 decide whether the statement makes sense (or is clearly true) or…

A: It is given that the sample proportion (p) is 0.14, and sample size (n) is 1,000.

Q: What is a research hypothesis and why is it important to carry-out research? Differentiate between…

A: RESEARCH HYPOTHESIS: A research hypothesis is a statement of expectation or prediction that will be…

Q: If the proportion of Hs is .45 out of 200 flips, what is the p-value?

A: Solution-: Given : We find p-value=?

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.