A hospital administrator claims that the proportion of knee surgeries that are successful is 87%. To test this claim, a random sample of 450 patients who underwent knee surgery is taken and it is determined that 371 of these patients had a successful knee surgery operation.  The following is the setup for this hypothesis test:   {H0:p=0.87Ha:p≠0.87   Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places.

Q: Aurora is conducting a one-sample z test of the null hypothesis H0:p=0.14 against the alternative…

A: GivenH0:p=0.14Ha:p<0.14α=0.01sample size(n)=300p^=0.11

Q: The recommended daily Calcium intake for women between the ages of 21 and 50 is 1000 mg per day. The…

A: Statistical tests are used to calculate the test statistic and p-value. This calculated test…

Q: states. What is the P-value for this test? Round your answer to 4 decimal places

A: Given :   n1= 11545   n2= 4691 significance level, 0.05 sample proportion…

Q: A well-known brokerage firm executive claimed that at least 36 % of investors are currently…

A: Test Statistic Z=?

Q: How many tissues should a tissue pack contain? Researchers have determined that a person wears an…

A: Researchers have determined that a person wears an average of 54 tissues during a cold. Sample size…

Q: A random sample of 480 observations produced a sample proportion equal to 0.33. Find the critical…

A:

Q: within six years. Is this percent smaller than for students who play intramural sports? 155 of the…

A:

Q: t is believed that the percent of convicted felons who have a history of juvenile delinquency is…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: Н : u is ? ? What are the null and alternative hypotheses that the researcher should use for the…

A: Population mean μ=136 mm Hg Population SD σ=16 mm Hg n=150

Q: A well-known brokerage firm executive claimed that at least 33 % of investors are currently…

A: Population proportion is 0.33 Sample proportion is 35/102 =0.3431 Sample size is 102.

Q: A large fishing farm with thousands of fish has been treating its fish to stop a spreading fungal…

A: Given:

Q: Only about 12% of all people can wiggle their ears. Is this percent lower for millionaires? Of the…

A:

Q: The proportion of mango trees on an island that produce only dwarf fruit is p1. The proportion of…

A: The proportion of mango trees on an island that produce only dwarf fruit is p1.  The proportion of…

Q: Biologists were studying the proportions of cats that had spotted markings on their fur in two…

A: Correct answer is  (A)

Q: d in testing if this sample provides evidence that the proportion of Americans who are dissatisfied…

A: Consider the null hypothesis H0 and alternate hypothesis Ha given as: H0:μ=0.5Ha:μ≠0.5 Given,…

Q: Identify the type I error and the type error that corresponds to the given hypothesis. The…

A: Type 1 error (α) Type 1 error or "false positive" is a kind of error that occurs during hypothesis…

Q: ting drugs complain of flulike symptoms. Is there sufficient evidence to conclude that more fect at…

A: Given: p0=2.3%=0.023 The null hypothesis states that 2.3% of patients taking competing drugs…

Q: In a survey of 75 randomly selected people in Country A, 12 would like to travel abroad. In a survey…

A: Given, In a survey of 75 randomly selected people in Country A, 12 would like to travel abroad. In a…

Q: The National Highway Traffic Safety Administration reported the percentage of traffic accidents…

A: Given Information: Sample size n=420 Sunday Monday Tuesday Wednesday Thursday Friday Saturday…

Q: The researcher wanted to be sure that her manipulation for job insecurity actually influenced her…

A: The test is to check whether employees in the 50% layoff condition perceived their chances of being…

Q: Molly works for a meat producer, and she needs to determine whether containers of ground beef have…

A: Definition of p-value: It is the probability of obtaining the results as extreme as the observed…

Q: According to a University Center for Logistics Management, 13% of all merchandise sold in the United…

A: n = 90 x = 10 p = 13% = 0.13 If you have the following null and alternative hypotheses for a test…

Q: The recidivism rate for convicted sex offenders is 9%. A warden suspects that this percent is higher…

A: Given  Z=test statistic=2.697,  Hypothesis  Ho: p=0.9 vs H1: p>0.9 (right tailed) Level of…

Q: Reynaldo is conducting a one-sample z‑test of the null hypothesis H0:p=0.64 against the alternative…

A: The z test is used to determine the mean significance between the sample and the population. It is…

Q: survey by Men's Health magazine stated that 14% of men said they used exercise to reduce stress. A…

A:

Q: Group A n = 120 Group B n = 150 X2 = 61.8 S2 = 2.62 X,= 62.7 S1= 2.5 Do these samples constitute…

A:

Q: The table below shows results from a recent General Social Survey on two variables, respondent sex…

A: Null hypothesis: Null hypothesis is the statement about parameter of population. Alternative…

Q: Calculate the ?-value of the test of the following hypothesis given that the sample proportion ? =…

A: Given,sample size(n)=800sample proportion(p^)=0.63H0:P=0.60H1:P>0.60α=0.05

Q: The vice-president of administration wonders whether employees are taking adequate amounts of…

A:

Q: 18% of all college students volunteer their time. Is the percentage of college students who are…

A: The sample size is 313 in which 47 of them volunteered their time.

Q: When having a baby, assume that the probability of having a boy is 50% and the probability of having…

A: Amswer: See the answer below:

Q: A research center claims that at least 27% of adults in a certain country think that their taxes…

A:

Q: na previous year, 58% of females aged 15 and older lived alone. A sociologist tests whether this…

A: Solution: Given information: n= 350 Sample size of females  x= 210 females are living alone…

Q: In a study of the accuracy of fast food drive-through orders, one restaurant had 36 orders that were…

A:

Q: Identify the type I error and the type II error that corresponds to the given hypothesis.   The…

A: Given information- The proportion of people who write with their left hand = 0.33 We know that- Type…

Q: The recidivism rate for convicted sex offenders is 11%. A warden suspects that this percent is…

A: given p=11%, x=50,n=332, level of significance ɑ=0.01 Notes: According to bartleby guidelines expert…

Q: Molly works for a meat producer, and she needs to determine whether containers of ground beef have…

A: Definition of p-value It is the probability of obtaining the results as extreme as the observed…

Q: Suppose are running a study/poll about the proportion of women over 40 who regularly have…

A: here is given that x = 98 which is selected and n = 118 which is number of people. we will use one…

Q: Reynaldo is conducting a one-sample ?z‑test of the null hypothesis ?0:?=0.60H0:p=0.60 against the…

A:

Q: A college administrator claims that the proportion of students that are nursing majors is greater…

A: Given a hypothesis test to check the proportion of students that are nursing majors is greater than…

Q: Only about 15% of all people can wiggle their ears. Is this percent higher for millionaires? Of the…

A: Given data: p = 15 % = 0.15 n = 352 x = 60 Significance level = 0.05

Q: For this problem, your answer should be rounded to two decimal places. In a particular…

A: Given : Claim : 25 percent of homes are not properly insulated.

Q: A newspaper believes that the approval rating of the current mayor is 60%. A pollster believes that…

A: From the provided information, Sample size (n) = 900 From which 504 responded that they approved of…

Q: Last year, 46% of business owners gave a holiday gift to their employees. A survey of business…

A: Given claim:  the proportion of business owners providing holiday gifts has decreased from last year…

Q: exercise to reduce stress. At a=0.05 test the claim wherein, from a random sample of 100 men who…

A:

Q: In the experiment, a group of college students was told that they were participating in a manual…

A: Let X denotes the ratings of pain after counting money.   & Y denotes the ratings of pain after…

Q: A sample of 100 yielded a test statistic of 2.1. For a level of significance of 0.05, the null…

A: From the provided information, Sample size (n) = 100 Test statistic (z) = 2.1 Level of significance…

Q: Using the proper symbols, write the null and alternative hypotheses for each scenario below. a) A…

A: a. It is given that, p=44%=0.44. It is tested whether the new drug is more effective than aspirin.…

Q: A researcher, working for a large pharmaceutical company, is interested in testing the claim that…

A:

Q: A well-known brokerage firm executive claimed that at least 36 % of investors are currently…

A:

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.