In a sample of 50 leopards selected randomly from one preserve, it is found that 33 of them have respiratory problems. Find the p-value for a test of the claim that the proportion of all leopards in the preserve who suffer from respiratory problems is equal to 38%. p-value = (Show all decimal places if the answer is close to 0 or 1 otherwise round to 4 places.)

Q: A study of 100 Stat 101 students revealed that the 55th percentile of their final exam scores is 45.…

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Q: To examine the relationship between alcohol consumption and birth weight, a researcher selects a…

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Q: In a one-tail test, the p-value is found to be equal to 0.0026. If the test had been two-tailed, the…

A:

Q: At any age, about 20% of American adults participate in fitness activities at least twice a week.…

A: Given Information: About 20% of American adults participate in fitness activities at least twice a…

Q: A sample of n = 81 scores is obtained from a population with µ = 80 and σ = 27. If the sample mean…

A: Given that, Sample size, n = 81 Z score = +2.33 μ=80 and σ=27

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

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Q: A researcher claims that the incidence of a certain type of cancer is less than 5%. To test his…

A: In this context, a researcher claimed that the proportion of incidence of particular type of cancer…

Q: Suppose that historically, the proportion of people who trade in their old car to a car dealer when…

A: Null hypothesis is a claim about a population that is assumed to be true untill it is declared…

Q: The police tested 550 people, to see if anyone would match the partial fingerprint at the crime…

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Q: Assume that anxiety scores as measured by an anxiety assessment inventory arenormally distributed…

A: Given information Sample mean = 22 Population mean = 20 Sample size = 4 Standard deviation = 4 Null…

Q: The proportion p of residents in a community who recycle has traditionally been 60% . A policy…

A: Givenx=126n=215p^=xn=126215=0.5860α=0.10

Q: Before the recent downturn, one airline bragged that 90% of its flights were on time. A random…

A: From the given information we conduct Z test for proportion.

Q: A population has µ = 50. Which value of o would make X = 55 an extreme value out in the tail of the…

A: Part 1: Given μ=50              To find for what value of σ, X=55 will be an extreme value In the…

Q: A random sample of 130 recent donations at a certain blood bank reveals that 30 were type B blood.…

A: Here's, given that sample number is 130 and select 30. We will use one proportion z test.

Q: found to exhibit symptoms of depression. At a = 0.01, test the claim that more than 35% of teenagers…

A: Here From given information Claim : more than 35% of teenagers who live in the city are depressed…

Q: A sample of n = 15 scores ranges from a high of X = 11 to a low of X = 3. If these scores are placed…

A: Given: Lowest value of X = 3 Highest value of X = 11

Q: In a sample of 137 leopards selected randomly from one preserve, it is found that 7 of them have…

A: H0 : p = 0.13 H1: p ≠ 0.13

Q: A random sample of n = 49 scores is obtained from a population with σ = 14. If the sample mean is…

A: It is given that  n=49 σ = 14 Population mean =μ Sample mean,x=4.5+μ

Q: Find the P-value for a test of the claim that less than 50% of the people following a particular…

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Q: Covering the worst-case scenario, how many donors must we examine in order to be 95% confident that…

A: During a blood-donor program conducted during finals week for college students, a blood-pressure…

Q: Fifty people are selected randomly from a certain population and it is found that 12 people in the…

A: From the given information, There are 50 people and 12 people in the sample are over six feet tall.…

Q: The marks of the students in a class are normally distributed with mean 70 and S.D. of 5. If the…

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Q: The proportion p of residents in a community who recycle has traditionally been 70%. A policy maker…

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Q: The proportion p of residents in a community who recycle has traditionally been 70% . A policy maker…

A: The hypothesized proportion is 0.70.

Q: In a poll about work, 68% of respondents said that their jobs were sometimes or always stressful.…

A:

Q: Historically, the proportion of people who trade in their old car to a car dealer when purchasing a…

A: Solution: Given information: n= 115  Sample size  x= 46 success  p^=xn=46115=0.40 sample proportion…

Q: In a sample of 74 leopards selected randomly from one preserve, it is found that 7 of them have…

A: Solution: Let X be the number of leopards have respiratory problems and n be the sample number of…

Q: A decade-old study found that the proportion, p, of high school seniors who believed that "getting…

A: The sample proportion is, The null hypothesis is, The alternative hypothesis is, Significance…

Q: The proportion p of residents in a community who recycle has traditionally been 70%. A policy maker…

A: Givensample size(n)=210x=136significance level = 0.10

Q: An organization published an article stating that in any one-year period, approximately 8.2 percent…

A: Proportion z_test: If the given sample size is more than 30 or Population standard deviation is…

Q: A research center claims that 30​% of adults in a certain country would travel into space on a…

A: The null and alternative hypotheses are given below.

Q: An individual is selected from a normal population with a of μ = 80 with σ= 20, and a treatment is…

A: It is given that the mean is 80 and the standard deviation is 20.

Q: The claim is that the proportion of peas with yellow pods is equal to 0.25 or 25% the sample…

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Q: In a sample of n 15, a researcher finds a correlation of r =0.74 between IQ score and average grade.…

A: Given: n=15 r=0.74   We know that, rn-21-r2~ tn-2

Q: Among college students, the proportion p who say they're interested in their congressional…

A: Given that  Sample size n =260 Favorable cases x =185 Sample proportion p^=x/n  =185/260 =0.7115…

Q: A random experiment consists of throwing 4 equal coins, if X is the number of stamps:a. What is the…

A: Note:Hi, thank you for this question. We have considered number of stamps as the number of tails (or…

Q: An organization published an article stating that in any one-year period, approximately 11.5 percent…

A:

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

A:

Q: Of the 15 new MI cases in the preceding study, 5 died within 24 hours. Test whether the 24-hour…

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Q: A study of 200 randomly selected occupants in passenger cars and 250 randomly selected occupants in…

A: Here, p1 represents the proportion of occupants in passenger cars and p2 represents the proportion…

Q: A study done in 1997 showed that 4.2% of mothers smoked cigarettes during their pregnancy. An…

A: Given Data: p^=10/200=0.05n=200   Null and Alternate Hypothesis: H0: p=0.042 Ha: p>0.042

Q: On average, a sample of n = 36 scores will provide a better estimate of the population mean than a…

A: We have to identify trueness of statement.

Q: In a sample of 88 children selected randomly from one town, it is found that 8 of them suffer from…

A: Given information- Sample size, n = 88 It is found that 8 of them suffer from asthma. So, x = 8 So…

Q: sample of 100 high income voters and 40 out of a sample of 75 low income voters supported a decrease…

A: Given : x1= 60.0 n1= 100 x2= 40.0 n2= 75 significance level, 0.05

Q: While trying to convince her friends that more than half of all sophomores live off-campus, Bren…

A: Given: Claim : More than half of all sophomores live off-campus.

Q: The 2004 General Social Survey asked a random sample of 977 adult Americans how often they feel…

A: The random variable X follows binomial distribution. The sample size is 977. The number of successes…

Q: A researcher selected a sample of 268 former student-athletes from a list of graduates of a large…

A: Population proportion = p₀ = 0.17   Sample size = n =268 Sample proportion = p̂ =  0.14

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.