Can it be concluded that the percentage today is less than 76% if a=0.01?

Q: A researcher believes that 51% of people who grew up as the only child have an IQ score over 100.…

A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

Q: A random sample of 250 physicians shows that there are 40 of them who make at least $400,000 a year.…

A: We have to find value of test statistics.

Q: A large nationwide survey showed that 65% of high school students like Coca-Cola better than Pepsi.…

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Q: In 2001, the polls found that 81% of American adults believed that there was a conspiracy in the…

A: Given that  Sample size n =1160 Favorable cases x =897 Sample proportion p^=x/n  =897/1160 =0.7733

Q: An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans…

A: The question is about hypo. testing Given : Randomly selected no. of students ( n ) = 82 No. of…

Q: An attorney claims that more than 25% of all lawyers advertise. A sample of 200 lawyers in a certain…

A: Claim:p>0.25   n=200       x=63       p∧=xn=63200=0.315   α=0.05 ∴H0:  p=0.25     H1:   p>0.25…

Q: given as + Choose th

A: The margin of error is the amount of random sampling error in the results of a survey. The larger…

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: Given, Nationally, 83% of Americans have earned a high school diploma.  We want to see if the…

Q: the average IQ of the adult population is 100. A researcher believes the average IQ of adults is…

A: Given, n = 5 x¯=∑xn=4455=89 s=∑x2-(∑x)2nn-1      =40605-445255-1=40605 - 396054=10004=250=15.81…

Q: Suppose that 75% of college students prefer pepperoni on their pizzas. You took a sample of ?=150 at…

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Q: n automobile owner found that 20 years ago, 74% of Americans said that they would prefer to purchase…

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Q: A Gallup poll report revealed that 72% of teens said they seldom or never argue with their friends.…

A: Suppose p is the true proportion of teens in Yvonne’s school who rarely or never argue with their…

Q: Suppose that we identify 155 women 50 to 54 years of age who have both a mother and a sister with a…

A: The hypotheses for the test are given below. Null hypothesis: H0: p = 0.08 Alternative hypothesis:…

Q: Running heart rate - Jose is a physician who is researching to what extent running affects heart…

A: One sample proportion test: One sample proportion test is used to compare the proportion of values…

Q: A multinational firm hired a consultant to determine if the workers in their domestic plants were…

A: Given Information : A multinational firm hired a consultant to determine if the workers in their…

Q: Suppose a senator finds that 45% of the United States voters are in favor of abolishing the…

A: z=critical value of 95% confidence interval=inverse normal of 0.95=1.96p=proportion=…

Q: Doctors were trying to see how frequently patients survived who had a heart attack, had CPR…

A: Given that: Sample size, n=50 No. of successes, x=11 Population proportion, p=0.30

Q: A survey of 1024 people found 580 of them eat chicken soup when they have a cold or flu and…

A: The given question can be solved as shown in step2.

Q: ate the proportion of households with two cars. How large a sample is needed in order to be 95%…

A: Following information is given: Confidence level = 95% Prior estimate of population proportion = 40%…

Q: A consumer agency wants to determine whether there is a major difference between the proportions of…

A: Introduction: Denote p1, p2 as the true population proportions of cars of model and model 2,…

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

A: given data   CI = 0.90, P ( - Z< P < Z ) = 0.90 therefore z = 1.645 ( =z table ) E = 6% =…

Q: A researcher would like to determine whether there is any relationship between students’ grades and…

A: From the provided information, Sample size (n) = 100 Sample mean (M) = 3.25 Population standard…

Q: The Statistics Games are played by a large number of students across the county. Last year, 32% of…

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Q: It has been claimed that at UCLA 43% of all students live on campus. Researcher Ebony Robinson…

A: Given X=112 n=250

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Let p denotes the population proportion of driver fatalities related to alcohol. The test is that…

Q: The local school is conducting another survey to determine the proportion of students at the school…

A: Confidence interval is defined as the range that contains the value of the true population…

Q: plé wõi nple would d not expec

A: A sample is a set of individuals or objects collected or selected from a statistical population with…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

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

A: From the provided information, Confidence level = 98% Sample proportion (p̂) = 0.20 Margin of error…

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.55. What is the…

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Q: Reviewing the sample of offspring of "highly irradiated" male radiologists 27 were female and 40…

A: There are 27 females and 40 males.

Q: A child dying from an accidental poisoning is a terrible incident. Is it more likely that a male…

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Q: Please answer number 13.

A: It is given that 43% had no children, 18% are had one child, 18% are have two children, 21% have…

Q: c. The test statistic (z v = (please show your answer to 3 decimal places.) d. The p-value = (Please…

A: We have to find test statistics and p value..

Q: Assume that the average home price in the U.S. is µ = $292,700 with o = $60,000. A local real estate…

A: Hypothesis: The null and alternative hypotheses are below: H0: μ=292,700H1: μ>292,700 The test…

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.4. What is the p-value…

A: Solution

Compound Probability

Compound probability can be defined as the probability of the two events which are independent. It can be defined as the multiplication of the probability of two events that are not dependent. 

Tree diagram

Probability theory is a branch of mathematics that deals with the subject of probability. Although there are many different concepts of probability, probability theory expresses the definition mathematically through a series of axioms. Usually, these axioms express probability in terms of a probability space, which assigns a measure with values ranging from 0 to 1 to a set of outcomes known as the sample space. An event is a subset of these outcomes that is described. 

Conditional Probability

By definition, the term probability is expressed as a part of mathematics where the chance of an event that may either occur or not is evaluated and expressed in numerical terms. The range of the value within which probability can be expressed is between 0 and 1. The higher the chance of an event occurring, the closer is its value to be 1. If the probability of an event is 1, it means that the event will happen under all considered circumstances. Similarly, if the probability is exactly 0, then no matter the situation, the event will never occur.