In a previous poll, 43% of adults with children under the age of 18 reported that their family ate dinner together seven nights a week. Suppose that, in a more recent poll, 1112 adults with children under the age of 18 were selected at random, and 459 of those 1112 adults reported that their family ate dinner together seven nights a week. Is there sufficient evidence that the proportion of families with children under the age of 18 who eat dinner together seven nights a week has decreased? Use the a = 0.01 significance level. ... Because npo (1- Po) 10 and the sample size is 5% of the population size, and the adults in the sample selected at random, all of the requirements for testing the hypothesis satisfied. (Round to one decimal place as needed.)

Q: Compare and Contrast alternate hypothesis and null hypothesis. How do these concepts relate to each…

A: Null and alternative hypotheses: Null hypothesis: The null hypothesis is a statement which indicates…

Q: What do you need to be able to perform a hypothesis test?

A: Hypothesis testing: Hypothesis testing is the procedure of testing a claim about the population…

Q: Dr. Ramtough is conducting an experiment comparing the effects of Outlines and Quizlets on the…

A: We have to answer question related to hypothesis.

Q: A new drug is being tested. In the treatment group, 178 out of 250 patients show a reduction is…

A:

Q: A manager decided that if more than 80% of users are classified as potential buyers, they will…

A: Given that, Percentage of users who are potential users (p) = 80% = 0.80 Explain how would work the…

Q: A researcher risks making a Type I error any time the null hypothesis is rejected? state the reason?

A: Type I error:  The type I error can be defined as the probability of rejecting the null hypothesis…

Q: About 60% of babies born with a certain ailment recover fully. A hospital is caring for five babies…

A: From the given information, it is clear thatLet X denotes the number of babies recovering fully from…

Q: About 10% of babies born with a certain ailment recover fully. A hospital is caring for seven babies…

A: About 10% of babies born with a certain ailment recover fully.A hospital is caring for seven babies…

Q: If we do not reject the null hypothesis when the alternative hypothesis is true, we have made a…

A: Fill in the required  blank

Q: DURING an experimetn in school , Geirge conducts an experiment  in which he measures an item/object…

A: During the experiment Geirge uses a string and ruler. He is likely to commit measurement error…

Q: Explain about the COMMON THEME OF HYPOTHESIS TESTS.

A: Purpose of hypothesis test: The process of making inference regarding the population based on the…

Q: Most customers like iced coffee more than hot coffee.      Alternative hypothesis      Null…

A: For the given claim we want to know the null and alternative hypothesis.

Q: What are the 2 variables being correlated (or assumed correlated) in the Hypothesis Statement?

A: We want to tell the hypothesis of correlation whether they accept or reject.

Q: What does it mean to find significant results from a hypothesis test?

A: Two types of hypothesis :  1  :  null hypothesis 2  :  alternative hypothesis

Q: A labor statisticlan claims that 6% of the labor forces will be laid off likely to pandemic impact.…

A:

Q: Make 1 real-life problem with a solution in any of the following topics; 4. Preforming hypothesis…

A: If a random pattern length of eighty college students from School 1 well-known shows 19 college…

Q: Question 4 What is the best way to assess the learning outcomes for 100 students in a Statistics…

A: An outcome can be defined as the result of an experiment.

Q: Describe Extra Sensitivity of One-Tailed Tests.

A: In testing of hypothesis , One-tailed test is determined by the alternative/composite hypothesis.…

Q: Are there examples of hypothesis tests that you have found in other research or even in everyday…

A: Hypothesis Tests, or Statistical Hypothesis Testing, is a method used to compare two sets of data,…

Q: State the research hypothesis and null hypothesis       Would the researchers use a one- or…

A: From the above data we are given that  A researcher wants to know whether people who regularly…

Q: Discuss the characteristics of hypothesis. Explain type I and type II errors in the context of…

A:

Q: Explain what it means to accept the null hypothesis?

A: We need to define null and alternative hypothesis.

Q: WonderGym is a new gym in town. They are planning some promotional programmes to draw in customers…

A: Gym conducted 2 types of exercise classes. We have to test whether there is a change in the muscle…

Q: Choose 1 answer: We cannot reject the hypothesis. We should reject the hypothesis. Measured % of…

A: Population proportion = P = 0.90 Sample proportion = p = 0.80 n = 80 Level of significance = α =…

Q: Explain the term random experiment with examples. Describe at least five such experiments, write…

A: Random Experiment:It is an process for which we are uncertain about the outcome and after the…

Q: In a survey, 33% of the respondents stated that they talk to their pets on the telephone. A…

A: The given data is as follows:Sample size, Number of owners who spoke to the pet on phone,…

Q: A teacher claims that over 15% of maths students are married, in the survey at the beginning of…

A: Answer: From the given data, Claim: A teacher claims that over 15% of maths students are married…

Q: What do we try to do in hypothesis testing? Briefly discuss.

A: Testing consists of null hypothesis (H0) and alternative hypothesis (H1)

Q: One should always relate back the outcome of the hypothesis testing to particular variables in the…

A: When performing a hypothesis test it is not enough to conclude whether to or not to reject the null…

Q: The one-tailed test only uses the null hypothesis whereas a two-tailed test uses both the null…

A: One tailed test :          The one tailed test  in which critical region is one sided it is either…

Q: Explain what it means to reject the null hypothesis or fail to reject the null hypothesis.

A:

Q: What determines whether we use the z-test or the t-test?

A: Z statistic: Z=(X¯-μ)σ/n~N(0,1) with mean=0,variance=1   t statistic t=(X¯-μ)S/n

Q: Distinguish between Alpha and Beta testing.

A: Let AT denote Alpha Testing. Let BT denote Beta Testing.

Q: Describe type I and type II errors for this hypothesis test?

A: A type 1 error is also known as a false positive and occurs when a researcher reject the null…

Q: A political analyst believes that a senator's recent decision to support a bill resulted in a drop…

A:

Q: help plz

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: Ahmed believes that 50% of first-time brides in the Pakistan are younger than their grooms. She…

A: Null Hypothesis: H0: p=0.5 Alternative Hypothesis: H1:p≠0.5 Given Information: n=100 and x=53…

Q: Please describe an example from a professional experience where you could apply a hypothesis test,…

A: Suppose I am working in R&D Department of a pharmaceutical company. We have developed a new drug…