Explain what is Null and Alternative Hypotheses, and how are they link to each other?
Q: Define simple and composite hypotheses.
A: Here, need to define a simple and composite hypotheses.
Q: What is/are the difference/s between a one-sided hypothesis and a two-sided hypothesis?
A: Differentiate the two sided and one sided hypothesis.
Q: Define null and alternative hypothesis.
A:
Q: Explain "null hypothesis"? its properties?
A: Null hypothesis: The null hypothesis is a statement about a population parameter, such as the…
Q: What does it mean if we say that our hypothesis test has a two-sided (or, as it’s sometimes called,…
A: Hypothesis test This test is based on the sample observations. It is used for testing whether the…
Q: Let us hypothesize that cats spend more time sleeping in Winter than in Summer. Let us also presume…
A: We assumed that in summer cats sleep an average of 15 hours. We have to test that whether cats spend…
Q: Are freshmen psychology majors less likely to change their major before they graduate compared to…
A: From the given information we conduct Z test for two proportion.
Q: The proportion of adults living in Tempe, Arizona, who are college graduates is estimated to be…
A: It is given that, The proportion of adults living in Tempe, Arizona, who are college graduates is…
Q: A poll reported that 32% of 180 Canadians between the ages of 25 and 29 had started saving money for…
A: From the provided information,
Q: write the null and alternate hypothesis statement. how will you define type-1 error and type-2 error…
A: Answer: Given that, you want to propose your long time best friend. but you are scared to do so…
Q: ed on the survey, 65% of the participants are in favor of the candidates in party 1 while only 35%…
A: Given: Percentage of participants are in favor of the candidates in party 1 = 0.65 Percentage of…
Q: What are the appropriate null and alternative hypotheses
A: Let p be the proportion of people categorized as obese. Claim: The proportion of people categorized…
Q: Describe about retaining null hypothesis implies.
A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…
Q: Failing to reject a false null hypothesis is also called?
A: Errors: Reject null hypothesis when it is true is called type I error Not rejecting the null…
Q: Tyler claims that less than 80% of the undergraduate students at his college have at least one…
A: Given : Claim : Less than 80% of the undergraduate students at his college have at least one…
Q: he question is asking to check whether the program is successful, hence, shouldn't be the null…
A: Given: Before After 39 44 25 25 39 39 6 13 40 44 27 34 30 34 22 29 21 30…
Q: What is the importance of the null and alternitive hypotheses?
A: Null and alternative hypotheses
Q: According to the Centers of Disease Control, about 20% of American young people between the ages of…
A: Given that According to the centers of disease control About 20% of American young people between…
Q: A popular referendum on the ballot is favored by more than half of the voters. Write the null and…
A: Given that Population proportion p=1/2 p=0.5
Q: Describe how to write the null and alternative hypotheses based on a claim. Provide at least one…
A: In testing of hypothesis, two statements about the population, which are opposite to each other are…
Q: When a claim or assertion is involved in hypothesis testing, the nu1l hypothesis is always the same…
A: If the original claim includes equality (<=, =, >=), it is the null hypothesis and If the…
Q: Explain the concepts of the Null Hypothesis and Research Hypothesis. The textbook gives four…
A: Hypothesis: Hypothesis is an assumption about the parameter of the population which will be made on…
Q: milk store wants to know if the milk in the 1-gallon cartons actually averages 1-gallon. State null…
A: Given that The manager of a milk store wants to know if the milk in the 1-gallon cartons actually…
Q: Additionally, please Identify the null and alternative hypotheses.
A: From the given information, the claim of the problem is ‘the mean pulse rate of adult males is equal…
Q: An argument has been made in a widely-cited commentary that "If p < 0.05 is ‘significant,’ then p =…
A: Since, it is known that if p < 0.05, the result is significant. That is if p < 0.05, the null…
Q: A researcher claims that a lesser proportion of construction companies in the eastern part use…
A: The given claim is that a lesser proportion of construction companies in the eastern part use…
Q: What does it mean that the null and alternative hypotheses are mutually exclusive and exhaustive and…
A: We know that mutually exclusive cannot both occur at the same time as the occurrence of one outcome…
Q: 1-You will be conducting a study focusing on the relationship between student studying hours and…
A: Solution: To test the relationship between any two variables, a correlation test is used. The…
Q: Describe about Rejecting null hypothesis implies.
A:
Q: According to the Centers of Disease Control, about 22% of American young people between the ages of…
A: Givenabout 22% of the american young people between the ages of 12 and19 are obeseclaim is that the…
Q: Describe the null and alternative hypotheses used in hypothesis testing
A: Hypothesis testing is one of the statistical inferential procedures.
Q: What are the Null and alternative hypotheses in the example of type 1 and type 2 error?
A: Given that What are the Null and alternative hypotheses in the example of type 1 and type 2 error?…
Q: Are the following statements H0 : = 7 and H1 : ≠ 7 valid null and alternative hypotheses?
A: We have given statements, H0: =7 H1: ≠7
Q: In 2012, seventy percent of Canadian households had an internet connection. A sample of 320…
A: In 2012, seventy percent of Canadian households had an intemet connection. A sample of 320…
Q: Hypothesis testing is an important aspect without which the validity of research can’t be claimed”.…
A: Hypothesis testing : Hypothesis testing could be a form of applied mathematics reasoning that…
Q: The researcher was interested in examining whether there was a significant difference between (a)…
A: A Hypothesis is an assertion (or) statement about the population parameter θ The following are the…
Q: Which are the correct null and alternative hypotheses? O a. Ho: The average grade of the students is…
A: Given : significance level, (α) = 0.05
Q: If in general a reasearch question needs to be answered by using the null and alternative hypotheses…
A: In testing of hypothesis, the first step is to set the Null and the research hypothesis. The null…
Q: Support for the U.S. death penalty for convicted murderers was 63% in 2014 (Gallup poll results…
A:
Q: Can you guys help me on this? Thank you!
A: a.H0:p1−p2≤0HA:p1−p2>0 b. 0.75 c. 0.72 d.test statistic: z = 1.25p-value: p =…
Step by step
Solved in 2 steps
- A golf instructor claims that more than 70% of his students have improved their driving distance by at least 20 yards after viewing and applying the techniques described in his instructional video. If 138 out of 180 viewers say that their driving distance has improved by at least 20 yards, is the instructor's claim valid? Identify the null and alternative hypotheses for this scenario. Is the instructor's claim that "more than 70% of his students have improved their driving distance by at least 20 yards," valid? Your response should include your decision and conclusion in context of the scenario.According to the Pew Research Center, 14% of adults rate basketball as their favorite sport. Your boss believes the proportion may be lower among adults over age 65, and wants you to collect evidence to see if this is true. What are the null and alternative hypotheses? Group of answer choices attached in ssDefine one-sided alternative hypothesis?
- A recent Food and Drug Administration (FDA) report states that 65% of all domestically produced food products are pesticide free. Suppose an FDA spokesperson believes that less than 65% of all foreign produced food products are pesticide free. Specify the null and alternative hypotheses that would be used to test the spokesperson’s beliefA researcher selects a sample of international students and provides them with extra support to pursue their educational goals. The graduation rates for the sample is compared to the graduation rates for international students overall. In this study design, what are the null and alternative hypotheses? answer should be in the form of 2 complete sentences.Are freshmen psychology majors more likely to change their major before they graduate compared to freshmen business majors? 355 of the 619 freshmen psychology majors from a recent study changed their major before they graduated and 356 of the 679 freshmen business majors changed their major before they graduated. What can be concluded at the = 0.10 level of significance? For this study, we should use The null and alternative hypotheses would be: (please enter a decimal) (Please enter a decimal) The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The results are statistically insignificant at αα = 0.10, so there is statistically significant evidence to conclude that the population proportion of freshmen psychology majors who change their major…
- Dr. Moo conducted a research project in which she compared the impact of two types of therapy (pizza therapy and chocolate therapy) and gender on college students’ happiness. How many null hypotheses did she have, and how would you write them?Do sit down restaurant franchises and fast food franchises differ significantly in stock price? Specifically, is the average stock price for sit-down restaurants different from the average stock price for fast food restaurants? If sit down restaurants are considered group 1 and fast food restaurants are group 2, what are the hypotheses of this scenario?Let’s assume the average income for all majors in the School of Engineering is $80,000. However, the chair of the Computer Science department thinks their students earn more than that. Please choose the appropriate null and alternative hypotheses if the chair wanted to test this belief. a. H0: u <=80,000 Ha: u > 80,000 b. H0: u= 80000 Ha: u not= 80000 c. H0: u >80000 Ha: u < 80000 d. H0: u >80000 Ha: < 80000 e. None of the above.
- You may need to use the appropriate appendix table or technology to answer this question. In 2012, seventy percent of Canadian households had an internet connection. A sample of 370 households taken in 2013 showed that 76% of them had an internet connection. We are interested in determining whether or not there has been a significant increase in the percentage of the Canadian households that have internet connections. (a) State the null and alternative hypotheses to be tested. (Enter != for as needed. Let p be the proportion of all Canadian households with internet connections.) Ho: на: (b) Compute the test statistic. (Round your answer to two decimal places.) (c) The null hypothesis is to be tested at the 5% level of significance. Determine the critical value(s) for this test. (Round your answer(s) to two decimal places. If the test is one-tailed, enter NONE for the unused tail.) test statistic (d) What do you conclude? Do not reject Ho. We can conclude that there has been a…According to a New York Times/CBS News poll conducted during June 24 - 28, 2011, 55% of the American adults polled said that owning a home is a very important part of the American Dream ( The New York Times, June 30, 2011)Suppose this result was true for the population of all American adults in 2011. In a recent poll of 1820 American adults, 62 said that owning a home is a very important part of the American DreamPerform a hypothesis test to determine whether it is reasonable to conclude that the percentage of all American adults who currently hold this opinion is higher than 55%. Use a 5% significance level use both the p value and the critical value approaches. Round your answers for the observed value of zand the critical value of z to two decimal places , and the pvalue to four decimal places z observed=p-value=critical value=What are the two types of hypotheses used in a hypothesis test? How are they related? What are the two types of hypotheses used in a hypothesis test?
