writing an appropriate null and alternative hypothesis
Q: Researchers were interested in examining the impact poverty may have on self-perceptions of health.…
A: Researchers were interested in examining the impact poverty may have on self-perceptions of health.…
Q: According to national data, 17% of U.S. college students are a member of a sorority or a fraternity.…
A: Q.1 - Solution : Given that :-According to national data, 17% of U.S. college students are a member…
Q: Suppose a recent survey found that 74% of dog owners say their pet appears cheerful, while only 59%…
A: Given, p^1=0.74p^2=0.59
Q: population mean equals 48. (a) State the null hypothesis. H0: ? > 48H0: ? < 48 H0: ? = 48H0: ? ≠…
A: Given that ; Suppose you want to test the claim that a population mean equals 48. mu represents…
Q: shorter than 60 hours
A: For the given data : sample size, n = 10 sample mean, x̄ = 59.5 sample standard…
Q: news article that you read stated that 55% of voters prefer the Democratic candidate. You think that…
A: We have given that Sample size n =207 Favorable cases x =116 Sample proportion p^=x/n =116/207…
Q: James is a school psychologist who wants to implement stress coping skills to help his students. His…
A: Here the direction of the test is to the left.
Q: A newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing firm believes…
A: Given that, a newsletter publisher believes that 38% of their readers own a Rolls Royce. A testing…
Q: A recent survey asked 1200 randomly selected U.S. adults if they believe that the U.S. federal…
A: Let the proportion of women (p1) and men (p2) who believe that the U.S. federal government is not…
Q: According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher…
A:
Q: A television executive claims that the percent of households that watch the Macy's parade on…
A:
Q: A political scientist claims that 38% of first-year college students characterize themselves as…
A: Hypothesis Ho: p=0.38 vs H1: p≠0.38 X=225, n=500 p^=x/n
Q: Suppose that a recent report from the Current Population Survey (CPS) of the United States Census…
A: The question is about hypo. testing Given : Null and alt. hypo : H0 : p = 0.46 H1 : p > 0.46…
Q: Suppose you are interested in testing whether the mean earnings of men in the General Social Survey…
A: Given information average male in the population of U.S earned $33,405 in 2005 average male in the…
Q: A newsletter publisher believes that over 33% of their readers own a laptop. For marketing purposes,…
A: Given that Claim: Over 33% of their readers own a laptop. Decision : Reject the null hypothesis.
Q: Researchers in Britain asked some people about their daily coffee intake. Of the 22 people from that…
A: Of the 22 people from that group who had the highest coffee intake, nine of them reported hearing…
Q: Your medical research team is investigating the mean cost of a 30-day supply of a certain heart…
A: Solution
Q: Answer the following True or False: If the p-value is 0.13 and the level of significance , a , is…
A:
Q: Write the null and alternative hypotheses you would use to test the following situation. A weight…
A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…
Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. At one school, the…
A: solution:- from given information hypothesis test: the average amount of time spent watching…
Q: Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. The principal introduces a…
A: At one school, the average amount of time that tenth-graders spend watching television each week is…
Q: The mean score for all NBA games during a particular season was less than 102 points per game. if a…
A: Followings are the Explanation of the question Hypothesis Claim :- The mean score for all NBA games…
Q: Suppose you want to test the claim that a population mean equals 46. (a) State the null hypothesis.…
A: To test the claim that a population mean equals 46. a) Null Hypothesis: H0: μ = 46
Q: news article that you read stated that 56% of voters prefer the Democratic candidate. You think that…
A: given data, claim:p=0.56x=142n=236p^=xn=142236=0.6017α=0.10
Q: A dentist hypothesizes that the average time a child spends brushing their teeth is less than 60% of…
A: In the given situation, the claim of the problem is "the average time a child spends brushing their…
Q: A study showed that 62% of supermarket shoppers believe supermarket brands to be as good as national…
A: claim is that the percentage of supermarket shoppers who believe that the supermarket ketchup was as…
Q: health provider saw that 48% of their members received their flu shot in recent years. The health…
A: Hypothesis testing plays a major role in research and development. To diagnose the underlying cause…
Q: how should a decision that fails to reject the null hypothesis be interpreted?
A: The dean of a major university claims that the mean number of hours students study at her…
Q: USA Today article claims that the proportion of people who believe global warming is a serious issue…
A: Given that Sample size n =20 Favorable cases x =12 Sample proportion p^=x/n =12/20 =0.60
Q: t is more difficult to reject a null hypothesis if we use a 10% level of significance compared with…
A: Given that Rejection of null hypothesis Level of significance (α)= 0.10 Level of significance (α) =…
Q: • Employees from Company A and Company B both receive annual bonuses. What information would you…
A: Null and Alternate Hypothesis: H0: μA- μB=100HA: μA- μB>100 We will need: Sample size A =nA…
Q: A newsletter publisher believes that less than 68% of their readers own a Rolls Royce. For marketing…
A: The advertiser is decided to reject the null hypothesis that means accept the alternative…
Q: According to a recent study in New York, 15% of shoppers are unfairly being charged sales tax in…
A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…
Q: Which statistical test should be used?
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
I need help writing an appropriate null and alternative hypothesis that could be used to test the claim that p, the population proportion that feels that reality based television shows are a " disturbing" is less that 40%
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- 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. You take a survey of adults over age 65, and only 12 out of 120 of them rate basketball as their favorite sport. You would like to set �=0.05. Your boss tells you that your firm will base some expensive decisions on the results of your hypothesis test, so a higher standard of evidence for rejecting the null hypothesis is needed. What should you do? Group of answer choices Keep the significance level the same but collect more data Increase the significance level to 10% Reduce the significance level to 1% Throw out observations that look suspicious thanksOBFW Publishers A state's Division of Motor Vehicles (DMV) claims that 60% of all teens pass their driving test on the first attempt. An investigative reporter examines an SRS of the DMV records for 125 teens; 86 of them passed the test on their first try. A hypothesis test of Ho: P = 0.60 Ha:p # 0.60 where p = the true proportion of teens who pass their driving test on the first attempt using a = 0.05 gives a P-value of 0.0444. A 95% confidence interval for the true proportion of teens who pass the driving test on the first attempt is 0.607 to 0.769. Which is the following statements is not true with regards to the 95% confidence interval provided and the result of the hypothesis test? OA two-sided test only allows us to reject (or fail to reject) a hypothesized value for a particular population parameter. The value 0.60 is not a plausible value because it falls outside the 95% confidence interval. The 95% confidence interval provided gives an approximate set of po's that would not be…A group of transfer bound students wondered if they will spend the same mean amount on texts and supplies each year at their four-year university as they have at their community college. They conducted a random survey of 54 students at their community college and 66 students at their local four-year university. The sample means were $947 and $1,011, respectively. The population standard deviations are known to be $254 and $87, respectively. You are to conduct a hypothesis test to determine if the means are statistically the same using 5% as alpha What is the computed test statistic?
- A news article that you read stated that. 51% of voters prefer the Democratic candidate. You think that the actual percent is different. 124 of the 213 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho:? Select an answer (please enter a decimal) ? Select an answer (Please enter a decimal) ces C. The test statistic ? ▼ (please show your answer to 3 decimal places.) d. The p-value - (Please show your answer to 4 decimal places.) e. The p-value is ? a f. Based on this, we should Select an answer the null hypothesis. g. Thus, the final conclusion is that ... The data suggest the population proportion is not significantly different 51% ata = 0.05, so there is sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is equal to 51%. The data suggest the population…If you have questioned that your significant hypothesis test is significant “enough” to have true meaning, what are some other things you can look at to determine practical significance?A news article that you read stated that 58% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 150 of the 300 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.05 level of significance? For this study, we should use The null and alternative hypotheses would be: Ho: (please enter a decimal) Ha: (Please enter a decimal) The test statistic = (please show your answer to 4 decimal places.) The p-value = (please show your answer to 4 decimal places)
- Classify the hypothesis test as two-tailed, left-tailed, or right-tailed. At one school, the average amount of time that tenth-graders spend watching television each week is 20.1 hours. The principal introduces a campaign to encourage the students to watch less television. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching television per week has decreased from the previous mean of 20.1 hours.Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel, May 19, 2018). Hotel occupancy data for February in two consecutive years are as follows. Current Year 1,476 1,800 Occupied Rooms Total Rooms 1,422 1,800 a. Formulate the hypothesis test that can be used to determine whether there has been an increase in the proportion of rooms occupied over the one-year period. Let P₁= population proportion of rooms occupied for current year P2 population proportion of rooms occupied for previous year - P2 less than or equal to 0 greater than 0 Ho P1 Ha P1 P2 b. What is the estimated proportion of hotel rooms occupied each year (to 2 decimals)? Current year .80 X Previous Year .77 c. Conduct a hypothesis test. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. Previous Year p-value = 0.0166 Using a 0.05 level of significance, what is your conclusion? We can conclude that there…A newsletter publisher believes that 48 % of their readers own a laptop. A testing firm believes this is inaccurate and performs a test to dispute the publisher's claim. After performing a test at the 0.10 level of significance, the testing firm fails to reject the null hypothesis. What is the conclusion regarding the publisher’s claim?
- According to the most recent General Social Survey, 70% of adults watch TV nightly. A researcher believes that the proportion of college students who watch TV nightly is less than this. To test this claim the research samples 400 college students and finds that 276 watch TV nightly. At the 0.05 level of significance does this data provide evidence to suggest that the proportion of college students who watch TV nightly is less than 70%? What is the p-value for this hypothesis test? Round to three decimal places.A university has decided to introduce the use of plus and minus grading as long as there is evidence that 60% of the faculty is in support of this change. Write an appropriate null hypothesis and alternate hypothesis to test if the proportion is greater than 60%.A certain statistics instructor participates in triathlons. The accompanying table lists times (in minutes and seconds) he recorded while riding a bicycle for five laps through each mile of a 3-mile loop. Use a 0.05 significance level to test the claim that it takes the same time to ride each of the miles. Does one of the miles appear to have a hill? Click the icon to view the data table of the riding times. Determine the null and alternative hypotheses. Ho: H₁: Find the F test statistic. F = Find the P-value using the F test statistic. P-value = What is the conclusion for this hypothesis test? (Round to four decimal places as needed.) (Round to four decimal places as needed.) C O A. Fail to reject Ho. There is insufficient evidence to warrant rejection of the claim that the three different miles have the same mean ride time. O B. Fail to reject Ho. There is sufficient evidence to warrant rejection of the claim that the three different miles have the same mean ride time. O C. Reject…