From the ANOVA results, test the hypothesis of equal means and show all five parts for the test. Use a=0.05 for the test Ho:? Ha:? F and PValue:? Reject Ho if:? Conclusion:?
Q: the Because npo (1- Po) = L 10, the sample size is 5% of the population size, and the sample…
A: Let p0 be the proportion of females aged 15 and older lived alone. Given that p0=59%=0.59 Sample…
Q: A research reports describing the results from a repeated measures T test states:t (22) = 1.71, p<…
A: According to the provided information, t (22) = 1.71 degrees of freedom = n-1 According to the above…
Q: The results from an independent-measures t hypothesis test are reported as "t(14) = 2.10, p > 0.05,…
A: Given df=14, level of significance=0.05, two tailed hypothesis
Q: Show that eachrequirementis met for a two population test b.If the requirements are met, use the…
A: Given n1=85n2=91p^1=0.82p^2=0.77
Q: Identify the type of hypothesis test below. H0:X≥17.9, Ha:X<17.9
A: Given information- We have given the hypothesis Null Hypothesis: Ho: X ≥ 17.9 Alternative…
Q: are conducting a study to see if the accuracy rate for fingerprint identification is significantly…
A: A hypothesis is said to be left tailed, if the population parameter is less than some hypothesized…
Q: In a paired t-test, failing to reject the null hypothesis proves that the paired means are equal. O…
A: In paired t test, Null Hypothesis: H0: The paired means are equal. Alternative Hypothesis: H1: The…
Q: Subiect Is achieving a basic skill level related to the location of the school? The results of a…
A: a) In this case, it is needed to check whether skill level and location are independent.
Q: Since the latest Axios poll said that 44% of Americans said that kneeling was appropriate, we will…
A: After asking the 50 people , Lets assume : Number of people who said kneeling during national anthem…
Q: If, in a sample of n=25 selected from a normal population, X=52 and S=10, what is the value of…
A:
Q: A research report describing the results from a repeated-measures t test states that “t(22) = 1.71,…
A: p-value reports how unlikely the results would have been observed if the samples were from null…
Q: A local pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The…
A: Claim : average time spent on a delivery does not exceed 26 minutes.
Q: The mean age of bus drivers in Chicago is 52.9 years. If a hypothesis test is performed, how should…
A: Solution: State the hypotheses. Null hypothesis: H0: µ = 52.9 That is, the mean age of bus drivers…
Q: in a hypothesis test for the difference of two proportions, the point estimate is calculated to be…
A: The point estimate is p^1-p^2=0.11, and the standard error is SE=0.0099.
Q: In performing a hypothesis T-test, the p-value was 0.00046 and the significance level was 5%. What…
A: Given, P-value: 0.00046 Level of significance = 0.05 The objective is to find the conclusion.
Q: Given the situation below, create a problem and determine (a) the null and alternative hypotheses,…
A: Hypothesis testing follows a standard five-step procedure.
Q: A large fishing farm with thousands of fish has been treating its fish to stop a spreading fungal…
A: From the given information, A simple random sample of 150 fish is taken and a careful examination…
Q: In a recent sample of 250 households, 45% of them owned a video game console. A hypothesis test was…
A: Type II error (β): The probability of fail to reject the null hypothesis when alternative…
Q: Based on a USA Today poll, 10% of the population believes that college is no longer a good…
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Q: Use the five steps in the hypothesis testing procedure for each answer. A national publishing…
A: Given: A national publishing house claims that 45% of all weekly magazine readers in South Africa…
Q: Solve the following problems following the sequential steps of hypothesis testing. 1. In a recent…
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Q: Assume that all conditions for testing have been met. t = 1.626; p = 0.057; At the 1% significance…
A: Test is that whether athletic women are more flexible than non-athletic women. It is given that…
Q: In each of Exercises, we have stated the purpose for performing a hypothesis test to compare the…
A: a)The test hypotheses are,
Q: Massachusetts Institute of Technology grants pirate certificates to those students who successfully…
A: Claim: Test the claim that those students who go on to earn pirate certificates are able to hit a…
Q: A random sample of 100 students at a high school was asked whether they would ask their father or…
A: There are two independent samples which are follows normal distribution. The number of successes,…
Q: Assume that the conclusion from an is that the null hypothesis is rejected, in other words that the…
A: According to the provided information, the null hypothesis is rejected, in other words, that the 6…
Q: A teacher is comparing the mean study time of his freshmen and senior students. He believes that his…
A:
Q: A hypothesis test was performed to decide whether houses are more prone to being lost to fire than…
A:
Q: A city police department is considering replacing thetires on its cars with a new brand tires. If μ1…
A: A city police department is considering replacing the tires on its cars with new brand tires. As…
Q: Find the P-value for the following values of the test statistic t, sample size n, and alternate…
A:
Q: Which of the following Python methods is used to perform an unpaired t-test for the difference in…
A: An unpaired t-test is used for determining the difference between the mean of two independent data…
Q: The CEO of a large financial institution claims that, on average, their clients invest more than…
A: Step 1: The assumptions for single mean test (one sample t-test) are as follows: The dependent…
Q: For a hypothesis test of Ho :H = 70 versus HA:µ < 70: • The given sample has a test statistic of…
A: We have the values, Xbar = 67.1 and ? = 18.3 And n = 36 . We have to find p-value ?
Q: The mean age of principals in a local school district is 50.7 years. If a hypothesis test is…
A: Given that Population mean = µ = 50.7
Q: Given H₁: Mean waiting time is less than 5 hours. Which of the following best 1 describes the…
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Q: Utilizing the previous table: A sample of 25 cities have been classified as high or low on their…
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Q: The ___________ is a value used in making a decision about the null hypothesis and is found by…
A: The Test statistic is a value used in making a decision about the null hypothesis and is found by…
Q: State the null and alternative hypotheses for the situation described below for a statistical test.…
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Q: For a lower tail hypothesis test, where p-value = .03. Which of the following is correct? a. If…
A: Decision Rule: If p-value ≤ α, then reject the null hypothesis. Option a: Conclusion: Given p value…
Q: To gauge how her fellow lawmakers view the proposed “Child Car Seat" Law, 12 randomly selected…
A: The asserted claim regarding the members supporting the law in terms of proportion is to be tested…
Q: In a two-tailed test of hypothesis, the sign in the alternative hypothesis is: not equal to b.…
A:
Q: A manufacturer of shampoo claims that 42% of the shampoo users prefer brand X. To test this claim, a…
A: Solution-: Given: n=59,x=20,P0=0.42,α=0.1 Claim: A manufacturer of shampoo claims that 42% of the…
Q: Since the p-value is less than (or equal to) the level of significance, the null hypothesis is…
A: Result When p value<= level of significance then we reject the null hypothesis When p value >…
Q: Express the null hypothesis and the alternative hypothesis in notation form in the following…
A: To express the Null hypothesis and Alternative Hypothesis in notation form for the given statment…
Q: each of the tests, what would be the conclusion if the test were carried out using the α = 0.05…
A: As the population S.D is known, w will use z test. The null and alternative hypotheses are, Ho: \mu…
Q: The mayor of a town has proposed a plan for the annexation of an adjoining community. A political…
A: Here we need to state the null and alternative hypothesis.
Q: The results of an independent-measures research study are reported as 'p > .05'. What was the…
A: We have to give conclusion.
Q: following depression scores are for a sample of ten people who were tested before and after…
A: Hypothesis testing is conducted for the parameters of the population such as population mean,…
Q: Find the P-value for the following values of the test statistic t, sample size n, and alternate…
A: From the provided information, The value of the test statistic t = 3.635 Sample size (n) = 4 H1: µ…
Q: (b) Based on your answer to part (a), which statement below is true? Since the p-value is less than…
A: Given: H0: mu =9 H1: mu is not equal to 9 Level of significance = 0.05
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- In the Chernobyl nuclear accident it is estimated that 30,000 people received an average dose of 45 REM. For this population, using the linear hypothesis, how many "normal" deaths from cancer are expected and how many additional deaths from the radiation of the accident? Group of answer choices 500 normal, 6000 additional 1000 normal, 4000 additional 2000 normal, 3000 additional 4000 normal, 1000 additional 6000 normal, 500 additionalIn a study of exhaust emissions from school buses, the pollution intake by passengers was determined for a sample of nine school buses used in the Southern California Air Basin. The pollution intake is the amount of exhaust emissions, in grams per person per million grams emitted, that would be inhaled while traveling on the bus during its usual 18-mile18-mile trip on congested freeways from South Central LA to a magnet school in West LA. (In comparison, a city of 11 million people will inhale a total of about 1212 grams of exhaust per million grams emitted.) The amounts for the nine buses when driven with the windows open are given in the table. 1.15 0.33 0.40 0.33 1.35 0.38 0.25 0.40 0.35 A good way to judge the effect of outliers is to do your analysis twice, once with the outliers and a second time without them. Give the 90%90% confidence interval with all the data for the mean pollution intake among all school buses used in the Southern California Air Basin that…Acupuncture. Research reported in 2008 brings to lightthe effectiveness of treating chronic lower back pain withdifferent methods. One-third of nearly 1200 volunteers were administered conventional treatment (drugs, physi-cal therapy, and exercise). The remaining patients got 30-minute acupuncture sessions. Half of these patientswere punctured at sites suspected of being useful andhalf received needles at other spots on their bodies.Comparable shares of each acupuncture group, roughly45%, reported decreased back pain for at least six monthsafter their sessions ended. This was almost twice as highas those receiving the conventional therapy, leading theresearchers to conclude that results were statisticallysignificant.a) Why did the researchers feel it was necessary to havesome of the patients undergo a “fake” acupuncture?b) Because patients had to consent to participate in thisexperiment, the subjects were essentially self-selected—a kind of voluntary response group. Explain why…
- A U.S. Food Survey showed that Americans routinely eat beef in their diet. Suppose that in a study of 49 consumers in Illinois and 64 consumers in Texas the following results were obtained from two samples regarding average yearly beef consumption: Illinois Texas = 49 = 64 = 54.1lb = 60.4lb S1 = 7.0 S2 = 8.0 Formulate a hypothesis so that, if the null hypothesis is rejected, we can conclude that the average amount of beef eaten annually by consumers in Illinois is significantly less than that eaten by consumers in Texas.A researcher has access to 100 participants for an independent sample design study, and she is hoping to achieve power = .80.What effect size will her data need to achieve to make that possible?In a public opinion survey, 60 out of a sample of 100 high-income voters and 40 out of a sample of 75 low-income voters supported a decrease in value-added tax, VAT. Conclude at the 5% level of significance that the population of voters favouring a VAT decrease differs between high- and low-income voters. (Where p1 is the proportion of all high-income voters who supported a decrease in VAT; p2 is the same for the low-income voters). The rejection region to test the above hypothesis at the 5% significance level (rounded off to two decimals) is: A. T < -1.96 B. T < -1.64 or Z > 1.64 C. Z < -1.96 or Z > 1.96 D. Z < -1.64 E. None of the preceding
- In a public opinion survey, 60 out of a sample of 100 high-income voters and 40 out of a sample of 75 low-income voters supported a decrease in value-added tax, VAT. Conclude at the 5% level of significance that the population of voters favouring a VAT decrease differs between high- and low-income voters. (Where p1 is the proportion of all high-income voters who supported a decrease in VAT; p2 is the same for the low-income voters). The hypotheses are: A. H0: p1 - p2 = 0 vs H1: P1 - p2 ≠ 0 B. H0: p1 - p2 > 0 vs H1- P1 - p2 < 0 C. H0: p1 - p2 > 0 vs H1: P1 - p2 ≠ 0 D. H0: p1 - p2 ≠ 0 vs H1: P1 - p2 = 0 E. None of the precedingThe owner of a chain of mini-markets wants to compare the sales performance of two of her stores, Store 1 and Store 2. Sales can vary considerably depending on the day of the week and the season of the year, so she decides to eliminate such effects by making sure to record each store's sales on the same sample of days. After choosing a random sample of 10 days, she records the sales (in dollars) for each store on these days, as shown in the table below. Day 1 2 3 4 5 6 7 8 9 10 Store 1 293 696 466 336 444 682 949 278 697 817 Store 2 127 739 220 441 303 471 680 119 791 585 Difference(Store 1 - Store 2) 166 −43 246 −105 141 211 269 159 −94 232 Based on these data, can the owner conclude, at the 0.01 level of significance, that the mean daily sales of the two stores differ? Answer this question by performing a…A research group is interested in the relationship between exposure to mold in households after a major hurricane and the onset of acute respiratory illness in children. Suppose an observational study is conducted over 10 years following the natural disaster and the following two-by-two table was created in order to address the relationship between exposure and outcome. Acute Respiratory Illness No Acute Respiratory Illness Total Mold 378 156 534 No Mold 73 260 333 Total 451 416 867 Calculate the incidence of acute respiratory illness in the exposed and unexposed. Calculate the relative risk for ARI due to exposure in this study Interpret your findings from part B
- The owner of a chain of mini-markets wants to compare the sales performance of two of her stores, Store 1 and Store 2. Sales can vary considerably depending on the day of the week and the season of the year, so she decides to eliminate such effects by making sure to record each store's sales on the same sample of days. After choosing a random sample of 12 days, she records the sales (in dollars) for each store on these days, as shown in the table below. Day 1 2 3 4 5 6 7 8 9 10 11 12 Store 1 504 909 591 658 232 697 236 425 659 625 737 772 Store 2 298 845 660 635 31 572 400 455 745 554 518 753 Difference(Store 1 - Store 2) 206 64 −69 23 201 125 −164 −30 −86 71 219 19 Send data to calculator Based on these data, can the owner conclude, at the 0.05 level of…At the end of summer, the total weight of seeds accumulated by a nest of seed-gathering ants will vary from nest to nest. If the expected total weight of seeds gathered by a randomly chosen nest is 5 pounds, and the standarddeviationis0.5pounds,whatistheprobabilitythatthetotalcombinedweightoftheseedsgatheredby100 nests will be larger than 495 pounds by the end of next summer? To answer this question most accurately, given the information available, we would use: 1. Chebyshev’s theorem 2.Markov’s theorem (3.The Central Limit Theorem 4.The joint probability that the weight of seeds is larger than 5 pounds in each nest.Consider a cohort study to compare the mortality rate of myocardial infarction (MI) in men with sedentary work (exposed group) to men with physically active work (unexposed). If in the exposed, there were 36,000 person (man) years of observation and 126 deaths whereas the unexposed had 24,000 man-years of observation and 44 deaths. Compute the following a) Mortality rate in each cohort? b) What is the relative risk of dying, comparing these 2 groups? c) What is the attributable risk of sedentary work? d) What is the attributable benefit of physical activity? e) If we assume that MI is associated with the mortality in this cohort (causality), what proportion of the disease in the higher group is potentially preventable?