A scientist claims that pneumonia causes weight loss in mice. The table shows the weights (in grams) of six mice before infection and two days after infection. At a =0,10, is there enough evidence to support the scientist's claim? Assume thesamples are random and dependent, and the population is nomally distributed. Complete parts (a) through (e) below.MouseWeight (before)Weight (after)1 2 3 4 56022.7 21.6 20.6 20.6 21.7 22.921.3 20.9 19.9 20.2 20.6 21.7(b) Find the critical value(s) and identify the rejection region(s).Select the corect choice below and fill in any answer boxes(Round to three decimal places as needed.)complete your choice.OA t<B. 1> 1476OC. t< or t>(c) Calculate d and sa-d= 0.917 (Round to three decimal places as needed.)Calculate sa-S= 0.376 (Round to three decimal places as needed.)(d) Find the standardized test statistic t.t= 5.974 (Round to three decimal places as needed.)(e) Decide whether to reject or fail to reject the null hypothesis and interpret the decision in the context of the original claim.the null hypothesis. Thereenough evidence toV the claim thatin mice.

Given that Sample size n =6 Degree of freedom =df df= n-1 Level of significance =0.10

Answered: (c) Caloulate d and s d- 0.917 (Round…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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17 A university administrator believes first-year students, sophomores, juniors, and seniors attend football games in different, or unequal, proportions. Which teststatistic is appropriate for an associated test of hypotheses? a. Chi-Squared b.t c.Z d,F
The National Highway Traffic Safety Administration reports the percentage of traffic accidents occurring each day of the week. Assume that a sample of 420 accidents provided the following data. Sunday Monday Tuesday Wednesday Thursday Friday Saturday 63 47 50 48 55 70 87 a. Conduct a hypothesis test to determine if the proportion of traffic accidents is the same for each day of the week. What is the p-value? Compute the value of the x test statistic (to 3 decimals). Use Table 3 of Appendix B to find the p-value. The p-value is - Select your answer - Using a 0.05 level of significance, what is your conclusion? V - Select your answer - the proportion of traffic accidents is not the same for each day of the week. Conclude Cannot conclude tage of traffic accidents occurring on each day of the week (to 1 decimal). Sunday Monday Tuesday Wednesday Thursday Friday Saturday Percentage of traffic accidents, % What day has the highest percentage of traffic accidents? Monday Does this seem…
A baseball team claims that the mean length of its games is 2.8 hours. State Ho and H, in words and in symbols. Then determine whether the hypothesis test for this claim is left-tailed, right-tailed, or two-tailed. Explain your reasoning. State the null hypothesis in words and in symbols. Choose the correct answer below. O A. The null hypothesis expressed in words is, "the mean length of a baseball team's games is 2.8 hours." The null hypothesis is expressed symbolically as, "Ho: u= 2.8." O B. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at least 2.8 hours." The null hypothesis is expressed symbolically as, "Ho: u22.8." OC. The null hypothesis expressed in words is, "the mean length of a baseball team's games is at most 2.8 hours." The null hypothesis is expressed symbolically as, "Ho: uS2.8." O D. The null hypothesis expressed in words is, "the mean length of a baseball team's games is more than 2.8 hours." The null hypothesis is expressed…
29 An ecologist selected a random sample of 30 prairie dogs from a colony and found that the mean mass of the prairie dogs in the sample was 0.94 kilograms (kg) with an associated margin of error of 0.12 kg. Which of the following is the best interpretation of the ecologist's findings? A) All prairie dogs in the sample have a mass between 0.82 kg and 1.06 kg. B) Most prairie dogs in the colony have a mass between 0.82 kg and 1.06 kg. C) Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the sample. D) Any mass between 0.82 kg and 1.06 kg is a plausible value for the mean mass of the prairie dogs in the colony.
Answer the following to summarize the test of the hypothesis that each of A, B, C, and D is equally likely to be the correct answer on tests in these introductory college courses. Use the 0.05 level of significance for the test. (a) Determine the type of test statistic to use. Type of test statistic: ▼(Choose one) (b) Find the value of the test statistic. (Round your answer to two or more decimal places.) (c) Find the critical value. (Round your answer to two or more decimal places.) (d)Can we reject the hypothesis that A, B, C, and D are equally likely to be the correct answer on tests in these introductory college courses? Yes No
Use technology to find the P-value for the hypothesis test described below. The claim is that for a smartphone carrier's data speeds at airports, the mean is equal 15.00 Mbps. The sample size is nequals28 and the test statistic is zequalsnegative 1.395. P-value= (Round to three decimal places as needed.)
a) state the appropriate null and alternate hypotheses b) compute the P-value. Round answer to at least four decimal places. c) Determine whether null hypothesis is rejected
A random sample of 1067 teenagers (ages 12 to 17) were asked whether they played games online; 787 said that they did. What is the size of the sample? I What is the value (±0.001) of the statistic p? .
When debating the state appropriation for Penn State, the following question is asked: "Are the majority of students at Penn State from Pennsylvania?" (A majority is anything higher than 0.5). The school claims that there is a majority of students from Pennsylvania. A random sample of 500 students is taken and it is found that 278 of them are from Pennsylvania. Find the test statistic and p-value for this test. Round to two decimal places.
3. State or specify the null and alternative hypotheses in the following (use complete statements, not symbols): f. A COA auditor wants to determine if the mean monthly "ayuda" to poor Dagupan residents during the pandemic is really P5,000 as published. a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha: g. In an experimental group of 250 individuals, half were given regular doses of aspirin while the other half were given placebos with no effects. Test the claim that the aspirin group has a significantly lower heart attack rate than the placebo group. a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha: h. Is there a significant difference in the level of audit practice of accountants in terms of type of corporation, whether privately-owned or government-owned? a. Null Hypothesis, Ho: b. Alternative Hypothesis, Ha: i. Are there significant differences in the degree of influence encountered by the employees when grouped according to status of appointment, whether contractual or…
A college administrator claims that the proportion of students that are nursing majors is greater than 40%. To test this claim, a group of 400 students are randomly selected and its determined that 190 are nursing majors. The following is the setup for this hypothesis test: Ho : p=0.40 Ha: p > 0.40 Find the test statistic for this hypothesis test for a proportion. Round your answer to 2 decimal places. Provide your answer below: TestStatistic
Answer portion B)

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