A research center claims that 26% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of1100 adults in that country, 28% say that they would travel into space on a commercial flight if they could afford it. At a = 0.10, is there enough evidence toreject the research center's claim? Complete parts (a) through (d) below.Let p be the population proportion of successes, where a success is an adult in the country who would travel into space on a commercial flight if theycould afford it. State H, and H. Select the correct choice below and fill in the answer boxes to complete your choice.(Round to two decimal places as needed.)O A. Ho: psO B. Ho: p=OC. Ho: p2Ha:p>Ha:p<O D. Ho: p>O E. Ho:p<O F. Ho: p#Ha: psHa:p2Ha:p=(b) Use technology to find the P-value.Identify the standardized test statistic.(Round to two decimal places as needed.)Identify the P-value.P=(Round to three decimal places as needed.)(c) Decide whether to reject or fail to reject the null hypothesis and (d) interpret the decision in the context of the original claim.V the null hypothesis. ThereV enough evidence toV the research center's claim.ON ON+ A research center claims that 26% of adults in a certain country would travel into space on a commercial flight if they could afford it. In a random sample of1100 adults in that country, 28% say that they would travel into space on a commercial flight if they could afford it. At a = 0.10, is there enough evidence toreject the research center's claim? Complete parts (a) through (d) below.(a) Identify the claim and state Ho and H.Identify the claim in this scenario. Select the correct choice below and fill in the answer box to complete your choice.(Type an integer or a decimal. Do not round.)%.O A. The percentage adults in the country who would travel into space on a commercial flight if they could afford it is notO B. No more than% of adults in the country would travel into space on a commercial flight if they could afford it.OC.% of adults in the country would travel into space on a commercial flight if they could afford it.O D. At least% of adults in the country would travel into space on a commercial flight if they could afford it.Let p be the population proportion of successes, where a success is an adult in the country who would travel into space on a commercial flight if theycould afford it. State H, and H. Select the correct choice below and fill in the answer boxes to complete your choice.(Round to two decimal places as needed.)O B. Ho: p=OC. Ho: p2O A. Ho: psHa: p#Ha:p<Ha: p>O D. Ho: p>O E. Ho p<O F. Ho: p#Ha: p2Ha:p=Ha: ps(b) Use technology to find the P-value.Identify the standardized test statistic.O Timo Romaining: 00u

Given that, 26% of adults in a country travel into space on a commercial flight if they could afford…

Answered: člaims that 26% of adults in a certain…

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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Two surfers and statistics students collected data on the number of days on which surfers surfed in the last month for 30 longboard (L) users and 30 shortboard (S) users. Treat these data as though they were from two independent random samples. Test the hypothesis that the mean days surfed for all longboarders is larger than the mean days surfed for all shortboarders (because longboards can go out in many different surfing conditions). Use a level of significance of 0.05. Longboard: 4,8,8,4,7,7,10,6,8,10,12,11,9,15,11,16,12,9,12,18,19,15,11,15,19,20,9,23,21,23 Shortboard: 6,4,4,6,7,7,8,9,4,7,8,5,9,7,4,15,11,10,13,12,11,14,9,11,12,16,9,20,22,11 Determine the hypotheses for this test. Choose the correct answer below. O A. Ho: PL=Ps O B. Ho: HL Hs O F. Ho: HL> Hs Ha: HL # Hs Ha: HL = Hs Find the test statistic for this test. t= (Round to two decimal places as needed.) Find the p-value for this test. p-value = (Round to three decimal places as needed.) What is the conclusion for this…
disproportionately often. In fact, research has shown that if you randomly draw a number from a very large data file, the probability of getting a number with "1" as the leading digit is about 0.301. Now suppose you are an auditor for a very large corporation. The revenue report involves millions of numbers in a large computer file. Let us say you took a random sample of n = 223 numerical entries from the file and r = 48 of the entries had a first nonzero digit of 1. Let p represent the population proportion of all numbers in the corporate file that have a first nonzero digit of 1.(i) Test the claim that p is less than 0.301. Use ? = 0.05. (a) What is the level of significance?State the null and alternate hypotheses. H0: p < 0.301; H1: p = 0.301H0: p = 0.301; H1: p > 0.301 H0: p = 0.301; H1: p < 0.301H0: p = 0.301; H1: p ≠ 0.301 (b) What sampling distribution will you use? The standard normal, since np > 5 and nq > 5. The standard normal, since np < 5 and nq <…
An education researcher claims that at most 7% of working college students are employed as teachers or teaching assistants. In a random sample of 500 working college students, 9% are employed as teachers or teaching assistants. At a= 0.01, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. Let p be the population proportion of successes, where a success is a working college student who is employed as a teacher or teaching assistant. State H, and H,. Select the correct choice below and fill in the answer boxes to complete your choice. (Round to two decimal places as needed.) O A. Ho: p 0.07 O D. Ho: p> H: ps H p# OF. Ho: pz OE Ho: p# H p= H:p O D. The rejection regions are z
A manufacturer of laptop computers claims that only 1% of their computers are defective. In a sample of 600 computers, it was found that 3% were defective. If the proportion of defectives were really only 1%, there would be than 1 chance in 1000 of getting such a large proportion of defective laptops in the sample. Is there statistically significant evidence against the manufacturer's claim? Why or Why not?
At ABC College it is estimated that at most 10% of the students use public transportation to the college. Does it seem to be a valid estimate if, in a random sample of 120 students, 25 students use public transportation. (Use α = .01)
In this exercise involving paired differences, consider that it is reasonable to assume the populations being compared have approximately the same shape and that the distribution of paired differences is approximately symmetric. A sample of 10 men was used in a study to test the effects of a relaxant on the time required to fall asleep. Suppose data for 10 subjects showing the number of minutes required to fall asleep with and without the relaxant follow. Relaxant Subject No Yes 1 14 14 9 2 13 10 3 23 12 4. 6 10 5 9 8 16 8 5 7 00 8 10 8 11 7 9 13 11 10 8 6 Use a 0.05 level of significance to determine whether the relaxant reduces the median time required to fall asleep. State the null and alternative hypotheses. Ho: Median time without relaxant - Median time with relaxant ≤ 0 Ha : Median time without relaxant - Median time with relaxant > 0 O Ho: Median time without relaxant - Median time with relaxant H : Median time without relaxant O Ho: Median time without relaxant - = 0 Median…
one- Oishi and Schimmack (2010) report that people who move from home to home frequently as children tend to have lower than average levels of well-being as adults. To further examine this relationship, a psychol- ogist obtains a sample of n = 12 young adults who each experienced 5 or more different homes before they were 16 years old. These participants were given
The Substance Abuse and Mental Health Services Administration (SAMHSA, 2017) estimates that 10.9% of the population of the United States age 18–24 had an episode of depression in the previous 12 months. Suppose a researcher takes a random sample of 225 United States adults aged 18–24. Determine the value of the sample proportion, p, such that 5% of samples of 225 United States adults age 18–24 are greater than p. You may find software or a z-table useful. Give your answer precise to three decimal places. p = II
Determine whether the results appear to have statistical significance, and also determine whether the results appear to have practical significance. In a study of a birth sex selection method used to increase the likelihood of a baby being born female, 2031 users of the method gave birth to 995 males and 1036 females. There is about a 19% chance of getting that many babies born female if the method had no effect. Because there is a 19% chance of getting that many babies born female the method had no effect, the method couples would likely use a procedure that raises the likelihood of a baby born female from the approximately 50% rate expected by chance to the % produced by this method. (Round to the nearest integer as needed.) So, this method
A cat-lover claims that cats are just as smart as dogs. In order to back this claim up with some evidence she organizes a study at a large local pet daycare center. A random sample of 40 cats are selected and a random sample of 40 dogs are selected. Each of the selected animals is given one hour with a trainer in which the trainer attempts to teach them to roll over. Upon conclusion of the training, the proportion of dogs and proportion of cats that have learned this skill is computed. The trainer reports that she is 90% confident that the true difference in the proportion of all dogs and all cats (pD – pC) that can learn this skill with one hour of training is between –0.05 to 0.28. Which of the following conclusions can be made based upon this confidence interval? (A) Because most of the values in the confidence interval are positive, this proves that dogs are smarter than cats. (B) Because the point estimate of the confidence interval is positive, there is convincing evidence…
A researchers is interested in the amount of sleep an individual receives after consuming a sleeping aid (Melatonin, Valerian root, and Placebo). The researcher randomly selects individuals into either group. However, some individuals drop out of the study which results in unequal sample sizes. Melatonin: n=6, M=14, T=84, SS=60 Valerian: n=10, M=13, T=130, SS=90 Placebo: n=4, M=9, T=36, SS=37 N=20, G=250, x2=3377 Calculate the F-ratio
If a fair coin is tossed 10 times what is the probabilty that the first five are the same side? Ans. 1/16 = 6.25%.

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