A humane society claims that less than 73% of households in a certain country own a pet. In a random sample of 700 households in that country, 490 say they own a pet. At α=0.01, is there enough evidence to support the society's claim? Complete parts (a) through (c) below.

A humane society claims that less than 73% of households in a certain country own a pet. In a random sample of 700 households in that country, 490 say they own a pet. At α=0.01, is there enough evidence to support the society's claim? Complete parts (a) through (c) below.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

me A humane society claims that less than 70% of households in a certain country own a pet. In a random sample of 700 households in that country, 462 say they own a pet. At a= 0.05, is there enough evidence to support the society's claim? Complete parts (a) through (c) below. nts (a) Identify the claim and state H, and H a 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.) ok O A. More than % of households in the country own a pet. nch O B. The percentage households in the country that own a pet is not %. Inc OC. % of households in the country own a pet. O D. Less than % of households in the country own a pet. ter Contents essible Resources Is for Success ols for Success lultimedia Library Purchase Options Click to select and enter your answer(s) and then click Check Answer. Discussions Check Answer Clear All 4 parts remaining <. Course Tools 口の P Type here to search
The proportion of adults living in a small town who are college graduates is estimated to be p=0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null hypothesis that p=0.6; otherwise, we shall conclude that p≠0.6. Complete parts (a) through (c) below. a) Evaluate α assuming that p=0.6. Use the binomial distribution. b) Evaluate β for the alternatives p=0.5 and p=0.7 (c) Is this a good test procedure? Consider a value of α to be relatively small if it is less than 0.1000 and relatively large if it is greater than 0.1000..
For a statistic to be a good estimator of a parameter, two properties it must satisfy are unbiasedness and minimum variance. Consider a sample of three observations X₁, X₂, X, where X, ~ Exp (0). That is, a sample of size 3 is taken from a population 2 3 following the exponential distribution with density function given by f(x) = 1e % if x > 0 0, Otherwise. Five possible estimators of are â‚ =X₁, Ô₂ = ¹/(X₁ + X₂), Ô‚ = =— (X₁ + 2X₂), Ô¸ = X, and Ô¸ = ¹⁄ (X₂ + X). 2 [Hint: Use the fact that for variable X we have E(X)= 0 and E(X²)=20² and Var(X) = 0². (a) Show that the five estimators given above are unbiased for 0. (b) Find the variances of each of the five estimators. (c) Which estimator will you choose for 0. Why?
Consider a test of Ho: = 75 performed with the computer. The software reports a two-tailed p-value of 0.1032. Make the appropriate conclusion for each of the following situations. a. Ha: 75, z = 1.63, a = 0.08 d. H: #75, z = -1.63, α = 0.01 a. Choose the correct answer below. O There is sufficient evidence to reject Ho- O There is insufficient evidence to reject Ho- b. Choose the correct answer below. O There is insufficient evidence to reject Ho- There is sufficient evidence to reject Ho c. Choose the correct answer below. O There is sufficient evidence to reject Ho- There is insufficient evidence to reject Ho- d. Choose the correct answer below. O There is sufficient evidence to reject Ho- O There is insufficient evidence to reject Ho
Spg
A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than 90%, a random sample of doctors was taken. Suppose the test statistic is z= -2.33. Can we conclude that H0 should be rejected at the a) α= 0.10 b) α = 0.05 c) α= 0.01 level?
In an early home game, an NBA team made 66 of their 100 free throw attempts. In one of theirlast home games, the team made 68 of 90 attempts. At α = .10, did the team significantlyimprove its free throw percentage (left-tailed test)?
A simple random sample of size n=200drivers were asked if they drive a car manufactured in a certain country. Of the 200 drivers surveyed, 104 responded that they did. Determine if more than half of all drivers drive a car made in this country at the α=0.05 level of significance. Complete parts (a) through (d).
Of the 200 randomly selected local fishers, 28 are solely fishing as income source and 172 have alternative or supplemental livelihood such as getting employed as a construction worker, farmer, carpenter, motorcycle/tricycle driver, selling/vending souvenir and other products, or working in a passenger boat batil or tripolante (i.e., captain or crew). Their estimated monthly income (in PhP) are shown below. Using α = 0.05, is there a significant difference in the monthly income of fishers whose sole livelihood is fishing compared to those with alternative/supplemental income sources? Assume that the fishers income is normally distributed a) Analyze manually b) Analyse using SPSS
A human factors psychologist is interested in how alcohol impacts driving performance. A sample of participants was randomly assigned into one of three different conditions of alcohol blood levels (abl). The participants then operate a driving simulator and each participant was measured on how much time (in seconds) they spent on a target when steering. The more time they spend on a target, the better their driving skills. What can the psychologist conclude with an α of 0.01? abl 1 abl 2 abl 3 221192171247234281238171 180146178134200170208156 180132172137154154176178 A) Obtain/compute the appropriate values to make a decision about H0.critical value = ; test statistic = Decision: B) Compute the corresponding effect size(s) and indicate magnitude(s).η2 = Magnitude= C) Conduct Tukey's Post Hoc Test for the following comparisons:2 vs. 3: difference = 1 vs. 3: difference = Conduct Scheffe's Post Hoc Test for the following comparisons:1 vs. 3: test statistic = 1…
An education researcher claims that at most 4% of working college students are employed as teachers or teaching assistants. In a random sample of 600 working college students, 6% are employed as teachers or teaching assistants. At a=0.10, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. Identify the claim in this scenario. Select the corect 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 of working college students who are employed as teachers or teaching assistants is not O B. At most % of working college students are employed as teachers or teaching assistants. OC. More than % of working college students are employed as teachers or teaching assistants. O D. % of working college students are employed as teachers or teaching assistants. Let p be the population, proportion of successes, where a success is a working college student who is employed as a…
An education researcher claims that at most 7% of working college students are employed as teachers a= 0.01, is there enough evidence to reject the researcher's claim? Complete parts (a) through (e) below. r teaching assistants. In a random sample of 500 working college students, 9% are employed as teachers or teaching assistants. At (a) Identify the claim and state H, 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.) A. At most 7 % of working college students are employed as teachers or teaching assistants. O B. % of working college students are employed as teachers or teaching assistants. O C. The percentage of working college students who are employed as teachers or teaching assistants is not %. O D. More than % of working college students are employed as teachers or teaching assistants. Let p be the population proportion of successes, where a success is a…