1. It is a rule or method that leads to decision to accept or reject the hypothesis whensample values are gathered from the population under study.A. EstimationC. Hypothesis TestingD. Test StatisticВ. Нурothesis2. What mathematical model is appropriate for decision-making about populationproportion?A. Graphical representationB. Normal curveC. z- statisticD. None of these3. This refers to an intelligent guess, an assumption, or a claim about a populationparameter which may either be true or false.A. HypothesisB. Test statisticC. DecisionD. Interpretation4. The probability of rejecting the null hypothesis when it is true is called,A. Level of ConfidenceC. Power of the testD. Estimate intervalB. Level of Significance5. What is the purpose of hypothesis testing?A. To collect sample data and use them to formulate hypotheses about apopulation.B. To draw conclusions about population and then collect sample data to supportthe conclusions.C. To draw conclusions about populations from sample data.D. To draw conclusions about the known value of population parameter6. Which of the following statements is true when the null hypothesis is rejected?A. There is significant difference between the parameters being compared.B. There is no significant difference between the parameters being compared.C. The conclusion is guaranteed.D. The conclusion is not guaranteed.7. If in the z-test of proportions, the computed z is found on the rejection region thenthis means that:A. The sample proportion is equal to the hypothesized proportion.B. The sample proportion is eaual to the population proportion.C. The sample proportion is not equal to the hypothesized proportion.D. The sample proportion is not equal to the population proportion438. What is the value of a for the 95% confidence level of a two-tailed test?A. 0.01С. 0.10B. 0.05D. 0.0259. If p = 0.3, p = 0.4, n = 50 what is the value of z?A. 0.45В. 0.63С. 1.54D. 0.5510. Under the normal curve, the middle part representsA. Confidence levelB. Confidence intervalC. Acceptance regionD. All of these11. In conducting hypothesis test, our point of investigation or the hypothesis that we aretesting is always thea. claimb. nullc. alternatived. evidence12The critical value determines theregions.a. rejected and non-rejected regionsc. tail of the curved. hypothesis to beb. area under thecurveproven13 Suppose you have conducted a hypothesis test and the claim is represented bv H.. Yourtest statistic falls on the non-rejected region on the graph. Which of the following is acorrect interpretation in the context of the claim?a. there is enough evidence to support the claimb. there is enough evidence to reject the claimc. there is not enough evidence to support the claimd. there is not enough evidence to reject the claim

1. It is a rule or method that leads to decision to accept or reject the hypothesis when sample values are gathered from the population under study. A. Estimation C. Hypothesis Testing D. Test Statistic B. Hypothesis 2. What mathematical model is appropriate for decision-making about population proportion? A. Graphical representation C. z- statistic B. Normal curve D. None of these 3. This refers to an intelligent guess, an assumption, or a claim about a population parameter which may either be true or false. A. Hypothesis B. Test statistic C. Decision D. Interpretation

1. It is a rule or method that leads to decision to accept or reject the hypothesis when sample values are gathered from the population under study. A. Estimation C. Hypothesis Testing D. Test Statistic B. Hypothesis 2. What mathematical model is appropriate for decision-making about population proportion? A. Graphical representation C. z- statistic B. Normal curve D. None of these 3. This refers to an intelligent guess, an assumption, or a claim about a population parameter which may either be true or false. A. Hypothesis B. Test statistic C. Decision D. Interpretation

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

. Myers-Briggs: Actors Isabel Briggs Myers was a pioneer in the study of personality types. The following information is taken from MBTI Manual: A Guide to the Development and Use of the Myers-Briggs Type Indicator by Myers and McCaulley (Consulting Psychologists Press). In a random sample of 62 professional actors, it was found that 39 were extroverts. Let p represent the proportion of all actors who are extroverts. Find a point estimate for p. Find a 95% confidence interval for p. Give a brief interpretation of the meaning of the confidence interval you have found. Check Requirements Do you think the conditions np > 5 and nq > 5 are satisfied in this problem? Explain why this would be an important consideration.
Q7
a) Which of the following is the correct test statistic for this test? b) Degrees of freedom for this test? c) P-value for this test?
Statement I. One way ANOVA will be utilized. Statement II. We are dealing with uncorrelated sample means. Statement III. We are dealing with correlated sample means. Statement IV. N is equal to 15. * Treatments Participant No Phone Hand-Held Hands-Free 1 4 1 2 3 1 2 3 6. 3 2 4 3 1 5 4 "Hypothetical data from an experiment examining driving performance under three telephone conditions. Statements I, Il are TRUE Statements I, II, I are FALSE Statements I, I, IV are TRUE O None of the above
A sociologist is interested in the opinion of Minnesota teachers on the recent labor union law passed by Wisconsin lawmakers. a. What is the experimental unit? b.What is the population? c.What are the variables relevant to this study? Classify them as continuous, discrete, nominal, or ordinal. d. Explain how you would select a sample for this study. Explain pros and cons of your method.
1. In each of the following parts, state the statistical analysis technique or approach that youwould use and give reasons for choosing that analysis. No calculations are required.a. Upper Hill Medical Services would like to know not just whether patients have high bloodpressure, but also what influences having high blood pressure. The Institute of Diabetes andKidney Diseases conducted a study on 2,768 adult females. The following variables wererecorded number of times pregnant, plasma glucose concentration a 2 hours in an oral glucosetolerance test, diastolic blood pressure (mm hg), triceps skin fold thickness (mm), 2-hour seruminsulin (mu u/ml), body mass index (weight in kg/(height in m2)), diabetes pedigree function,age (years) and a test whether the patient shows signs of diabetes (coded 0 if negative, 1 ifpositive).b. Arodi and Company based in Mombasa Kenya is an online t-shirt sales company investedin Google AdWords advertising as follows KSh 1 million, KSh 1.5 million and KSh…
Identify which statistical test is to be used in the following problems. 1. Is the given sample mean of 74 production units per day equal to the population mean? 2. Would thirty high school graduating students change in their self-concept after knowing they had passed an important test? 3. Is employee’s rank correlated with efficiency rating? 4. Did the method of teaching interact with students’ learning styles? What is the interaction effect of the method of teachings and medium of instruction on the achievement of students in Probability and Statistics? 5. Is IQ level associated with gender? 6. Is there a significant difference between the two sections of Senior High School in terms of academic achievement in Calculus?
II. Statistical Data Analysis: Solve each given problem using the appropriate test statistic. 1. A survey of public opinion about the criminal justice system asked respondents to complete the following statement: "The criminal justice system treats offenders...." The researchers found the following distribution of responses by gender of the respondent: Gender of Respondent Female Male Too Lenient 15 40 About Right 50 35 Too Harsh 35 25 a. Is there a relationship between the gender of the respondent and perceptions of punishment severity? Use a 5% level of significance and outline each of the steps required in a test of statistical significance. b. Would your answer be different if the significance level were 0.01? Show the proof of your answer. c. What can you conclude about the relationship between gender and perceptions of punishment severity?
4.A prior study(by Pew Research 2021)found that 35 out of 50 randomly selected US adults between the ages of 18 to 29 use (or have used) Instagram. Construct a 99% confidence interval for the population proportion of US adults between the ages of 18 to 29 use (or have used) Instagram. (round to three decimal places) a.Identify the following: X, N, P b.Which distribution should you use for this problem? c.What is the corresponding critical value for a 99% confidence interval? d.Calculate the margin of error (3 decimal places) e.Construct a 99% confidence interval f. Interpret the interval.
4. Given the sample data in the table below: 12 10 15 19 23 5 12 10 12 19 10 19 34 19 19 15 a) Determine the mean, median, and mode of this data. Please show your work! 5 12 b) Determine the range and inter-quartile range of this data. Please show your work!
The data below show sport preference and age of participant from a random sample of members of a sports club. Is there evidence to suggest that they are related? Frequencies of Sport Preference and Age Swimming 85 ATTI Tennis Basketball 18-25 98 88 26-30 104 100 46 31-40 62 63 40 54 30 Over 40 63 What can be concluded at the = 0.10 significance level? a. What is the correct statistical test to use? O Homogeneity O Paired t-test O Goodness-of-Fit O Independence b. What are the null and alternative hypotheses? Ho: O The age distribution is the same for each sport. The age distribution is not the same for each sport. O Age and sport preference are dependent. O Age and sport preference are independent. H1: O Age and sport preference are independent. O The age distribution is not the same for each sport. O Age and sport preference are dependent. O The age distribution is the same for each sport.
1. Americans consume an average of 70 hot dogs per year. A researcher is skeptical of that value and randomly samples 600 people and computes a sample mean of 68.3 hot dogs. a. Which value above is a parameter and which is a statistic? b. If tomorrow you were going to sample 60 people, around what value do you think the sample mean will be? Do you think it will be exactly that value?