A random sample of 1002 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxùry you could do without?" Of the 1002 adults surveyed,532 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below.Click here to view the standard normal distribution table (page 1).Click here to view the standard normal distribution table (page 2).(c) Construct and interpret a 95% confidence interval for the population proportion of adults in the country who believe that televisions are a luxury they could do without. Select the correctchoice below and fill in any answer boxes within your choice.(Type integers or decimals rounded to three decimal places as needed. Use ascending order.)O A. There is a% probability the proportion of adults in the coentry who believe that televisions are a luxury they could do without is betweenandO B. We are% confident the proportion of adults in the country who believe that televisions are a luxury they could do without is betweenand(d) Is it possible that a supermajority (more than 60%) of adults in the country believe that television is a luxury they could do without? Is it likely?It isV that a supermajority of adults in the country believe that television is a luxury they could do without because the 95% confidence intervalIT. n inteane n animal Desat ind A random sample of 1002 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxùry you could do without?" Of the 1002 adults surveyed,532 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below.Click here to view the standard normal distribution table (page 1).Click here to view the standard normal distribution table (page 2).(a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions are a luxury they could do without.p=(Round to three decimal places as needed.)(b) Verify that the requirements for constructing a confidence interval about p are satisfied.V iswhich is10, and theThe samplea simple random sample, the value ofV less than or equal to 5% of the

A random sample of 1002 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxùry you could do without?" Of the 1002 adults surveyed, 532 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions are a luxury they could do without. p= (Round to three decimal places as needed.) (b) Verify that the requirements for constructing a confidence interval about p are satisfied. V is which is V 10, and the The sample a simple random sample, the value of less than or equal to 5% of the

A random sample of 1002 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxùry you could do without?" Of the 1002 adults surveyed, 532 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions are a luxury they could do without. p= (Round to three decimal places as needed.) (b) Verify that the requirements for constructing a confidence interval about p are satisfied. V is which is V 10, and the The sample a simple random sample, the value of less than or equal to 5% of the

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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what proportation of a normal distribution is located between each of the following z-score boundaries? a. z=-1.64 and z=+1.64 b. z=-1.96 and z=+1.96 c. z=-1.00 and z=+1.00
In a study to estimate the proportion of residents in a certain city and its suburbs who favor the construction of a nuclear power plant, it is found that 77 of 125 urban residents favor the construction while only 56 of 100 suburban residents are in favor. Is there a significant difference between the proportions of urban and suburban residents who favor construction of the nuclear plant? Make use of a P-value. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. Let urban residents correspond to population 1, let suburban residents correspond to population 2, and let a success be a resident who favors the construction of a nuclear power plant. Identify the null and alternative hypotheses. OA. Ho: P₁ P2 H₁: P₁ P2 D. Ho: P₁ P2 H₁: P₁ = P2 Find the test statistic. B. Ho: P₁ = P2 H₁: P₁ P2 E. Ho: P₁ = P2 H₁: P₁ P₂ (Round to two decimal places as needed.) C. Ho: P₁ P2 H₁: P₁ = P2 OF. Ho: P1 P2 H₁: P₁ = P2
The normal distribution plays an important role in statistics. Write a briefdescription on each of the following aspects: i) the key features of a normaldistribution; ii) two variables which occur naturally as a normal distribution; iii) a variable where you would prefer to use the median as the measure of centraltendency.
"In a standard normal distribution, what is the mean? Options: A. -1 B. O C. 1 D. 2"
Find the values of mean and S.D. from the following data relating to a normal distribution. 10% of the items are under 40. 95% of the items are under 75.
According to the Carnegie unit system, the recommended number of hours students should study per unit is 2. Are statistics students' study hours different from the recommended number of hours per unit? The data show the results of a survey of 16 statistics students who were asked how many hours per unit they studied. Assume a normal distribution for the population. 1.5, 2, 2.9, 3.8, 4.6, 1.1, 1.8, 2.6, 1.4, 2.8, 4.5, 1.2, 1, 0.7, 3, 1.2 What can be concluded at the αα = 0.05 level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion The null and alternative hypotheses would be: H0:H0: ? μ p Select an answer < ≠ = > H1:H1: ? p μ Select an answer < ≠ = > The test statistic ? z t = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? > ≤ αα Based on this, we should Select an answer reject fail to…
According to the Carnegie unit system, the recommended number of hours students should study per unit is 2. Are statistics students' study hours more than the recommended number of hours per unit? The data show the results of a survey of 12 statistics students who were asked how many hours per unit they studied. Assume a normal distribution for the population. 1.2, 4.3, 4.5, 1.4, 1.5, 2.7, 1.8, 2.4, 1.3, 2, 2.2, 1.3 What can be concluded at the αα = 0.05 level of significance? A. Thus, the final conclusion is that ... The data suggest the populaton mean is significantly more than 2 at αα = 0.05, so there is enough evidence to conclude that the population mean study time per unit for statistics students is more than 2. The data suggest the population mean is not significantly more than 2 at αα = 0.05, so there is enough evidence to conclude that the population mean study time per unit for statistics students is equal to 2. The data suggest that the population mean study time per…
Women are recommended to consume 1870 calories per day. You suspect that the average calorie intake is larger for women at your college. The data for the 11 women who participated in the study is shown below: 1799, 1703, 2097, 2112, 1824, 1956, 2072, 2113, 1951, 1872, 2126 Assuming that the distribution is normal, what can be concluded at the a = 0.01 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Họ: ?v Select an answer v H: ? vSelect an answer c. The test statistic (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is ? f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... O The data suggest that the population mean calorie intake for women at your college is not significantly more than 1870 at a = 0.01, so there is insufficient evidence to conclude that the population mean calorie intake for women at your college is more than 1870. (Please show your…
A random sample of 1009 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without? Of the 1009 adults surveyed, 525 indicated that televisions are a luxury they could do without. Complete parts (a) through (d) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2) BECCHE (a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions are a luxury they could do without. (Round to three decimal places as needed.) (b) Verify that the requirements for constructing a confidence interval about p are satisfied. The sample Ya simple random sample, the value of is which is 10, and the less than or equal to 5% of the (Round to three decimal places as needed.) (c) Construct and interpret a 95% confidence interval for the population proportion of adults in the country who believe that…
In a recent poll, 45% of survey respondents said that, if they only had one child, they would prefer the child to be a boy. Suppose you conducted a survey of 160 randomly selected students on your campus and find that 79 of them would prefer a boy. Complete parts (a) and (b) below. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... (a) Use the normal approximation to the binomial to approximate the probability that, in a random sample of 160 students, at least 79 would prefer a boy, assuming the true percentage is 45%. The probability that at least 79 students would prefer a boy is 3636. (Round to four decimal places as needed.)
a. (True or False) The weekly consumption of favorite beverages from this survey hasapproximately a normal distribution, explain your decision. b. Based on the histogram, which one is greater: mean or median? Explain why.c. Which summary statistic would be a better representation of the center for this sample:mean or median?
If a set of observations is normally distributed, what percent of these differ from the mean by (a) more than 2.20? (b) less than 0.32g? Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table.