A presidential candidate's aide estimates that, among all college students, the proportion  p  who intend to vote in the upcoming election is at least  70% . If  154  out of a random sample of  250  college students expressed an intent to vote, can we reject the aide's estimate at the  0.05  level of significance? Perform a one-tailed test. Then fill in the table below. Carry your intermediate computations to at least three decimal places and round your answers as specified in the table. The null hypothesis: H0:   The alternative hypothesis: H1:   The type of test statistic: (Choose one)ZtChi squareF             The value of the test statistic: (Round to at least three decimal places.)   The p-value: (Round to at least three decimal places.)   Can we reject the aide's estimate that the proportion of college students who intend to vote is at least  70% ?

Q: The dotplot shows the body mass index (BMI) for 132 randomly surveyed people from a certain country.…

A: Step 1:To determine the number of people considered morbidly obese from the dot plot and calculate…

Q: You want to estimate the percentage of adults who believe that passwords should be replaced with…

A: Given,margin of error(E)=0.041α=1-0.95=0.05α2=0.025Z0.025=1.96

Q: Researchers developed a method for ranking the total driving performance of golfers. The method…

A: The question is about measures.Given :To find :a ) Value of mean.b ) Value of median.c ) Interpret…

Q: ow large a sample is necessary

A: Given :  Margin of error=E=0.11 Significance level=α=0.02 The critical value is , Zα/2=Z0.02/2=2.326…

Q: Which of the following is the best estimate of the number of HRDs from the Consumer industry, that…

A:

Q: The average annual cost (including tuition, room, board, books, and fees) to attend a public college…

A: Given Information : The average cost (including tuition , room , board  books and fees) to attend a…

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

A: a.   Formula for sample size is, Let us consider the population proportion is 0.5. Given that…

Q: A research company claims that 55% of American watch TV. You test this claim by randomly sampling…

A:

Q: The fifth unit of a 25-unit job took 14.5 hours to complete. If a 90 percent learning curve is…

A: Here, total time factor for 90 percent learning curve and unit of 5 is 0.783.                ∑Tn =…

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: The sample size is The number of students reading above the eighth-grade level is . The objective is…

Q: A statistical program is recommended. Occasionally, it has been the case that home prices and…

A: Rent Mortgage840539106210028236287797137966551071975953776851695762651723654

Q: A statistical program is recommended. You may need to use the appropriate technology to answer this…

A: Given data: Average monthly gas bill Age Square footage Rooms 70.2 16 2537 6 81.33 2 3457 8…

Q: You may need to use the appropriate appendix table or technology to answer this question.…

A: "Since you have posted a question with multiple subparts we will provide solutions only to the first…

Q: recent study indicated that 29% of the 100 women over age 55 in the study were widows. A.) How large…

A:

Q: You plan to conduct a survey to estimate the percentage of adults who have had chickenpox. Find the…

A: It is needed to find the number of people who must be surveyed if one wants to be 93% confident that…

Q: For one study, researchers sampled over 100,000 first-time candidates for the certified public…

A: Here in a one study, researchers sampled over 100,000 first-time candidates for the certified public…

Q: 4. Find the first, second, and third quartiles for the sales amounts in the data provided and…

A: 4. The first quartile can be obtained using the excel formula “=QUARTILE.EXC(A1:A38,1)”. From the…

Q: Consider the five-number summary of hourly wages ($) for a sample of sales managers. Min: 20.94…

A: five number summary : Min: 20.94 Q1: 37.64 Median: 77 Q3: 49.34 Max: 67.11   IQR = ?

Q: Suppose that you live near a McDonald's restaurant and you want to estimate the proportion of all…

A:

Q: Five pulse rates are randomly selected from a set of measurements. The five pulse rates have a mean…

A: a)The mean is calculated as x=∑i=15xi5                                               where ∑i=15xi…

Q: You want to estimate the percentage of adults who believe that passwords should be replaced with…

A:

Q: You want to obtain a sample to estimate the proportion of a population that possess a particular…

A: The confidence level is 98% and the margin of error is 5%.

Q: The "fear of negative evaluation" (FNE) scores for 11 female students known to suffer from the…

A: Confidence interval It is probability value by which one can say that population parameter are lying…

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

A:

Q: State the interval estimate that contains more possible values of the population mean (precision)…

A: z-value corresponding to 90% CI is 1.645   z-value corresponding to 95% CI is 1.96

Q: The indicated IQ score, x, is

A: It is given that the mean and the standard deviation is 100 and 15, respectively. That is, σ=15 and…

Q: The city council is considering a law that would ban smoking in all public facilities. A sample has…

A: There are two categorical variables which are Support and Age. Support has 2 types which are For and…

Q: You want to estimate the percentage of adults who believe that passwords should be replaced with…

A:

Q: In a one-way analysis of variance with three treatments, each with five measurements, in which a…

A: In a one-way analysis of variance with three treatments, each with five measurements We have to find…

Q: There were 49.7 million people with some type of long-lasting condition or disability living in the…

A: Givenn=1000p=0.193let "x" be the no. of persons having a…

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

A: It is given that margin of error (E) is 0.03 and the confidence level is 0.99.

Q: The state education commission wants to estimate the fraction of tenth grade students that have…

A: It is given that a sample of 333 tenth graders is drawn in which 260 read above the eighth grade…

Q: A survey of 2,510 golfers showed that 311 of them are​ left-handed. Find a point estimate for​ p,…

A:

Q: A foundation conducted a survey of physicians' attitude about health care reform, calling the report…

A: Total no of responses = 100000 Number of Physicians who completed survey = 2474 Number of…

Q: recent study indicated that 29% of the 100 women over age 55 in the study were widows. A.) How large…

A: Given thatMargin of error (E) = 0.05Significance level (α) = 1 - 0.90 = 0.10.

Q: he trade volume of a stock is the number of shares traded on a given day. The following data, in…

A: Given data represents the volume of a certain stock traded for a random sample of 40 trading days in…

Q: A group of 100 people, who lived at varying distances (in kilometers) from an island nuclear power…

A: The expected values in a Chi-Square test for independence are the values that are expected to be…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.