In a CBS poll of 1289 adults, nationwide, asking whether they favor or oppose teacher and school officials carrying guns in school, 57% were opposed. The margin of error is 4 percentage points. 23. Statistic: 24. Margin of Error: 25. Interval: In a Gallup poll of 557 randomly selected adult, 51% said they were underpaid. The margin of error is 7 percentage points. 26. Statistic: 27. Margin of Error: 28. Interval:

Q: What is the  p-value for a sample of 220 undergraduate students with a sample mean credit card…

A: b)

Q: In a recent survey of 47 science teachers, 32 said the school-provided textbooks were adequate. Find…

A: Survey of 47 teachers N=47 n=32 Sample proportion = (n/N)  We have to calculate  Standard error of…

Q: In a sample of 550 students, 80% prefer online resources versus printed materials. The standard…

A:

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: In a study to estimate the proportion of smokers among the residents in a certain city and its…

A: To testH0:p1=p2H1:p1≠p2

Q: In a recent survey of 100 new vegetarians, 74 said that their new

A: Given information: The sample size is 100. Out of 100 new vegetarians, 74 said that their new…

Q: Based on the Nielsen ratings, the local CBS affiliate claims its 11 p.m. newscast reaches 41% of the…

A: From the given information, The sample size is 100 viewers. Among 100 viewers, 36% indicated that…

Q: A researcher wishes to estimate the number of households with two types of vegetables in their…

A:

Q: In 2001​, researchers investigated the effect of​ weed-killing herbicides on house pets. They…

A: a) Given that n1=840x1=445n2=116x2=20 Consider,…

Q: In a CBS poll of 1289 adults, nationwide, asking whether they favor or oppose teacher and school…

A:

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Let p denotes the population proportion of driver fatalities related to alcohol. The test is that…

Q: A poll of 80 students selected at random at Midtown University found that 20 were in favor of a fee…

A: Given  Total student in sample = 80 students No. of student in favour of feet hike = 20 students

Q: Twenty years ago, 46% of parents of children in high school felt it was a serious problem that high…

A:

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A:

Q: We need to estimate the percentage of businesses that plan to hire additional employees in the next…

A:

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96, p=0.54 and E=0.02.

Q: An event marketing executive thinks that the proportion of consumers who have seen his company’s…

A: In general terms, the larger the sample size n, the more precise of an estimate can be obtained of…

Q: should their sample size be?

A: here use solvin's formula

Q: As a manufacturer of golf equipment, the Spalding Corporation wants to estimate the proportion of…

A: From the provided information, Margin of error (E) = 0.025 Confidence level = 99% Assuming the…

Q: A newspaper reported the results of a political poll about which candidate likely voters preferred,…

A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: The margin…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: Given : p = 0.77 x = 14 n = 28 p^ = xn    = 1428    = 0.5

Q: In a poll of 1000 randomly selected voters in a local election, 415 voters were against school bond…

A: #Ans -  Given,           In a poll of n = 1000 randomly selected voters in a local election, x = 415…

Q: As the newly hired manager of a company that provides cell phone service, you want to determine the…

A: When we don't have any prior information about the population proportion, we generally take it as…

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: recent poll reports that between 53% and 59% of voters will vote for president george in the next…

A: The confidence interval is (53%, 59%).

Q: A sample of n = 64 scores is selected from a population with µ = 80 and with σ = 24. On average, how…

A: Given A sample of n = 64 scores is selected from a population with µ = 80 and with σ = 24. On…

Q: As a part of a class project, a teacher brings a jar of 200 jawbreakers of three different colors,…

A: Given that one student draws 30 jawbreakers from the jar, of which 9 are orange, 11 are red and 10…

Q: ple of 1000 Americans, it was discovered that 920 of them lived in neighborhoods with acceptable…

A: The point estimate (sample proportion) of the sample of size n can be defined as: p^=xn  Here, x =…

Q: The U.S. Department of Transportation, National Highway Traffic Safety Administration, reported that…

A: State the hypotheses. That is, there is no evidence that population proportion of driver fatalities…

Q: In 1949​,an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: Sample 1:In 1949 survey, there are 374 individuals out of 1,100 indicated that they are total…

Q: A researcher measures eye color for a sample of n = 50 people.  Which measure of central tendency…

A:

Q: In 1949, an organization surveyed 1100 adults and asked, "Are you a total abstalner from, or do you…

A: Given : x1=374n1=1100p^1=0.34x2=330n2=1100p^2=0.30We want to find the value of test stitistic.

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The value of p0 is 0.52 and the sample size n is 800.

Q: An automotive manufacturer wants to know the proportion of new car buyers who pref foreign cars over…

A: A sample of 897 cars; n=897 304 preferred domestic cars; x=304 α=0.05

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A:

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A:

Q: 8. Use the figure to the right, which shows the percentages of adults from several countries who…

A: Given Information: Country A: Sample size (n1) = 1003 Sample proportion (p^1) = 49% = 0.49 Country…

Q: In the past, 35% of the students at ABC University were in the Business College, 35% of the students…

A: It is given that the 35% students are in Business College, 35% students are in Liberal Arts College…

Q: A poll is conducted and shows that 46% of homes have a landline, with a margin of error of 3%. a.…

A: Given that a poll is conducted and shows that 46% of homes have a landline with a margin of error of…

Q: Suppose the true proportion of voters in the county who support a new fire district is 0.53.…

A: The mean of the binomial random variable obtained by the formula μ=np, where (n) is the number of…

Q: In a random sample of 100 voters, 52 said they planned on voting for the Republican presidential…

A: Identify the value of the sample proportion. The value of the sample proportion is determined below:…

Q: In a Gallup poll of 1236 adult respondents, 6% said that bad luck follows breaking a mirror. That…

A: The margin of error expresses the amount of the random variation underlying a survey's results

Q: According to the Humane Society, 33% of households in the United States own at least one cat. You…

A: From the given information p Value is 0.092. We want to interpret it.

Q: ut of 200 people sampled, 28 said they prefer Coke over Pepsi. What is the point estimate for the…

A: It is an important part of statistics. It is widely used.  Since the question has multiple sub parts…

Q: Wildlife biologist inspects 153 deer taken by hunters and find 32 of them carrying Lyme disease…

A: According to the provided information, n=153x=32p=xn=32153=0.209

Q: A poll found that 71% of people out of a survey of size 130 watch at least three hours of TV per…

A: From the given information,   A poll found that 71% of people out of a survey of size 130 watch at…

Q: A university dean is interested in determining the proportion of students who receive some sort of…

A: Given: Confidence level=95%Margin of error E=2% From the Standard Normal Table, the value of z* for…

Q: suppose you select a simple random sample of 75 douglas college student and you find that 8 are left…

A: It is given that the sample size n is 75 and x is 8.

Q: A researcher plan to conduct a survey about how capable the students are in conducting research. If…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…