4. A survey shows 47% of movie goers are males. A test is conducted to see if the proportion is less. 37% of movie goers eat popcorns while watching a movie. Ans:

Q: Nolan surveyed 7 teachers from each academic department at school. Each department has an equal…

A: Given: 7 teachers from each academic department surveyed Each department has an equal number of…

Q: c. How many of 45 randomly selected employees have a personal messaging frequency less than 170? d.…

A:

Q: 5. What percent of the sophomores watch TV for at least 15 minutes per night?

A: Following statistics is given for TV time   Minimum = 0 minutes Q1 = 15 minutes Q2 = 60 minutes Q3 =…

Q: A sample has SS= 20 and s? = 4. How many scores are in the sample?

A: Six scores are in the sample.

Q: A sample selected from a population gave a sample proportion equal to 0.60.

A:

Q: 3. In a Gallup Pool, 52% of 1038 surveyed adults said that second hand smoke is "very harmful". What…

A: Following information is given:   Total number of people survey = 1038 Percentage of people who said…

Q: 1. A local news report claims that 40% of the vehicles on the freeways are vans or SUV's. You go to…

A:

Q: When 3,011 adults were surveyed in a Pew Research Center poll, 73% said that they use the internet.…

A: Given Information: n = 3011 ¾ of all adults use the internet (p)  = 75% = 0.75   = 73% = 0.73 Step…

Q: ching basketball to football?

A: We have to use % formula to solve the problem

Q: 5. Several college students are surveyed about their college location and preferred locations for a…

A: Given  total number of students who prefer beach are 91. Total number of students who prefer skiing…

Q: In a sample of 508 men who worked at home, 32% of them were college graduates. a.) Among the 508 men…

A:

Q: 7.) How much does the Over the Rainbow Bakery sell 18 cupcakes for? 8.) What is the proportion of…

A: Ingredients For 4 dozen for 225 cupcakes cake ingredients     Shifted flour 6…

Q: A research report from an independent-measures study states that there are significant differences…

A: From the provided data we have, Degrees of freedom between group = k-1 = 2  Thus, k = 3 Degrees of…

Q: C) What percentage of CT scans in this target population would be positive?

A: Given: P(Cancer) = 3% = 0.03 P(No cancer) = 1-0.03 = 0.97. P(test positive|cancer) = 89% = 0.89…

Q: 35% of a sample of employees are vaccinated.if 390 are not vaccinated, how many are vaccinated

A:

Q: A survey of Hoosiers found that 57% are Pacers fans, 44% are Colts fans, and 35% are Pacers fans but…

A: Let P= Pacer fans  C= Colt fans So, P(P)= 57% = 0.57  P(C)=44%=0.44 So, 57% - 35%=22%= 0.22 are…

Q: What percentage of students guessed between 41 and 44

A:

Q: A sample of 9 students had the following result (measured in percent) on the exam in mathematics:…

A: Given that, Sample size = n = 9 students Population mean = µ = 57.9% Population standard deviation…

Q: 8. A research report from an independent-measures study states that there are significant…

A: The given information is as follows: F(3, 48) = 2.95, p < 0.05.

Q: A survey of 800 nurses yielded the following information: 430 were health club members, 555 were…

A: Given data, Total number of nurses=800 in which Health club member nurses =430 Smokers nurses =555…

Q: In a recent year, the most popular colors for light trucks were white, 30%; black, 17%; red, 14%;…

A: We have to use chi-square goodness of fit test. Hypothesis : H0 : p1 = 0.3,  p2 =0.17, p3=0.14,  p4…

Q: What proportion of Canadians spend between 8 and 16 hours watching Netflix per month? What…

A: Solution

Q: Since 1966, 45% of the No.1 draftpicks in the NBA have been centers. a) identify the population b)…

A: Population: In statistical enquiry our interest lies about gathering information about some…

Q: A medical researcher wants to do a study on the proportion of knee replacement surgeries that result…

A:

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Solution-: Given: M.E.=0.03,α=0.01, We take, p^=0.5 and  q^=0.5  We find how many residents do they…

Q: c)   If the scientists want to estimate the proportion of deer that carry Lyme disease ticks to…

A: We have given that,  Margin of error (E) = 0.02 and confidence level = 90% Then,  We will find the…

Q: 13. Does the last column of percentages in the table add up to 100%?Check the researchers'…

A: 13. The last column of percentages is given as: % 20.6 5.9 12.4 18.3 14.4 11.1 9.5…

Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.4. What is the p-value…

A: Solution

Q: 3) Two hundred students were surveyed and asked about what they prefer to eat for lunch. The table…

A: As per honor code guidelines I need to solve  only one question.

Q: Assume that 30% of city employees in Carson City ride the bus to work. Answer the following…

A:

Q: (a)  Do you think that the percentage of all American movie-goers who think the popcorn is…

A: Given that 12% of a random sample of 25 American movie-goers thought the popcorn sold at the movie…

Q: 19 2. How can you tell whether a greater percent of customers surveyed selected veggie burger or…

A:

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

A: Given, Margin of error, E = 0.04 Confidence level is 90% Level of significance, α = 1- 0.90 =  0.10…

Q: A sobriety test is 96% accurate. Suppose 2500 drivers were pulled over on suspicion ofintoxication,…

A: Given that the sobriety test is 96% accurate, 2500 drivers were pulled over on suspicion of…

Q: A state legislator wishes to survey residents of her district to see what proportion of the…

A: Answer:-  Given, Margin of error=7%=0.07 Confidence level=0.90 Let P=0.5 ( as we don't have sample…

Q: The Arizona Department of Transportation wishes to survey state residents to determine what…

A: Suppose p̂ is the sample proportion of the population, who would like to increase state-wide…

Q: Researchers asked 250 familles whether or not they were homeowners and how many cars they had. Their…

A:

Q: How many levels were used in the experiment?

A: Given information: Variable of interest=Effect of C2F6 flow rate on the uniformity of the etch on a…

Q: B. The average exam score for 10 students in a statistics class was 85. One student dropped the…

A: Given When n=10, average exam score for 10 students in a statistics x̄=85  When one student dropped…

Q: If the proportion of Heads is .25 out of 200 flips, what is the p-value? Round to three places.

A: Given : The proportion of Heads is .25 out of 200 flips.

Q: 2 Considering the 5800 enrollees in the College of Education, a researcher would like to make a…

A:

Q: mple is rder to be 99% confident that the sample proportion will not differ from the true proportion…

A: Given : Margin of error: ME = 0.06 sample proportion: p̂ = 0.23

Q: a) What proportion of the sampled wafers had (P 2 8)? b) What proportion of the sampled wafers had…

A: 5. a) The frequency is, Number of Particles Cumulative frequency Frequency Number of Particles…

Q: mr. One researcher wants to estimate the proportion of MU students who are vegetarian, 6 answered…

A: Sample size is 30. There are 6 students are vegetarians. The hypotheses are given below: Null…

Q: answer a A. the national percentage of automobile accident fatalities which are alcohol related is…

A:

Q: How could the survey question "Have you ever had a drink of alcohol?" be revised to obtain a valid…

A: Introduction :- We are given one survey question. We have to revise these questions to obtain valid…

Q: 72% of Americans said that they plan to travel in 2021, and 9% of those who plan to travelintend to…

A: For example we take 100 Americans 72% of Americans said that they planned to travel in 2021, 72% =…

Q: A radio talk show host with a large listening audience is interested in the proportion p of adults…

A: Given, A radio talk show host with a large listening audience is interested in the proportion p of…

Q: C1. A computer spam filter is 98% effective at sending spam emails to my junk folder, but will also…

A: Solution

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.