A sobriety test is 96% accurate. Suppose 2500 drivers were pulled over on suspicion ofintoxication, and suppose 12% of people pulled over were actually intoxicated (and the restwere sober). 1. What percentage of sober drivers failed the sobriety test? 2. What percentage of drivers who failed the sobriety test were sober? 3. What percentage of drivers who passed the sobriety test were intoxicated?

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

A: For country C n=1024,p hat =0.45 For country D n =1078 ,p hat = 0.41

Q: In 1945​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: Given α=0.05         n1=1100       (for recent survey)n2=1100       (for in 1945 survey) x1…

Q: The executives at Sandbachian, inc., having recently solved their widget crisis, have another…

A: Let ‘x’ be the no of defective manhole covers i.e x=40 and n=800 sample propotion (P)=x/n p=40/800…

Q: Because of the increased cost of housing, a national real estate board wants to compare the…

A: From the provided information, the hypothesis, that if two proportions, i.e., the proportion of…

Q: 37. Whatis the proportion of single women among those who are 30-44 years old? 38. Of the to tal…

A: The following information can be obtained from the table: Number of single women who are 30-44 years…

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

A:

Q: Because of the increased cost of housing, a national real estate board wants to compare the…

A:

Q: A factory for the production of light bulbs took a random sample of 200 units and found that 18 of…

A: The sample size is N=200N = 200 the number of defective cases is X=18X = 18 and the sample…

Q: d) What percentage of women are TALLER than 5 feet 11 inches? Round to nearest tenth of a percent. %…

A: Given Information: Mean height of adult men = 69.8 inches The standard deviation of height of adult…

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

A:

Q: What proportion of 20% defective shipments will be accepted?

A: Given : N=50 , n=5 , p=0.20 , M=N*p=50*0.2=10 Here , X​​​​​​​Hypergeometric (n=5,N=50,M=10) The…

Q: If the pipette is set to dispense 200 microliters, what percentage of time will it dispense greater…

A:

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

A:

Q: d. What percentage of students scored at least 66? e. How many students scored more than 98 on the…

A:

Q: Given that Germany has a death rate of 11.6 per 1000 and a population of 80,722,792, about how many…

A: The Germany has a death rate of 11.6 per 1000. That is 11.6%, and a population of 80,722,792.

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: In 1945, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Null and alternative hypotheses: The hypothesis which is tentatively fixed up under and tested for…

Q: In 1942 ​, an organization surveyed 1100   adults and​ asked, "Are you a total abstainer​ from, or…

A: The proportion of considered subjects, on which we are interested from a sample can be termed as…

Q: A Plitical pollster wants to know what proportion of voters think james burger should go away and…

A:

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: There are 1,000 students in a college. Out of 20,000 in the whole university, in a study 200 were…

A:

Q: 3. Suppose that you randomly picked 100 iPhones and calculated the average battery life for these…

A: The objective is to guess the average battery life of 100 iPhones.

Q: The sample of 400 tomatoes gave 310 red and 90 green ones. Does it contradict the hypothesis of…

A: Null hypothesis: H0:  The proportion of red and green tomatoes is equal to 3:1. Alternate…

Q: What represents a trial of taking six shots

A: A  trial is a single performance of a well-defined experiment. Hence, a trial has a well-defined set…

Q: a nutritionist wishes to determine, within 3% the true proportion of adults who do not eat lunch. if…

A:

Q: In 1944​, an organization surveyed 1100 adults and​ asked, "Are you a total abstainer​ from, or do…

A: We habe to find given proportion.

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: A sample of size 26 was gathered from high school seniors to estimate how many intended to attend…

A: Given that  Sample size (n) = 26 The proportion answering Yes (P) = 0.9 P = 0.9 ; Q=1-P = 1-0.9 =0.1…

Q: How many people do we need to sample? We would like to be within 3 percent of the actual answer and…

A:

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: Suppose you wish to estimate a population mean based on a random sample of n observations, and prior…

A: The population standard deviation is 12.7, the margin of error is 1.6 and probability(or confidence…

Q: group of children are surveyed about their favorite snacks . The results of the survey are shown…

A:

Q: The theater owner wants to sample 250 customers out of the 3500 in attendance. This will be a 1 in k…

A: Population is the set of all objects of interest. Sample is s subset of the population. It is not…

Q: An educator desires to estimate, within 4%, the true percentage of high school students who study at…

A:

Q: d) What percentage of women are TALLER than 5 feet 11 inches? Round to nearest tenth of a percent.…

A: formula for z-score is

Q: What percent of our campus is female? The Statistical Abstract of the United States, 112th edition,…

A:

Q: 1. What percentage of the employees originated from within the organization? 2. What percentage of…

A: Note: AS PER POLICY I HAVE CALCULATED 3 SUBPART PLZ REPOST FOR REMAINING  Here given table for…

Q: In 1946, an organization surveyed 1100 adults and asked, "Are you a total abstainer from, or do you…

A: Let p1 be the proportion of adults took the survey in 1946 and p2 be the proportion of adults took…

Q: a hospital wants to estimate the percentage of admitted patients who receive Medicare benefits. if…

A: To calculate the minimum sample size require to be 95% sure that margin of error will fall within 4…

Q: If a person’s z score equals 1.61, what percentage of the observations are more extreme?

A:

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: The US population is 13% African American.  If you were to take a SRS of 500 Americans, below what…

A: From the given data The US population is 13% African American

Q: It is bleieved that the percent of convicted felons who have a history of juvenile deliquency is…

A: Solution: State the hypotheses Null hypothesis: That is, the percent of convicted felons who have a…

Q: 1. What percentage of scores fell within ±1 SD for ZADHD?

A: Introduction: The "ZADHD" values indicate the z-scores of ADHD.

Q: Because of the increased cost of housing, a national real estate board wants to compare the…

A: (a): Null hypothesis H0: proportion of rural areas = proportion of metropolitan areas H1: proportion…

Q: With no preliminary estimate of the proportion known, how many young adults would you survey to…

A: It is given that margin of error (E) is 0.10 and the confidence level is 0.99.

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

A: Solution

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.