A machine puts out 16 imprefect articles in a sample of 500. After the machine is repaired, puts out 3 imprefect articles in a batch of 100. Has the machine been improved?

Q: A student downloaded 4 music files to a portable music player. in how many different orders can the…

A: If you like the solution then please give it a thumbs up.. The Answer is:       Different Orders =…

Q: A small-town mechanic says that 8% his customers come in for an oil change. When  1000 samples were…

A: Target population means, the set of elements that we want to know more about

Q: A person going to a party was asked to bring 5 different bags of chips. Going to the store, she…

A: From the given information, There are 18 varieties. A person going to a party was asked to bring 5…

Q: Suppose the profit the Honda dealership makes on the next 5 Accords it sells are: 443, 1,058, 766,…

A:

Q: Find the pooled estimate for 21 = 54, x2 = 51, n1 = 186 and n2 = 181. Round your answer to the…

A: Given; x1=54x2=51n1=186n2=181 Pooled estimate for proportion is given as- p¯=x1+x2n1+n2

Q: The United States Environmental Protection Agency6 reports that in 2006, each American generated 4.6…

A: Please find the explanation below. Thank you

Q: Which types of car were driven by more than 623 respondents in the survey?

A: Here use proportion from given pie chart And calculate no of people drive that type of car

Q: A researcher wants to find out the number of students he needs to urvey in a school provided that…

A: Given : total no pf students in a school  N=5000 with margin of error e=5%  To find sample size…

Q: Que. How many 5-man squads could be chosen from a company of 20 men?

A: No. of ways of choosing 5 - man squads out of 20 men = C520…

Q: When studying wildlife populations, biologists sometimes use a technique called “mark-recapture.”…

A: Consider x as the total population. The proportion can be written as, 580=30x

Q: se a study revealed 5*

A: Given, a study revealed 57% of all subjects possessed trait A, 28% possessed trait B, and…

Q: A company manufactures eyeglasses for different retailers. In March 2010, they tested to see how…

A: The random variable is the number of lenses that were scratched. Here, n=21 and p=0.175.

Q: If 2% of the components produced by a machine are defective, what is the average number of defective…

A:

Q: A worker at a frozen yogurt store has 2 3/4 cups of frozen yogurt to give to customers as samples.…

A: We have to find no. Of samples , using all the frozen yogurt.

Q: Use the values on the number line to find the sampling error X=33 =4.03 to The sampling error is

A:

Q: In a recent survey, 52 said they had a dog, 64 said they had a cat and 25 both pets. How many…

A:

Q: A political scientist surveys 38 of the current 146 representatives in a state's legislature. What…

A: Size of the sample (n) = 38 Size of the population (N) = 146

Q: The population of Hungary has been modeled by P = 9.919(0.998)',

A:

Q: A large university has 24,000 student a randomly-selected sample of 750 students were surveyed  and…

A: Given that there are 24,000 students out of which a randomly selected sample of 750 students. out of…

Q: (490, 510)? ne sample mean.

A: Given Data Population Mean,μ = 500.0 Population Standard Deviation,σ = 80.0 sample…

Q: A person going to a party was asked to bring 4 different bags of chips. Going to the store, she…

A: Combinations: The number of combinations of r items selected from n items is, nr=n!n-r!r!

Q: In a village actually involved by anthrax, 70% of the goats were attacked, 85% have been inoculated…

A:

Q: A scientist surveys 2676 of the current 3308 patients taking a specific medication. What is the size…

A:

Q: Q. Mrs. Trahan samples her class by selecting 5 girls and called? Select one: O a. random O b.…

A: In stratified sampling, the population is divided in such a way that it is homogeneous within the…

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: 4. Mrs. Jones' class has 27 students. To the nearest ten, how many students are in Mrs. Jones'…

A: See attached file for a step by step explanation.

Q: our population? W

A: A population is a total group included in the survey. A sample is a specific group from which data…

Q: (a) E contains 0946 respondents. (b) ENF contains 514 respondents. (c) RUM contains respondents.

A:

Q: The table summarizes results from 979 pedestrian deaths that were caused by automobile accidents.…

A: Given :  DriverIntoxicated? Pedestrian Intoxicated? Yes No Total Yes 54 66 120 No 282 577…

Q: How many wolves were there in 1980?

A: The given graph is

Q: Q. Mrs. Trahan samples her class by picking 10 numbers from her hat and each number is assigned to a…

A: Given that Mrs. Trahan samples her class by picking 10 numbers from her hat and each number is…

Q: In last year, five ranndomly selected students took a math aptitude test before they began their…

A: a) Excel Procedure: Enter X and Y in Excel>Data>Data Analysis> ‘Regression’>Select Y…

Q: A machine puts out 10 defective units in a sample of 200 units. After the machine is overhauled it…

A:

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

A:

Q: P(female)?

A: It is given that Number of females = 20 Total = 40

Q: How many person are in a circular table if they make 24 arrangements?

A: Given , the person are in circular table make 24 arrangement . To find the number of person .

Q: if the 90% Ci for the population mean is ( -2.58, 7.54) what is the sample mean

A:

Q: A quality-control inspector examined 260 calculators and found 9 of them to be defective. At this…

A:

Q: what is 3 out of 10

A: Given,           3 out of 10.

Q: what many students had 8 pair of shoes?

A: Find out the number of students having 8 pairs of shoes

Q: A small-town mechanic says that 8% his customers come in for an oil change. When  1000 samples were…

A: It is given that a small-town mechanic says that 8% of his customers come in for an oil change.

Q: A political scientist surveys 29 of the current 155 representatives in a state's legislature. What…

A:

Q: In a Harris poll of 2302 adults, 14% said they have a tattoo. Approximately how many adults have a…

A: Given information- We have given that in a Harris poll of 2302 adults, 14% have a tattoo. We have to…

Q: As part of a statistics project, a teacher brings a bag of marbles containing 700 white marbles and…

A: Given data: Bag of marbles containing 700 white marbles and 300 red marbles

Q: How many hands of 5 playing cards (from a standard deck) contain exactly one pair of cards of equal…

A: We have to determine the number of hands of 5 playing cards containing exactly one pair of cards of…

Q: What is the average of 12.5, 19.5, 22.5, and 33.5?

A:

Q: Researchers estimated that a wooded area is home to 350 blue jays. In their second sample they…

A: topic - ratio and percentage

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.