Shortly after being put into service, some buses made by a certain company showed cracks under the main chassis. Suppose that a particular city uses 20 of these buses and that cracks appeared in 8 of them. In how many ways can a sample of 6 buses contain exactly 4 with visible cracks?

Q: In a fuel economy study, each of 3 race cars is tested using 5 different brands of gasoline at 7…

A:

Q: Five of a sample of 100 computers will be selected and tested How many ways are there to make this…

A: We will choose a group of 5 computers from 100 computers.

Q: Suppose you conducted an experiment with four independent groups. If you decided to use separate…

A: The number of t tests for independent samples (g) is 6.

Q: Suppose a finite population contains 4 items and 2 items are selected at random with replacement,…

A: Solution

Q: In order to conduct an experiment, 5 subjects are randomly selected from a group of 45 subjects. How…

A: It has been provided, Number of subjects that are randomly chosen (r) = 5 Total subjects (n) = 45

Q: Five balls are sampled without replacement from a bag containing 15 balls numbered 1,2,...,15. Find…

A: 5 balls are sampled without replace from a bag containing balls numbered 1 to 15. Total number of…

Q: sampling

A: Here sampling is without replacement so once a element drawn then not returned

Q: Assume that you do an experiment with 8 groups and the population means for all 8 are equal. If you…

A: The graph provided below shows the probability of Type I error:

Q: A recent year was randomly picked from. Researchers conducted a study to find out if there is a…

A: Solution: It is given that, at Cabrillo College, there were 2051 Hispanic students out of a total of…

Q: According to an almanac, 60% of adult smokers started smoking before turning 18 years old. (a) If…

A:

Q: In a random sample of 500 persons in the city A, 300 are found to be consumers of tea. In another…

A:

Q: How many samples of size n=3 can be drawn from a population size of 12?

A: 4)

Q: 5) If a population of N = 900 elements, it is desired to extract a sample of size n = 15. Using the…

A: It is provided that N = 900, that is, the population size is three-digit number that can be between…

Q: Suppose you conducted an experiment with four independent groups. If you decided to use separate…

A:

Q: In order to conduct an experiment, 5 subjects are randomly selected from a group of 36 subjects. How…

A: The formula for combination is nCr= n! / [r! (n – r)!] = [n (n – 1) … (n – r + 1)] / r!.…

Q: Suppose a simple random sample of size n= 75 is obtained from a popula specified characteristic is p…

A:

Q: In an experiment where 2 balls are drawn successively at random without replacement from a box…

A: The total number of balls is 2+3+2 =7

Q: A fair die was rolled five times, then what are the results and all random samples of size n = 3?

A: The mean is the average of all the observation. It is denoted by the symbol μ. It is calculated…

Q: The National Agricultural Statistics Service (NASS) conducts studies of the number of acres devoted…

A: Cluster sampling is a probability sampling approach that divides the population into different…

Q: According to an almanac, 80% of adult smokers started smoking before turning 18 years old. (a) If…

A: Given that, n=400,p=0.80 (a) The expected number of adult smokers to have started smoking before…

Q: claim a random sample of N = 15 parts will be taken and if more than two defective parts are found

A: Given: sample size, n = 15 p = 10% = 0.10 x =2 more than two defective parts are found P(X > 2)

Q: An urn holds 10 identical balls except that 2 are white, 2 are black, and 6 are red. An experiment…

A: It is given that there are 10 balls. But only 3 types of them are there.

Q: A foreign shipment of 5 foreign cars contains 2 that have light paint stains. Suppose an agency…

A: Given that, A foreign shipment of 5 foreign cars contains 2 that have light paint stains. Suppose…

Q: The Mathematics Department of the University of Louisville consists of 8 professors, 6 associate…

A:

Q: What sample size is necessary to get at least one object from each of 10 equal-sized groups.

A: There are 10 equal sized groups. If we select a random sample of size "n" from all the groups, then…

Q: How many possible samples of size 5 are possible from a population of size 70?

A: Combination Rule: The arrangement of r objects from n different objects is given by:

Q: Ten tablets are available for analysis, but because of time restrictions the scientist will only be…

A: # no of tablets n=10 then  nonof ways for selection of 3  tablets without repetition??

Q: Suppose we are using systematic random sample and we want to select a sample of 100 units from a…

A: From the given information, population size N = 21156. Sample size n = 100. Starting point of the…

Q: The Mathematics Department of the University of Louisville consists of 8 professors, 6 associate…

A: Since we are selecting a group of people so the arrangement does not matter. So we will use the…

Q: Suppose every day for 7799 days throughout an entire semester she chooses a random sample of five…

A: It was stated that every day for 7799 days throughout an entire semester she chooses a random sample…

Q: A random sample of n1 = 16 communities in certain state gave the following information for people…

A: Given data represents the rate of hay fever per 1000 population for people under 25 and for the…

Q: according to a report , 40 %people are afraid of dogs  1 in a simple random sanpling if 50 people,…

A: Solution: From the given information, probability of people afraid of dogs is 0.40 and n=50.

Q: A card is drawn from a standard deck of 52 playing cards. If the card is a club, the experimenter…

A: Given: A card is drawn from a standard deck of 52 playing cards. If the card is a club, the…

Q: Consider a finite population with five elements labeled A, B, C, D, and E. Ten possible simple…

A:

Q: Suppose a box conatins 4 blue, 5 white, 6 red and 7 green balls. In how many of all possible samples…

A:

Q: Following the model above, if 128 different people each observe one randomly chosen groups of four…

A:

Q: An urn holds 10 identical balls except that 3 are white, 3 are black, and 4 are red. An experiment…

A:

Q: In order to conduct an experiment, 4 subjects are randomly selected from a group of 47 subjects. How…

A:

Q: Suppose we have a set of 37 lightbulbs, and we wish to select a random sample of 5 distinct bulbs…

A: Given a set of 37 lightbulbs, we need to choose a distinct random sample of size 5 from this set,

Q: 80​%of adult smokers started smoking before turning 18 years old. ​(a) If 200 adult smokers are…

A: Given that   Percent Adult smokers started smoking before 18 years old  = 80% = 0.80   We know that…

Q: An urn holds 14 identical balls except that 3 are white, 7 are black, and 4 are red. An experiment…

A: There are total 14 balls. But only 3 types of them are there.  Let us denote W=white , B=black and…

Q: Assume we have a batch of 1000 batteries including 950 that are good and 50 that are defective.…

A:

Q: Have the requirements for a one-sample t-test been met? If they have not been met, leave the…

A: Yes, Mairin selected a random sample from a normally distributed population, and her sample contains…

Q: How many simple random samples of size 3 can be selected from a population of size 8?

A: Given The population size is N=8 Out of 8 , the number of random sample selected is N=3

Q: Suppose a sample of size 2 is randomly selected from the population, with replacement, as follows.…

A: Sampling distribution of the sample mean is an important concept in statistics.

Q: How many possible sample of size n=3 can be drawn from a population of size 12

A: Given - Population size = N = 12 Sample size = n = 3

Q: How many different simple random samples of size 5 can be obtained from a population whose size is…

A: Reviewing information, Sample size=n=5 Population size=N=38

Q: 5. At a certain college, it is estimated that at most 35% of the students ride bicycles to class. At…

A: Given information: It is found that 28 students out of 90 in a certain college ride bicycles to the…

Q: A study by a reputable research organization found that when presented with prints from the same…

A: Given data: The probability that fingerprint experts correctly identify the match is P(A)=93%=0.93.…

Q: 20% of Australian adults suffer from allergies. Given a random sample of ten adults, what is O ()"

A: We have to find given probability.

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.