If eight out of every fifteen trick-or-treaters that came to your house last Halloween were dressed as cowboys, what proportion of trick-or-treaters were not dressed as cowboys?

Q: Students at Neilson Middle School are asked if they prefer watching television or listening to the…

A: Given that, The total number of students at Neilson Middle School is 150. The number of students,…

Q: A researcher wants to know what percentage of people who live in Germany are satisfied with their…

A: Solution: The population is the whole people of Germany.

Q: The International Brotherhood of Slide Whistlers wants to conduct a survey to find what proportion…

A: Let COnfidence interval be 90% Zc=1.645 E=3%=0.03 p=0.5 n=?

Q: Nationally, 83% of Americans have earned a high school diploma.  We want to see if the proportion of…

A: We have to find sample proportion.

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: 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: (a) How large should the sample be if the margin of error is to be less than $4? ANSWER: (b) If we…

A: here given , Population standard deviation  =  34$  Confidence level = 90%  MOE < 4 $

Q: The state transportation commission counted cars traveling east and west across a toll bridge. The…

A:

Q: In a shipment of 500 light bulbs, 25 of them were broken. What percentage of the light bulbs were…

A: Given ,  In a shipment of 500 light bulbs , 25 of them were broken . We have to find the  percentage…

Q: (b) What is the proportion of wolves that are female but do not hunt in medium-sized packs o are not…

A: Hi, the question have the multiple sub-parts and as per the guidelines I am obliged to answer first…

Q: If you have the following test scores: 84, 66, 78, 96, 60, and 72, what is your mean test score?

A: The answer is given below:

Q: A survey of 150 people revealed that 115 people like ketchup on their hot dogs, 85 people like…

A: Concept of General Addition Rule: For any two events A and B the General Addition Rule state that:

Q: a. What is the frequency for CEO ages berween 54 and 65? b. What percentage of CEOS are 65 vears or…

A: Consider the table ,  Age Frequency Relative frequency Cumulative relative frequency 40-44 3…

Q: what proportion of people in relationships are dissatisfied?

A: Let , X→N(μ=60 , σ=8) Since , an individuals with a score 50 or less is considered dissatisfied. Our…

Q: If a researcher measures two individuals on a ratio scale, then it is impossible to determine how…

A: Ratio scale is a form of quantitative variable measurement scale. Ratio scale makes it possible for…

Q: If 90% of the athletes who test positive for steroids in fact use them, and 10% of all athletes use…

A:

Q: requires

A:

Q: What percentage of pets are Rabbits?

A:

Q: Suppose that in a group of 800 women, the percentage who work is the same as in the sample here, how…

A: men women total work 15 23 80 not work 23 28 51 total 38 93 131

Q: If N is the size of the population and n is the size of the sample, find the sampling fraction?

A: From the provided information, The population size is N and the sample size is n.

Q: If in a village actually involved by anthrax, 70 per cent of the goats are attacked and pei cent…

A:

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

A:

Q: What percentage of students guessed between 41 and 44

A:

Q: The scores on a statewide chemistry exam were normally distributed with ?=73.08 and ?=6. Gabriela…

A: Given data isMean(μ)=73.08standard deviation(σ)=6

Q: The Ministry of Health in the Canadian Province of Ontario conducted the Ontario Health Survey by…

A: Stratified sampling :- When we have Homogenous distinguishable sub-groups. Then the population is…

Q: How many males were surveyed?

A: It is given that Total = 516 Number of females = 259 Number of males = 257

Q: Suppose that in a survey of five-year-olds, 54% liked the letter A, 58% liked the letter B, and 49%…

A: Solution:robability of liking A  P(A)=0.54 Probability of liking B  P(B)=0.58 Probability of liking…

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: 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: Can you think of an area where it might not be practical, for a variety of reasons, to sample 100%…

A: Yes, there are several areas where we cannot sample 100% of the population being covered to test.

Q: What proportion of students either own an automobile or lives in a dor

A: From the given information, P(own an automobile)=0.60 P(lives in a dormitory)=0.20 P(own an…

Q: How many distinct permutations are there in the word STATISTICS?

A: The total number of alphabets in the word STATISTICS is 10.   Based on alphabets. No, of S's n1 = 3…

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: our population? W

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

Q: If there are six groups being compared, how many mean comparisons will there be?

A: Given there are six groups.Here, it is required to find the total number of comparisons.

Q: If six out of every eleven trick-or-treaters that came to your house last Halloween were dressed as…

A: Given, Dressed as witches [ trick-or-treaters that came to your house last Halloween]= 6/11

Q: In an advanced ballet dance class, it is claimed that 42% of dancers can successfully perform a…

A: Given: Sample size, n=27 No. of dancers can successfully perform a double pirouette turn, x=13

Q: If the proportions of nests occupied is the same for golf and nongolf sites, what would be the…

A: It is given that the total number of bird houses with 1 nest is 100 and the total number of nongolf…

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

A: Given,margin of error(E)=0.04Let us assume sample…

Q: Suppose that in a survey of five-year-olds, 45% liked the letter A, 54% liked the letter B, and 50%…

A:

Q: In Ghana, all patients surviving a stroke are supposed to have their cholesterol levels measured…

A: (i) The hypotheses are; Null hypothesis: There is no association between an individual sex and the…

Q: A large group of college students was surveyed and the following information was obtained: 712 saw…

A: Let A is represented by Lady Gaga. B is represented by Arcade fire. And C s represented by Skrillex.…

Q: Based on this sample, how many of the 62,000 books in the collection should Mr. James expect to have…

A: It is given that Number of books with no damage = 1026 Sample size n = 1026+28+26 = 1080 Let p be…

Q: It's all about COMBINATION - From a population of 50 households, in how many ways can a researcher…

A: The population is given as 50 and 10 need to be selected. The total number of ways of selecting 10…

Q: In a group of 50 children, 11 cannot swim. What percentage can swim?

A: Givenno.of children in a group=50no.of children cannot swim=11

Q: Suppose that in a survey of five-year-olds, 42% liked the letter A, 54% liked the letter B, and 47%…

A:

Q: Suppose that in a survey of five year olds, 45% liked the letter A, 51% liked the letter B, and 48%…

A: It is given that, in a survey of five year olds, 45% liked the letter A, 51% liked the letter B, and…

Q: d. There are exactly 6 people in the sample who are NOT afraid of being alone at night.

A: Given : 50% of the Americans are afraid of being alone in a house at night ,  which means Americans…

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

A: Solution

Counting Principles

In statistics, the counting principle can be said to be the concept in which the quantity of an item is determined. There can be a single item, or a group of items, or items that are related to each other. In every possible set of items, the quantity of the possible item groups or their sorting measures can be determined with counting principles.