A public health unit in Ontario collected mosquitoes in several areas to test for West Nile Virus (WNV). Among 560 pools of mosquitoes collected and tested last year, the ratio of positive to negative samples was 3:67. How many mosquito pools tested positive?

Q: In order to have a margin of error of 2%, people should be surveyed.

A: we are given that 24% people consider summer as their favourite season (p) = 0.24 to find  number of…

Q: In 2017, 77 out of 100 Americans claimed to have read at least one book during the year. Write this…

A:

Q: Out of 200 people sampled, 28 said they prefer Coke over Pepsi. What is the point estimate for the…

A: From the given information, x=28n=200 Point estimate: p^=xn=28200=0.14

Q: Estimate the measure of ZGHI to the nearest 10°. H

A:

Q: In a class with 25 student there are 6 student very talentet in the subject of art. What percentage…

A:

Q: If there is 15,000,000 of occupied sf of office space in San Antonio, an 75,000 office workers in…

A:

Q: If the price of gold is $238.00/ounce, calculate the value of gold in a 120.0 g ore sample that is…

A: Given Price of gold

Q: A researcher reports an F-ratio with df=3,70df=3,70 for an independent-measures research study.…

A: Given: A researcher reports an F-ratio with df=3,70

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: Helga scored in the 70th percentile rank on an exam. If 300 students took the exam, how many…

A: Given: percentile rank of Helga: 70th           total number of students who took exam: 300 students…

Q: The National Research Council recommends keeping a 1 : 3 copper to zinc ratio in a horse's diet. If…

A:

Q: A national automobile association detemines that the mean fuel consumption for vehicles in a…

A: Solution: Let X be the  fuel consumption of vehicles in particular state has normal distribution…

Q: In a survey of 1536 adults, 36% responded "yes" to the survey question. How many adults answered…

A: From the provided information, Sample size (n) = 1536 36% responded “Yes” to the survey question.…

Q: In a recent study, 46% of people enjoy country music.  If 200 people are surveyed about their…

A: Given : Proportion (prop.) of people enjoy country music p = 46% = 0.46 Sample size of people n =…

Q: What is the proportion of the total incidence of CHD in smokers that is attributable to smoking? Use…

A: Given Information: Total no. of participants=4560No. of Total smokers=2249No. of smokers having…

Q: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. How…

A: A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. It is…

Q: A researcher reports an F-ratio with df=2,27 from an independent-measures research study. How many…

A: Given, A researcher reports an F-ratio with df=2,27 from an independent-measures research study. Let…

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

A:

Q: What is the measure of PD?

A: From the figure  FD is diameter , Therefore, ∠FED=90∠FEP+∠PED=9035+∠PED=90∠PED=90-35∠PED=55

Q: A management survey for a company surveyed 235 employees. 105 of the employees surveyed were…

A: Given, Number of employees= 235 Female employees= 105 Male employee % =?

Q: identify a column in the table with data at a ratio level

A: Here you've given that data for Reputations of 10 companies in the U.S. and it is as follows, And…

Q: 2) The mean weight of 32 math students is 98.3 lbs. If the students could all stand on the scale…

A: Solution 2 Xbar=98.3, n=32, total weight=∑i=1nXi=?

Q: In a class of 10 students, James got 3rd position from the lowest. What is his percentile rank?

A: Given data: In a class of 10 students, James got 3rd position from the lowest. To find: What is his…

Q: what percentage of bus drivers had 3 or more traffics acccidents

A: From the provided information, Sample size (n) = 700 Total frequency of 3 or more traffic accidents…

Q: An article in the Archives of Internal Medicine reported that in a sample of 224 men, 73 had…

A: Here 224 men and 232 women are selected randomly. 73 of the men had elevated cholesterol levels,…

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: A television commercial claims that 3 out of 4 dentists prefer GRIN toothpaste. If they surveyed 200…

A:

Q: what percentage of the men worked?

A: men women total work 15 23 80 not work 23 28 51 total 38 93 131 what percentage of the…

Q: Calculate the incidence rate of Lupus in men older than 45 years old per 1000 population? Calculate…

A: Using the given table we have to Calculate the incidence rate of Lupus in men older than 45 years…

Q: What percentage of the blocks are red?

A:

Q: 20 out of 800 products were found to be defective. At the same rate, how many defective parts will…

A:

Q: In a survey of 3121 people, 412 are under-vaccinated. What is the proportion of under-vaccinated…

A: Given data, Total no of people n=3121 No of people under vaccinated is x=412 What is the proportion…

Q: In a survey 300 adults were interviewed, 123 said they had yearly medical checkup. Find the 95% for…

A: Sample size is n = 300 Number of adults who had yearly medical checkup, X = 123 The critical value…

Q: On a test, Tarina missed 8 out of 52 questions. What is the ratio of correct to incorrect answers on…

A: Given that:  Total number of questions on test= 52  Number of missed questions = 8 Find the ratio of…

Q: An entertainment company surveyed 360 elementary school children and found that 153 of them were…

A:

Q: For the  past month, 60 new cases of a disease were added to an existing 540 cases. If 2500 people…

A: New cases = 60  Existing cases = 540 Total Cases = 600

Q: In a sample of 169 students, 16 said they have donated blood. What percent of the students have…

A: Given that, In a sample of 169 students, 16 said they have donated blood.

Q: What is the average miles per gallon (mpg) for all new cars? Using Consumer Reports, a random sample…

A:

Q: How many performers earned exactly 1 star?

A: Given: Total number of performers, N = 140 Percentage of performers got 1 star = 15%

Q: What is the measure of ¿LMQ?

A: Solution of the problem as follows

Q: On a recent survey, 60% of people said they preferred walking to running. If 540 people liked…

A: Number of people who liked walking = 540 Percentage of people who like walking = 60%

Q: The percentage of men who meet the height requirement is %.

A: Men's height are normally distributed with : Mean , µ = 68.7 Standard deviation , σ = 3.4

Q: What is the percentage of deaths that occurred in 2011?

A: We have given that the total number of fatal motor vehicle traffic crashes in the United States for…

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: A small town has a total population 25000 out of which 13000 read "Nav bharat" and 10500 read "The…

A: We will find out the required value.

Q: The number of children born in a city during a period was 15,628 and the total population of the…

A: Given problem Given that   The number of children born in a city during a period = 15,628 Total…

Q: A city has 100200 women aged 15-49 and 40896 children under age 5. The Child woman ratio is O a. 480…

A: Given, No of women aged 15-49 n = 100200 No of children under age 5 x = 40896

Q: At a local dunkin donuts a survery showed that out of 1060 customers eating lunch 318 ordered coffee…

A: Probability: The ratio of the number of favorable outcomes to certain event and total number of…