An employment agency requires applicants average at least 70% on a battery of four job skills tests. If an applicant scored 70%, 76%, and 84% on the first thi fourth test to maintain a 70% or better average?

Q: 15% of the coupons purchased go unused by the buyer. How likely that 18% of the 500 coupons sold…

A: p = 0.15n = 500p^=0.18

Q: Use the table below to answer this quesiton:   Leukemia  No leukemia  Exposed to benzene…

A: Risk of something is the odds of it taking place. The absolute risk of something happening is the…

Q: in a recent poll 13% of all respondents said they are afraid of heights

A: a) Here, n = 3, p = 0.13, (1 - p) = 0.87 and x = 3As per binomial distribution formula P(X = x) =…

Q: A recent drug survey showed an increase in the use of drugs and alcohol among local high school…

A: Provided data are, x1 = 65   n1 = 100 x2 = 60   n2 = 100

Q: The manager of a big corporation finds out that on average, 40% of sick days are logged on Mondays…

A: Employees register 40% of sick days on Mondays and Fridays.  Now, we know, if Saturday and Sunday…

Q: 1. Is the average suicide rate in January greater than or less than 1 in 100,000? 2. Are males or…

A: 1. From the graph it can be seen that in the              month of January suicide rate is below 1…

Q: (a) What percentage of books last longer than 10 years? (b) What percentage of books last less than…

A: Given: The lifespan of all high school text book is approximately normal with μ=9 yearsσ=2.5 years

Q: Only 41% of registered voters voted in the last election. Will voter participation be even lower for…

A: We have find hypothesis..

Q: The following table gives the results of daily inspections of 800 units of a standard-design…

A: Given information: The data represents the results of daily inspections of 800 units of a…

Q: 3. The manufacturer of a patent medicine claimed that it was at least 90% effective in relieving…

A: Null hypothesis states there is no statistical relationship between the two variables. Alternative…

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: Because of safety considerations, in May 2003 the Federal Aviation Administration (FAA) changed its…

A: Confidence interval : ( 180.024, 185.976) interpretation: b. We are 95% confident that the true…

Q: d) What proportion of people leave Vegas having lost between $200 and $800 (for a given year)?

A: (d) Obtain the Z-score for the random variable X equals 200. The Z-score for the random variable X…

Q: An epidemiological study projects that 25% of a population in certain area are expected to get sick…

A: This is a probelm of percentage. Lets solve this using the concept of the same.

Q: d. 82% of all of these types of trials are completed within how many days? (Please enter a whole…

A: Given : Population Mean,μ = 18.0 Population Standard Deviation,σ = 6.0

Q: Suppose in a single month a certain baseball team won 3 games and lost 21 what percentage of the…

A:

Q: 4.2 Each of 9 people going on a diet was weighed before given a Very-low-calorie diet (VLCD)…

A: a)

Q: The data collected from the 12 female & the calculations asking in the project are shown in the…

A:

Q: population

A:

Q: According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician…

A: Here we conduct Z test for proprtion.

Q: a. What percentage of adult men can fit through the door without bending?

A: Let , X be the height of men. Here , X→N(μ=67.1 , σ=3.6) Since , the door height is 56.2 in. Our aim…

Q: Find an estimate of o2 nswers up to two decimal places. ank 1

A: *Answer:

Q: In research about the population of a county with 100,000 inhabitants, a sample of 3000 households…

A: According to the provided data, a total of 3000 households were contacted to participate in the…

Q: According to a census company, 7.1% of all babies born are of low birth weight. An obstetrician…

A: Given: Part a: The expected number of low-birth weight births to 35 to 39 year old mother is, n × p…

Q: A market research study hopes to determine if the average sales of house entertainment units will…

A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…

Q: a skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p,…

A: It is given that the skeptical paranormal researcher claims that the proportion of Americans that…

Q: Because of safety considerations, in May 2003 the Federal Aviation Administration (FAA) changed its…

A: a) The 95% confidence interval for the population mean summer weight of Airline passenger is given…

Q: In a survey at a local university 52% of students say that they less than the recommended eight…

A: The problem concerns working out the percentages and interpreting .

Q: rvey of 10 young adults with credit card debt of more than $2,000 showed they id an average of just…

A: a). First, we will calculate the mean. The formula and calculations for the mean is as follows:…

Q: The efficiency expert at a computer company tested 40 engineers to estimate the average time it…

A: Given,sample size(n)=40sample mean(x¯)=12.73standard deviation(s)=2.06degrees of…

Q: USE THE FOLLOWING INFORMATION TO ANSWER THE NEXT TWÓ QUESTIONS. At a particular university, 60 % of…

A:

Q: A firm produces articles of which 0.1 percent are usually defective. It packs them in cases each…

A:

Q: How high must a vehicle's gas mileage be in order to fall in the top 15% of all vehicles?

A: Let X be the vehicle's mileage. Let μ and σ be the mean and standard deviation of all the vehicles.…

Q: A study at UNG divided female graduate students into three groups and had the students perform as…

A: In an observational study, we measure or survey members of a sample without trying to affect them.…

Q: The Closing the Gaps initiative by the Texas Higher Education Coordinating Board established the…

A: here we have to calculate the rate of change of increase student by year rate of increase = (1694247…

Q: In research about the population of a county with 100,000 inhabitants, a sample of 3000 households…

A: The number of households not willing to participate in the survey is 1200.

Q: A survey found that in a sample of 100 families, 37 owned cats. A survey done 5 years ago found that…

A:

Q: i) What is the estimated count after 12 hours? ii) When will bacteria count reach 52,000?

A: Given that the growth rate of bacterias= 36%= 0.36  So growth factor = 1+0.36= 1.36  Given that the…

Q: a. How many of the 125 people had resting pulse rates of more than 100? b. What percentage of people…

A: a. There are totally 125 people who had resting pulse rates. Count the number of dots that are above…

Q: Which orchard has the highest rate of apples per tree?

A: Here it is given that the three apple orchards and each orchard has a different number of trees and…

Q: It has been reported that the average credit card debt for college seniors at the college book store…

A: Given: Sample size, n = 50 Sample mean,   Standard deviation,

Q: A highway with four lanes in each direction was studied to see whether drivers preferred to drive in…

A:

Q: If 7 prunes provide 10% of vitamin A needed daily, what percent of the daily percent of vitiman A is…

A: In mathematics, a percentage is a number or ratio expressed as a fraction of 100. It is often…

Q: It was recently estimated that uninsured vehicles outnumber insured ones by about 7 to 6. If there…

A: Given that uninsured vehicles outnumber insured ones by 7 to 6

Q: A recent survey found that in a particular city of all poor children born in 1980, 11,500 enrolled…

A: Scaling of data:The scaling of data, or in other words, normalization of data is a mathematical…

Q: In a survey of 3343 adults aged 57 through 85​ years, it was found that 83.3%of them used at least…

A: Obtain the number of the 3343 subjects used at least one prescription medication. The number of the…

Q: The results of a recent study show that the proportion of people in the western United States who…

A: There are two hypothesis 1 null hypothesis H0 in which we support that the given claim is correct 2…

Q: Identify the following as either nominal, ordinal, interval, or ratio. 11. The political party to…

A: identify the following as either nominal, ordinal , interval or ratio. 11. the political party to…

Q: In a sample of 40 mice, a biologist found that 42% were able to run a maze in 30 seconds or less.…

A: For large n, the estimate of σP^2 = P(1-P)/n is σP^2 = P^(1 – P^)/n and we also have √n(P^ - P)/…

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.