Suppose 15% of adults in a certain country work from home. If we want to find the probability that fewer than 30 out of a random sample of 300 adults will work from home, 1. What is the associated z-score (to 2 decimals)? Z = 2. What is the probability? 30 (Round to 4 decimals.) 300

Q: In a certain year, 27.1% of all light vehicles were light trucks, 27.1% were SUVs, and 45.8% were…

A: Let L denotes light truck, S denotes SUV, C denotes Car and A denotes accident.

Q: If a researcher wants to estimate the proportion of customers of a coffee shop that favor the new…

A: Given data: Margin of error ( E) = 0.08 Population proportion = 0.75 Confidence level = 0.95 To find…

Q: In certain weather forecast , the chance of a thunderstorm is started as 13 % .Express the indicated…

A:

Q: About 8% of the U.A. Population catches the flu each season. Assuming everyone has equal probability…

A: From the given information, we have About 8% of the U.A. Population catches the flu each season…

Q: n a genetics experiment on​ peas, one sample of offspring contained 390 green peas and 141 yellow…

A:

Q: Suppose 48% of the banks in Switzerland are private organizations.   If a sample of 484 banks is…

A: When the sample size is large enough we can use the normal approximation by virtue of the Central…

Q: Suppose an actual census showed that 18.4% of the households in California have incomes in excess of…

A: It is given that n =750 and p =0.184.

Q: Suppose 55 % of the population has a college degree. If a random sample of size 496 is selected,…

A: Where,

Q: (1) The director of a health club conducted a survey and found that 23% of members used only the…

A: We have given that 23% of members used only the pool for workouts. The random variable X that is use…

Q: 1) The mean number of births per day is........? 2)  The probability​ that, in a​ day, there are 15…

A: Since , the number of atoms decayed during 365 days is 29522/365=80.8822 Let , X be the number of…

Q: A research study uses 800 men under the age of 60. Suppose that 40% carry a marker on the male…

A: From the given data P=40%=0.40

Q: A department store has determined that 36% of all their sales are credit sales. A random sample of…

A: Given: p=0.36 n=65

Q: According to a poll of​ adults, about 4848​% work during their summer vacation. Assume that the true…

A: From the given information, it is clear that sample size, n = 600.The probability of success, p hat…

Q: d. Based upon a smaller sample of only 150 St. Paulites, what is the probability that the sample…

A: Given Information: Population proportion of St. Paulites who drink bottled water more than once a…

Q: Suppose 47% of the population has a college degree. If a random sample of size 501 is selected, what…

A: It is provided thatp = 0.47, q = 1- p = 1-0.47 = 0.53 and n = 501Consider, the sampling distribution…

Q: Suppose 57% of the population has a college degree. If a random sample of size 770 is selected,…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: At a pre-school 54% of children prefer the colour red over the colour green. From a sample of 80…

A:

Q: (2) Of those mountain climbers who attempt Mt. McKinley, only 65% reach the summit. In a random…

A: Given data,p=65%=0.65n=16

Q: 22. Suppose 58% of American singers are Grammy award winners. If a random sample of size 764 is…

A: the pdf of normal distribution is = 1/σ * √2π * e ^ -(x-u)^2/ 2σ^2standard normal distribution is a…

Q: What is the probability of obtaining x= 50 or more individuals with the characteristic? That is,…

A: Sample size is n = 200 Population proportion is p = 0.2

Q: A study of 240 randomly selected residents of a subtropical resort city with 82,000 residents found…

A: It is given that n =240 and p =0.03.

Q: 1. A sample of 4 different calculators is randomly selected from a group containing 20 that are…

A: Q1: The number of defective calculators is 20 and the number of non-defective calculators is 10.

Q: a proportion of 0.4 are not satisfied with the service offered by the store. In a random sample of…

A: According to central limit theorem if the sample size n and population proportion p satisfies np≥10…

Q: Suppose that the true proportion of households with at least one car is T = .80. If a random sample…

A: Assume that π as the true proportion of households with at least one car.

Q: Q2. An association of coffee producers has estimated that 50% of adult workers drink coffee at least…

A: Binomial distribution allows us to compute the probability of observing a specified number of events…

Q: Suppose 45% of the doctors in a hospital are surgeons. If a sample of 844 doctors is selected,…

A: Solution: From the given information, the probability of the doctor in a hospital is a surgeon is…

Q: Suppose    52%    of    students    support    the    idea    of    paying    student    government…

A:

Q: Suppose that 4% of the 2 million high school students who take the SAT each year receive special…

A:

Q: About 35% of Americans will admit that they waste time regularly at work. A poll of 100 Americans is…

A:

Q: Suppose that one third of the cards in a scratch-and-win promotion gives a prize. a) Create a…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: It is estimated that 8.3% of all Americans have diabetes.  Suppose that a random sample of 74…

A: It is given that:

Q: Suppose 40% of all vehicles are trucks. Of the next ten vehicles that pass on the road, what is (a)…

A:

Q: In a clinical trial, 3% of the patients in the study experienced fatigue as a side effect. Suppose…

A: Given that  n=20 , p=3%=0.03 , q=1-p=1-0.03=0.97 X~Binomial(n=20 , p=0.03) X=Number of the patients…

Q: Suppose 44 % of the students in a university are baseball players. If a sample of 853 students is…

A: Where,

Q: Alex makes mistakes in a with an average of 1.2 mistakes per class. In a given class, what is the…

A: Given that  Average =λ=1.2 Here we use poisson probability distribution.  P(X=x) =e-λ*λx/x!       X=…

Q: In a genetics experiment on​ peas, one sample of offspring contained 405 green peas and 31 yellow…

A: Given In a genetics experiment on​ peas, one sample of offspring contained 405 green peas and 31…

Q: Suppose 40% of all vehicles are trucks. Of the next ten vehicles that pass on the road, what is: a)…

A: Given that probability of observing a truck=40% =0.40 Probability of not being a truck= 1- p=q=…

Q: mber is used to receive both voice calls and fax message

A: Here it is given that- Total number of sample (n) = 25 Sample proportion (p) = 30100=0.3 As n and p…

Q: About 8% of the U.S. population catches the flue each season. Assuming everyine h?as equal…

A: The formula for calculating odds is given below:

Q: An engineering school reports that 51% of its students were male (M), 33% of Type number- its…

A: P(M)=0.51 P(A)= 0.33 P(M and A)= 0.24 The general addition rule of probability is, P(M or A) = P(M)…

Q: Suppose 45 % of the doctors in a hospital are surgeons. If a sample of 844 doctors is selected, what…

A:

Q: According to a poll of​ adults, about 40​% work during their summer vacation. Assume that the true…

A: From the given information, Sample size (n) = 500 Probability of success (p) or adult work during…

Q: It is known the 60% of toddlers have too much screen time. A randome sample of 8 toddlers were…

A: Given: 60% of toddlers p=0.60 n=8 we want to find probability that 4 have too much screen time

Q: It is estimated that, during the past year, 28% of all adults visited a therapist and 43% ef all…

A:

Q: Suppose 49% of the registered voters in a country are Republican.   If a sample of 701 voters is…

A: Given information: It was stated that 49% of the registered voters in a country are Republican. The…

Q: by the Yankelovich Partners for USA WEEKEND magazine, 60% of all consumers have called an 800 or 900…

A: See the handwritten solution From the give information p=0.60 n=20

Q: 9. Finally--if someone loses 17 points after 60 rolls, how unlucky are they? That is, what is the…

A:

Q: Suppose 42% of the banks in Switzerland are private organizations.   If a sample of 442 banks is…

A: It is known that, the mean of the sampling distribution of p-hat is equal to the population…

Q: Suppose that the proportions of blood phenotypes in a particular population are as follows: B АВ…

A:

Q: An experiment consists of flipping a weighted coin with Pr[H]=0.8Pr[H]=0.8. The experiment ends when…

A: It is given that the probability of getting a head is 0.8. The coin is flipped at most two times.…