According to a recent study, 62% of adults of age 65 and older do not have sufficient funds saved for retirement. What is the probability that in a sample of 150 adults of age 65 and older, less than 100 do not have sufficient funds saved for retirement?

Q: Based on historical data, your manager believes that 33% of the company's orders come from…

A: It is given that n =89 and p =0.33.

Q: ased on historical data, your manager believes that 37% of the company's orders come from first-time…

A:

Q: Based on historical data, your manager believes that 26% of the company's orders come from…

A: Given data, n=181 p=26%=0.26 P(X<0.29)=? μ=p=0.26σ=p(1-p)n=0.26(0.74)181σ=0.0011

Q: Based on historical data, your manager believes that 33% of the company's orders come from…

A:

Q: Based on historical data, your manager believes that 32% of the company's orders come from…

A: Given p=0.32n=89 Let the sample proportion be denoted by p^

Q: Based on historical data, your manager believes that 37% of the company's orders come from…

A:

Q: Based on historical data, your manager believes that 29% of the company's orders come from…

A:

Q: According to a Pew Research Center comprehensive survey, 35% of employed adults of age 62 and older…

A: Given that 35% of employed adults of age 62 and older say they have pushed back their retirement…

Q: It is estimated that 0.55 percent of the callers to the Customer Service department of Dell…

A: It is estimated that 0.55 percent of the callers to the Customer Service department of Dell…

Q: According to a 2009 Reader's Digest article, people throw away about 9% of what they buy at the…

A: Given that

Q: Based on historical data, your manager believes that 26% of the company's orders come from first -…

A:

Q: ACcording to a study conducted by a public health school, a child seated in the front seat who was…

A: Given to a study conducted by a public health school, a child seated in the front seat who was…

Q: Based on historical data, your manager believes that 29% of the company's orders come from…

A: The question is about sampling dist. of sample prop.Given :Popl. prop. of company's order come from…

Q: Based on historical data, your manager believes that 26% of the company's orders come from…

A: Given information Population proportion = 0.26 Sample size = 175 Probability that the sample…

Q: t is reported that the market share of iphones is 40%. (i.e. 40% of all cell phones are…

A: Given data, p=40% =0.40 n=50 P(X=22)=?

Q: 11 of the 744 digital video recorders​ (DVRs) in an inventory are known to be defective. What is the…

A: From the provided information,11 of the 744 digital video recorders​ (DVRs) in an inventory are…

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: It is known that 17% of people ride public transport without paying for it. We talk to 85 people who…

A: Consider that p is population proportion people, who ride public transport without paying for it.

Q: A researcher believes that 4%4% of females smoke cigarettes. If the researcher is correct, what is…

A: Where,

Q: Based on historical data, your manager believes that 33% of the company's orders come from…

A:

Q: Based on historical data, your manager believes that 33% of the company's orders come from…

A: Given: n= Sample size =52p= Probability of population proportion of orders from first time…

Q: According to an article, 22.6% of Internet stocks that entered the market in 1999 ended up trading…

A:

Q: A national survey reported that 31% of adults in a certain country have hypertension (high blood…

A: Let X denote the no.of adults in a certain country have hypertension and it follows binomial…

Q: n a survey of 1,772 U.S. adults, 294 said that they were very confident in the nutritional…

A: We know that  Sample size n= 1772  , total number of confident = 294 ,  X= 4

Q: A hotel manager calculates that 12% of the hotel rooms are booked. If the manager is right, what…

A: From the given information,P be the probability that hotel rooms are booked = 0.12.Sample size (n)…

Q: The opera theater manager calculates that 32% of the opera tickets for tonight's show have been…

A: The opera theater calculates that 32% of the opera tickets for tonight's show have been sold. That…

Q: According to a study, suppose the probability that a randomly selected child aged 8–12 spends more…

A: p=0.67n=5

Q: The amount of water consumed each week by Bronx residences is normally distributed. The population…

A:

Q: It is known that 17% of people ride public transport without paying for it. We talk to 79 people who…

A: Given,sample size(n)=79sample proportion(p^)=0.17

Q: Approximately 10% of all people are left-handed. Out of a random sample of 15 people, what is the…

A: We have given that Probability (p) = 0.10sample size (n) = 15

Q: Out of a survey of 400 customers, under the assumption that 0.5 is the correct proportion, what is…

A: From the provided information, Sample size (n) = 400 Proportion (p) = 0.5

Q: Based on historical data, your manager believes that 32% of the company's orders come from…

A: The probability that the sample proportion is greater than than 0.45 = 0.00352

Q: Based on historical data, your manager believes that 40% of the company's orders come from…

A:

Q: Suppose 51% of the population has a retirement account.   If a random sample of size 530 is…

A: Using ‘normal approximation conditions’ check whether the proportion can be approximated to normal…

Q: It is estimated that 0.45 percent of the callers to the Customer Service department of Dell…

A: P=0.45%n=1000

Q: According to weather data records from Vancouver International Airport (since 1981), there is some…

A: Let, X= number of days of rain or snow  n= number of observations= 7  p= probability of success=…

Q: Based on historical data, your manager believes that 27% of the company's orders come from…

A: Given that, n=188,p=0.27 The mean of the sampling distribution is, The Standard error of the…

Q: Based on historical data, your manager believes that 35% of the company's orders come from…

A: Concept of sampling distribution of sample proportion: Let a particular characteristic of a…

Q: According to the U. S. Statistical Abstract 2009, about 25% of persons age 18 - 24 participated in…

A: Given, p = 25% = 0.25 n = 64

Q: According to a study on teenage shopping behavior, it was found that 74% of female teens regularly…

A: Answer: Given that: p= 0.74 , n= 6 now will use Binomial probability P(X=x)=nx*px*(1–p)n–x,where…

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.