Based on historical data, your manager believes that 26% of the company's orders come from first-time customers. A random sample of 146 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.28 and 0.46?

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: According to a 2009 Reader's Digest article, people throw away about 13% of what they buy at the…

A:

Q: Eighteen percent of adults in Austria have completely paid off their house mortgage. You randomly…

A: Let X denote the number of 10 adults have completely paid off their house mortgage. Then X follows a…

Q: Based on historical data, your manager believes that 25% of the company's orders come from…

A: n=81p=0.25

Q: thirty four percent of us adults have very little confidence in newspapers. You randomly select 8 US…

A: Binomial distribution:The binomial distribution gives the probability of number of successes out of…

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: Suppose 56% of politicians are lawyers. If a random sample of size 564 is selected, what is the…

A: From the provided information, 56% of politicians are lawyers that is p = 0.56 Sample size (n) = 546

Q: According to a 2009 Reader's Digest article, people throw away about 11% of what they buy at the…

A: We have to find given probability

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

A:

Q: One thousand (1000) elderly males and 2500 elderly females were randomly selected for a dementia…

A: Introduction: It is given that among a sample of 1000 elderly males, 210 elderly males are diagnosed…

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

A:

Q: In a recent year, the Better Business Bureau settled 75% of complaints they received. You have been…

A: Solution: From the given information, p=0.75 and n=289.

Q: If the probability of choosing a red chip from a bucket is 0.4, What is the probability of not…

A: We have the probability of choosing a red chip from a bucket is 0.4

Q: 2002, approximately 39% of the people eligible to vote in mid-term elections voted. Suppose you have…

A: the number of trials n=7the number of successes x=0the probability of success on a single trial…

Q: Suppose that we know that 33.8% of the people born in the United States between 1936 and 1951 have…

A: The given situation follows binomial distribution. The proportion of people born in United States…

Q: A courier service company wishes to estimate the proportion of people in various states that will…

A: Consider that p is population proportion of people in various states that will use the courier…

Q: Suppose the budget has the support of 54​% of the voters. What is the probability that the​…

A: The proportion of population in support follows normal distribution with mean 0.53 and standard…

Q: According to a 2009 Reader's Digest article, people throw away approximately 12% of what they buy at…

A: Given Data population proportion,p = 0.12 sample size n = 171

Q: Suppose a recent study determined that 29% of Americans favorite ice cream flavor is If a sample of…

A:

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: 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: Suppose 56% of politicians are lawyers. If a random sample of size 564 is selected, what is the…

A: Given: 56% of politicians are lawyers that is proportion (p) = 0.56 Sample size (n) = 564

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: According to a 2009 Reader's Digest article, people throw away about 14% of what they buy at the…

A: Given data, p=14% =0.14 n=144 P(p<0.2)=?

Q: The USDA reports that 31% of four-member households spend less than $100 per week on groceries.…

A: Given p=31%=0.31 n=600 Here, the sample size is large. Hence, we can use normal approximation.…

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: A researcher believes that 7% of pet dogs in Europe are Labradors. If the researcher is right, what…

A: Given, p=0.07 1-p = 1-0.07 =0.93 n=538

Q: Just before a referendum on a school​ budget, a local newspaper polls 357 voters to predict whether…

A: Given, n = 357 p = 53% = 0.53

Q: Based on historical data, your manager believes that 31% of the company's orders come from…

A: Given information n = 175 orders

Q: A courier service company wishes to estimate the proportion of people in various states that will…

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: A study indicates that 80% of households have have a dog. You randomly sample 7 households. Find the…

A:

Q: a fast food center wants to estimate the proportion of people in its city that will purchase its…

A:

Q: According to the Center for Disease Control (CDC), the percentage of boys who are diagnosed with…

A:

Q: Given that 7.0% of the population of Canada have blood type O-negative, calculate the probability…

A: Given that 7.0% of the population of Canada have blood type O-negative so the probability of getting…

Q: 2016, 75.8% of women aged 20-24 had no children. What is the chance that if you wanted to meet a…

A: Given that : In 2016, 75.8% of women aged 20-24 had no children.  What is the chance that if you…

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

A: Given problem Given that   Based on historical data, your manager believes that 27% of the…

Q: Goofy's fast food center wishes to estimate the proportion of people in its city that will purchase…

A: Consider that p is population proportion of people in its city that will purchase its products.

Q: According to a 2009 Reader's Digest article, people throw away about 10% of what they buy at the…

A: Given information : Population proportion = p= 10% = 0.10 q = 1 - p    = 1 - 0.10 = 0.90 Sample size…

Q: It is estimated that 3.5% of current high school seniors will live past their 90th birthday. If a…

A:

Q: In a poll conducted by the general social survey, 70% of respondents said that their jobs were…

A: Probability of respondents said that their jobs were sometimes or always stressful(p)= 0.70sample…

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.