Based on historical data, your manager believes that 30% of the company's orders come from first-time customers. A random sample of 216 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.2 and 0.49? Note: You should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations.

Q: Suppose you have a population of adult male basketball players and you know their mean height is 190…

A: given data normal distributionμ = 190 cmσ = 7.2 cm

Q: Estimate the chance that the sample proportion was more than 45% using a normal approximation.

A: Given information: Given that , 40 % of the primary doctors have made claim that their patients…

Q: According to the Department of Education, 60% of college students enjoy taking Statistics. Suppose…

A: Let  X be the number of students who enjoy taking Statistics in a sample of 200. Given n = 200…

Q: About 74​% of all female heart transplant patients will survive for at least 3 years. Eighty female…

A: Given,sample size (n)=80sample proportion(p^)=0.74mean(μ)=p^=0.74standard…

Q: How many repair records should be sampled if GM wants the population mean number of miles driven…

A: 1. The critical value of t-distribution at 59 degrees of freedom can be obtained using the excel…

Q: Suppose that you wish to find a population proportion p with accuracy ±2% with 99% confidence. What…

A:

Q: You are conducting a study to see if the proportion of voters who prefer Candidate A is…

A: Denote p as the true proportion of the voters who prefer candidate A.

Q: en the current Center of Disease Analytics statistics, the probability of having the flu in our area…

A: event A= having flup(having the flu in our area)=0.10p(A)=0.10P(A')=1-0.10=0.90event B=report…

Q: According to the American Cancer Society, in 2016 10.7% of the U.S. working population commute to…

A: From the provided information, In 2016, 10.7% of the U.S. working population commute to work by…

Q: A newspaper infographic titled "Have a Nice Trip" summarized data from a survey of 1,000 U.S. adults…

A: The objective of the question is to estimate the population proportion of U.S. adults who have…

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 rare birth defect occurs in approximately 0.5% of all cases in males. If we sample all the males…

A: Given information: The total number of males born in 2016 in a specific region is N = 200,000. It is…

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A: Margin of error(E), E=z×p×qn From the above E, find n, n=zE2×p×q Here, E=0.04 There is no…

Q: About 70​% of all female heart transplant patients will survive for at least 3 years. Sixty female…

A: Given n=60 Population proportion=0.70 p=0.66

Q: The volumnes of soda in quart soda bottles can be described by a normal model with a mu of 32.3 oz…

A:

Q: The average number of pounds of red meat a person consumes each year is 196 with a standard…

A: We are given,μ = 196σ = 22n = 60

Q: About 73​% of all female heart transplant patients will survive for at least 3 years. Ninety female…

A:

Q: A research study examined the effects of a new drug versus an old drug on hypertension. There were…

A: The objective of this question is to determine if there is a significant difference in the…

Q: The Congressional Budget Office reports that 36% of federal civilian employees have a bachelor's…

A: Given : Mean = μ = 0.36  Level of significance = 0.05 p^ = xn    = 31118    = 0.2627

Q: study found that 1.21% of Social Security recipients are too young to vote. If 800 Social Security…

A: Given that  A study found that 1.21% of Social Security recipients are too young to vote. P = 0.0121…

Q: You would like to estimate the proportion of all residents in favor of a new law with 98%…

A: The sample proportion is 0.30, margin of error is 0.06, and the confidence level is 98%. Computation…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A:

Q: (Round to four decimal places as needed.) (e) Using the distribution from part (c), would it be…

A:

Q: Using EXCEL, develop a 95% confidence Interval estimate for the Mean number of miles driven until…

A: 1. The 95% confidence interval is obtained by using the EXCEL(PHStat). The software procedure is…

Q: A stock analyst wondered whether the mean rate of return of financial, energy, and utility stocks…

A: Given the mean rate of return of financial, energy and utility stocks as   Financial  Energy…

Q: In a poisson distributed character, the mean number of events is 6. Find the variance.

A:

Q: Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years…

A: p = 0.5 Margin of error = 0.01

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

A:

Q: Find the sample size required to estimate the percentage of statistics students who take their…

A:

Q: A Chinese cell-phone manufacturer exclusively uses robots in one of its factories. A random test run…

A:

Q: About 75% of all female heart transplant patients will survive for at least 3 years. Sixty female…

A:

Q: On Mary’s FACEBOOK page, there is a 42% chance that one of her friends will write on her wall. If…

A: Given : p = 0.42 n = 2400

Q: You want to obtain a sample to estimate the proportion of a population that possess a particular…

A: The confidence level is 98% and the margin of error is 5%.

Q: The percent of the population that is left-handed has historically been 10%. In a random sample of…

A: Solution: State the hypotheses Null hypothesis: That is, the per cent of the population that is…

Q: Find the probability that more than 60 enrolled college

A: Let p be the probability that a student who graduated from high school in a recent year enrolled in…

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.