A marketing analyst wants to predict the proportion of mortages in the Oxford area that are distressed, meaning that borrowers are more than 3 months behind on payments. The analyst wants an estimate with a 95% level of confidence and an error of at most 6%?   Step 1 of 2 :   Assuming the analyst has no prior knowledge about the proportion, how large of a sample would be required for the analyst to make the desired estimate? Round your answer up to the next integer.

Q: There are 5000 observations in a data set. 10% of the data are “1”s, while the rest are “0”s. If we…

A: The data set consist of 5000 observations. The observations are 0's and 1's. An amount of data…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Provided data is, it is believed the population proportion is p = 31%, estimate is within 2% of the…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Proportion is almost similar to the concept of probability. Proportion is a fraction of population…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: From provided information; Margin of error M.E = 4.5% that is 0.045 Confidence level= 90% The z…

Q: how large of a sample would be required for the commissioner to make the desired estimate?

A: The state education commission wants to estimate the proportion of tenth-grade students in the state…

Q: 7.2 t-distribution. The figure on the right shows three unimodal and symmetric curves: the standard…

A: Given: 3 unimodal and symmetric curves : Standard normal z distribution, t-distribution with 5 df,…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

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Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

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Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

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Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: It is given that margin of error (E) is 0.02 and the confidence level is 0.95.

Q: If the results of a two-factor experiment are presented in a line graph, then what pattern appears…

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Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Find z-critical value: Refer Standard normal table/Z-table OR use excel function…

Q: The correct answer to this problem is 0.15 or 15%. Where did I go wrong in my calculation? Would you…

A: GivenP(red) = 0.25P(red and bad) = 0.10 The method what you did is incorrect as it probability of…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

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Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Answer:-  Given, P=0.76 q=1-p=1-0.76=0.24 Confidence level=99% Critical Z value =2.5758 Margin of…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given: The margin of error E=0.05 Confidence level = 90% Since the population proportion is not…

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: Given: Population proportion (p) = 0.69 Confidence level = 96% = 0.96 Margin of error (E) = 3% =…

Q: You want to estimate the percentage of small incorporated businesses that are owned by women. A…

A: The random variable percentage of small incorporated businesses follows binomial distribution. The…

Q: A data set with roughly a bell-shaped distribution has mean 45 and standard deviation 12.…

A: The percentage of the observations lie between 33 and 57 is obtained below:Let X be an observation…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A:

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A:

Q: You want to obtain a sample to esimate a population proportion. At this point in time you have no…

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Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: sample size n=?

Q: The state education commission wants to estimate the proportion of tenth-grade students in the state…

A: Confidence level=99%Margin of error(E)=5%=0.05Assuming the commissioner has no prior knowledge about…

Q: What important feature is missing in the following scenario?

A: Given: The confidence interval for proportion is, (17.8% , 22.4%) The sample size = n = 1028

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Obtain the sample size of a no preliminary estimate for p. The formula of sample size is, Use EXCEL…

Q: If you want to be 99% confident of estimating the population proportion to within a sampling error…

A: Answer:- Given, Confidence level, C = 99% = 0.99Error, E = 0.06Population proportion, p = 0.43 Using…

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: Given information Error = 2% = 0.02 Assuming Population proportion p = 0.5 Confidence level = 0.95

Q: You want to obtain a sample to estimate a population proportion. At this point in time, you have no…

A: It is given that margin of error (E) is 0.02 and the confidence level is 80%.

Q: You want to obtain a sample to estimate a population proportion. Based on previous evidence, you…

A: