1. A sample of 144 incoming freshman found that 45 of them scored more than 550...
1. A sample of 144 incoming freshman found that 45 of them scored more than 550 on the math SAT. Construct a 99% confidence interval for the proportion of all incoming freshmen who scored more than 550 on the math SAT.
2. A sample of 300 voters was polled and asked whether they are satisfied with the choice of candidates for President. 162 said they were not satisfied. Construct a 98% confidence interval for the proportion of all voters who are not satisfied with the choice of candidates for President.
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1. A sample of 144 incoming freshman found that 45 of them
scored more than 550...
A simple random sample of 300 voters was polled several months before a presidential election. One...
A simple random sample of 300 voters was polled several months before a presidential election. One of the questions asked was: "Are you satisfied with the choice of candidates for president?" A total of 123 of them said that they were not satisfied. a. What function would you use to create a confident interval for the proportion of voters who are not satisfied with the choice of candidates? b. Create a 99% confident interval for the proportion of voters who...
(COMPUTE AND INTERPRET CONFIDENCE INTERVAL ESTIMATES) A college admissions officer sampled 120 entering freshmen and fou...
(COMPUTE AND INTERPRET CONFIDENCE INTERVAL ESTIMATES) A college admissions officer sampled 120 entering freshmen and found that 42 of them scored more than 550 on the math SAT. Construct a 99% confidence interval for the proportion of all entering freshmen at this college who scored more than 550 on the math SAT. Find the critical values, find E , the margin of error, then compute and interpret your interval estimate with a full sentence. Critical value: (draw, label & shade)...
in a simple random sample of 190 households, the sample mean number of personal computers was...
in a simple random sample of 190 households, the sample mean number of personal computers was 2.78. assume the population standard deviation is 0.41. a) a 99.8% confidence interval for the mean number of personal computers is ----< mean <----- 2) a simple random sample of eight college freshman were asked about how many hours of sleep they typically got per night. the results were 7.5, 8, 6.5, 24, 8.5, 6.5, 7, 7.5 a) the data contains an outlier that...
5) In a recent presidential election, 500 voters were surveyed and 350 of them said that...
5) In a recent presidential election, 500 voters were surveyed and 350 of them said that they voted for the candidate who won. a. Construct a 96% confidence interval estimate of the percentage of voters who said they voted for the candidate who won. b. How many voters must they survey if they want 90% confidence that the sample proportion is in error by no more than 0.02?
4. Do seniors use Instagram more than freshman?In a random sample of 485Pa. high school seniors,320...
4. Do seniors use Instagram more than freshman?In a random sample of 485Pa. high school seniors,320 reported that they use Instagram. Out of a random sample of395 Pa. high school freshman 234reported that they use Instagram. a. Does this show convincing evidence at the .01 level that the proportionof high school seniors who use Instagram is more than high school freshman? b. What would your conclusion be if ?=0.05 c. The confidence interval isreported as (−.0089,.14363). Explain how this supports...
1. Use the given degree of confidence and sample data to construct a confidence interval for...
1. Use the given degree of confidence and sample data to construct a confidence interval for the point) population proportion p. A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all voters in the state who favor approval. 0 0.438<p0.505 0 0.444 p0.500 0 0.435<p<0.508 O 0.471 p0.472 2. Use the given data to find the minimum sample size required...
o A random sample of 1015 adults in a certain large country was asked "Do you...
o A random sample of 1015 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without of the 1015 adults surveyed, 512 indicated that televisions are a luxury they could do without Complete parts (a) through (0) below. Growth andardroge Click to view the standard normal distriton tablete (a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions...
A random sample of 1028 adults in a certain large country was asked "Do you pretty...
A random sample of 1028 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1028 adults surveyed, 527 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Obtain a point estimate for the...
A random sample of 1012 ts in a certain large country was asked "Do you pretty...
A random sample of 1012 ts in a certain large country was asked "Do you pretty much think belevisions are a necessity or a luxury you could do without of the 1012 adults surveyed, 537 indicated that televisions are a luxury they could do without Complete parts (a) through to below. Click here to view the standard roma darbo. 1 Cack here to the standardnomalditional Ajotain a pont estimate for the population proportion of buits in the country who ever...
A random sample of 1002 adults in a certain large country was asked "Do you pretty much think te...
A random sample of 1002 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1002 adults surveyed, 516 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). LOADING... Click here to view the standard normal distribution table (page 2). LOADING... (a) Obtain a point estimate...
A simple random sample of 300 voters was polled several months before a presidential election. One of the questions asked was: "Are you satisfied with the choice of candidates for president?" A total of 123 of them said that they were not satisfied. a. What function would you use to create a confident interval for the proportion of voters who are not satisfied with the choice of candidates? b. Create a 99% confident interval for the proportion of voters who...
1. Use the given degree of confidence and sample data to construct a confidence interval for the point) population proportion p. A survey of 865 voters in one state reveals that 408 favor approval of an issue before the legislature. Construct the 95% confidence interval for the true proportion of all voters in the state who favor approval. 0 0.438<p0.505 0 0.444 p0.500 0 0.435<p<0.508 O 0.471 p0.472 2. Use the given data to find the minimum sample size required...
o A random sample of 1015 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without of the 1015 adults surveyed, 512 indicated that televisions are a luxury they could do without Complete parts (a) through (0) below. Growth andardroge Click to view the standard normal distriton tablete (a) Obtain a point estimate for the population proportion of adults in the country who believe that televisions...
A random sample of 1028 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1028 adults surveyed, 527 indicated that televisions are a luxury they could do without. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) Obtain a point estimate for the...
A random sample of 1012 ts in a certain large country was asked "Do you pretty much think belevisions are a necessity or a luxury you could do without of the 1012 adults surveyed, 537 indicated that televisions are a luxury they could do without Complete parts (a) through to below. Click here to view the standard roma darbo. 1 Cack here to the standardnomalditional Ajotain a pont estimate for the population proportion of buits in the country who ever...
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