Over the years 72 percent of females and 67 percent of males pass math and science classes as students. We would like to understand if females pass math science more readily. We took a sample of 190 females and 370 male students from the country at random. Do females pass math and science more readily? (Assume significance level of level. -Calculate the standard error for the above context -Calculate the 99% confidence interval for the difference in the true proportion of male and female students who pass math and science. Interpret the confidence interval and determine if there is a significant difference between the two groups.

Q: Identify the t -scores for a 90% confidence interval if the sample size is 25?

A: Givensample size(z)=25α=1-0.90=0.10α2=0.05

Q: If a 92% Confidence Interval for the Population Mean is (67.8, 78.9), find its Margin of Error.

A:

Q: A biologist is studying fish diversity Lake Erie. The biologist knows that Black Carp are an…

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Q: Suppose a different police department says their SRS resulted in a 95% confidence interval of 10.1%…

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Q: Can you please calculate the 95% confidence interval for this problem

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Q: What confidence interval will have the larger margin of error when using the same sample data and…

A: Since we know that, Confidence interval = the estimate ± the margin of error Margin of error is…

Q: How does the 90% confidence interval compare to the 95 % interval?

A: Given data : How does the 90% confidence interval compare to the 95 % interval?

Q: Suppose we take a survey of 200 students and ask how much they study per week. The result is an…

A: From the above data  We are given that the  95% confidence interval is (10, 10.5). The population…

Q: suppose an individual was studying temperature's effect on crime rate. The researcher looked at 6…

A: Solution:The sample mean is obtained below:From the given information, number of observations is 6…

Q: Find the 95% confidence interval for the difference in the two population means X1 = 12, s1 = 2.2,…

A: The sample mean of group 1 is The sample standard deviation of group 1 is The sample size of group 1…

Q: If n= 208 and hatp = 0.46, construct a 95% confidence interval Round your answer to the three…

A: Answer: From the given data, Sample size (n) = 208 p^ = 0.46 95% confidence interval, significance…

Q: A college admissions officer sampled 119 entering freshmen and found that 50 of them scored less…

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Q: What is the impact on the confidence interval estimate if a larger sample is used?

A: Confidence interval:

Q: What is the t-value for a 95% confidence interval given that the sample size is 16? Write the exact…

A: Given: confidence level =95%  Sample size n=16  Then degree of freedom for t-test is =n-1  To find…

Q: How does the sample size and percentage of confidence influence the width of a confidence interval?

A: We have to define effect on width of C.I.

Q: Race and Smoking 2013 Data collected in 2013 by the behavioral Risk Factor surveillance System…

A: From the given information: p⏞1=0.147p⏞2=0.188n1=112n2=1916c=90%=0.90

Q: 90% confidence interval is narrower than a 95% confidence interval using the exact same data.…

A: Conditions on confidence interval:   As the confidence level increases, width of the confidence…

Q: What formulas are used to find the confidence interval? Researchers comparing the effectiveness of…

A: According to the given information in this questionWe need to construct 95% confidence interval

Q: Construct a 95% confidence interval estimate. How does this change your answer to (b)?

A: (d)

Q: In what are we confident after we’ve calculated a 95% confidence interval – the value of that…

A: still wrong. The 95% is not for the construction of the interval, but for the method of constructing…

Q: It is believed that slightly over 50% of Americans own pets. A 95% confidence interval for the…

A: Confidence Interval: The form of the confidence interval is, CI = Point estimate ± Margin of error…

Q: According to a report on consumer fraud and identity theft, California had 1439 complaints of…

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Q: What is the relationship between α and the confidence level of a hypothesis test?

A: In hypothesis testing, α is the level of significance, which provides details about the chance of…

Q: A recent poll indicated that 42% of men supported raises taxes to fund additional park services.…

A: given data men: p^1 = 0.42     n1 = 21women : p^2 = 0.64    n2 = 1999% ci for p1-p2.

Q: What are two ways to get a narrower confidence interval for a proportion?

A: Two ways to get a narrower confidence interval for a proportion are:

Q: Why is a 99% confidence interval wider than a 95% confidence interval?

A: The confidence interval formula is sample statistic±Margin of error. The margin of error is the…

Q: 5. At Community Hospital, the burn center is experimenting with a new plasma compress treatment. A…

A: It is given that  For sample 1: Favourable cases, X1 = 259 Sample size, n1 = 316 For sample 2:…

Q: A statistics instructor was interested in the proportion of all Kent State students who live on…

A: The proportion that students at Kent State live on campus is obtained below:From the given…

Q: A recent poll indicated that 42% of men supported raises taxes to fund additional park services.…

A: The question is about confidence interval Given : Sample prop. of men supported raises taxes to fund…

Q: If a 90% , a 95% and a 99 % confidence interval are found for a population ean, describe how the 3…

A: Solution :  A 90%, a 95% and a 99 % confidence interval are found for a population mean.

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A: The 100 (1 – α)% confidence interval provides an interval estimation of the required population…

Q: How can we interpret a 95% confidence interval?

A: How to interpret a 95% confidence Interval?  We know that,  Confidence Interval is defined as the…

Q: Suppose we know that a confidence interval for a population proportion is (0.572, 0.662), with a…

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Q: We plan to sample parents in order to construct a 99% confidence interval for the proportion who…

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Q: A survey commissioned by the Southern Cross Healthcare Group reported that 16% of New Zealanders…

A: 1.Suppose p is the true population proportion of people, who consume five or more servings of drinks…

Q: According to a Field Poll, 254 out of 409 of California adults feel that "education and our schools"…

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Q: A psychologist asked a random sample to complete a depression questionnaire. On average, children…

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Q: What would answer be at 99% confidence interval?

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Q: A psychologist asked a random sample to complete a depression questionnaire. On average, children…

A: We assume the population is normally distributed.

Q: An insurance company collects data on​ seat-belt use among drivers in a country. Of 1200drivers…

A:

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.