In a random and independent sample of 1000 students 80% of them were in favor of longer hours at the school library. What is the margin or error (MOE) for the 95% confidence interval level?

Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…

A: Given The data is as follows: 5, 7, 2, 8, 5, 5, 6, 9, 7, 9, 4, 9 CL=0.99

Q: A random sample of 25 statistics students was asked: "Have you smoked a cigarette in the past week?"…

A: From the provided information, Sample size (n) = 25 Six students reported smoking within the past…

Q: Why does increasing the confidence level result in a larger margin of error?

A: We know that the Margin of error is directly proportional to the test statistic's critical value,…

Q: Suppose that a random sample of 142 graduate-admissions personnel was asked what role scores on…

A: Given : Random sample of 142 graduate-admissions personnel Sample size (n)=142 Let X : No. of…

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A:

Q: i need help with the upper 95% confidence interval of the difference

A: We have given the sample mean of difference of scores   X̅=-1.60  with standard deviations  s=1.1402…

Q: In a clinical trial, 50 patients who received a new medication are randomly selected. It was found…

A: Solution: Let X be the number of patients suffered serious side effects from this new medication and…

Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. in the…

A: Given information: Number of babies that were born n=340 Number of girls that were born X=289…

Q: A nutritionist believes that obesity is more prevalent among American adults than it was in the…

A: Hence we are given that; x1=380, n1=1630x2=726, n2=2350 Hence the sample proportions are;…

Q: QUESTION 4 In a random and independent sample of 4000 students 35% of them were in favor of more…

A: MOE=Zα/2p(1-p)n Zαl2=1.645 p=0.35 and n=4000

Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…

A: The given data set is, 7,7,3,10,7,5,8,9,7,9,3,9 Here, we have to construct and interpret a 99%…

Q: For a random sample of 48  professional soccer games, the variance of total points was 7.3 points.…

A: Sample size, Sample variance,  points. Confidence level,

Q: Suppose we observed 15 successes in a random sample of 60 subjects. What is the 99% confidence…

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

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Q: Suppose an individual was studying temperature’s effect on the crime rate. The researcher looked at…

A: Note: Based on the computations using the technology, the calculations given here is correct.

Q: tis A poll found that people from the north now have relatively warm feelings toward people from the…

A:

Q: In a study of speed​ dating, male subjects were asked to rate the attractiveness of their female​…

A: This question requires accurate results, Hence I will rise Excel to solve this question.…

Q: search for the Ford Motor Company, you find that a random sample of 800 households includes 721 in…

A: At 98% confidence level, the z value is 2.33 which can be obtained by using the standard normal…

Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…

A: The question is about confidence intervalGiven :To find :1 ) 90 % CI for the popl. mean2 ) What does…

Q: In a survey of 1007 parents of children ages 8 to 14, 75% say they are willing to get a second job…

A: Given information- A proportion of parents say they are willing to get a second job or part-time…

Q: A clinical trial tests a method designed to increase the probability of conceiving a girl. In the…

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Q: ted below are student evaluation ratings of courses, where a rating of 5 is for "excellent." The…

A: The given data is  4 2.9 4 4.8 3 4.2 3.8 4.4 4.2 4 4.3 3.9 3.5 4.1…

Q: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…

A: Obtain the 99% confidence interval for the population mean. The 99% confidence interval for the…

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: In a study of speed dating, male subjects were asked to rate the attractiveness of their female…

A: Find the distribution that has to be used to construct the confidence interval in the given…

Q: An opinion poll was conducted to examine people's satisfaction with the work of civil defense during…

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Q: 90% confidence interval for the mean of airline reservations being canceled on the day of the flight…

A: Given 90% confidence interval is (2.68,9.42)   Lower limit=2.68 Upper limit=9.42 Point estimate p=?

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: Several years ago, 33% of parents who had children in grades K-12 were satisfied with the quality of…

A: According to the given information in this question, we need to identify null and alternative…

Q: QUESTION 5 In a random and independent sample of 4000 students 35% of them were in favor of more…

A: (1-α)% CI for P is   p^-Zα/2p^(1-p^)n⩽p⩽ p^+Zα/2p^(1-p^)n p^=0.35, n=4000, Zα/2=1.96 at α=0.05

Q: In a sample of 95 recommendations, it is found that 56% of them made money. Determine the upper…

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

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.