A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than examine the records for all students, the dean randomly selects 152 students and finds that 101 of them are receiving financial aid. Use a 95% confidence interval to estimate the true proportion of students who receive financial aid.  Write the LOWER BOUND for the confidence interval.  Round to

Q: Use the given confidence interval to find the margin of error and the sample mean. .734, .760

A: From the given information, the confidence interval is (0.734, 0.760). It can be expressed in,

Q: In a recent poll, 410 people were asked if they liked dogs, and 85% said they did. Find the margin…

A: Given that, p^=0.85n=410 Critical value: By using the z-tables, the critical value at 1% level of…

Q: When 460 junior college students were surveyed, 100 said they have a passport. Construct a 95%…

A: Given that there are 460 junior college students and 100 said they have a passport. That is, n=460…

Q: In a recent poll, 260 people were asked if they liked dogs, and 9% said they did. Find the margin of…

A:

Q: Calculate a 95% confidence interval on the mean rating for each hospital. Plot the intervals and…

A: Given Information :  Hospital comparison data . A healthcare consultant wants to compare the patient…

Q: Sixty-five percent of the human population has some form of lactose intolerance. As part of your…

A: We want to find the 90% confidence interval

Q: Belief in Haunted Places A random sample of 280 college students were asked if they believed that…

A: Answer below

Q: those polled answered the economy. Construct a 93% confidence interval for the proportion of voters…

A: It is given that, the sample size, i..e, the sampled no. of voters, .The no. of voters, who answered…

Q: 9s

A: Margin of error =E =5%=0.05 90% confidence level

Q: n your random sample of home prices. To insert a tion" or simply copy and edit the equation in the…

A: Formula : The confidence interval formula is CI =

Q: 1. How is the expected length of a confidence interval related to the margin of error?

A: here use basic of confidence interval

Q: You're considering going to graduate school, and you would like to know how many people would…

A: From the provided information Sample size (n) = 29, People who recommend x = 9 The sample proportion…

Q: Find the margin of error and confidence interval for the percentage of U.S. adults who regularly use…

A:

Q: e presidential election process reports many polls. You survey 40 college students and find that 70%…

A: Given data, n=40 p=70%=0.70 Find the 95% confidence interval to estimate the population proportion…

Q: A new fertilizer was applied to the soil of 199 bean plants. 48% showed increased growth. Find the…

A: Margin of error for proportion is given by, MOE= z*√pq/n Where P Is proportion and Q= 1-P n is…

Q: Compute a 98% confidence interval for the true percent of students who are against the new…

A: Given: n=521 Confidence level=98%

Q: A survey of 26 individuals found that they spent an average of $39.21 on exercise attire for the…

A: Confidence interval is an inference process which is used to estimate the population parameter. The…

Q: Use the sample data and confidence level given below to complete parts  (b)   A research institute…

A: Margin of error can be calculated as shown below.

Q: In a recent poll, 130 people were asked if they liked dogs, and 24% said they did. Find the margin…

A: Given, Total number of people = 130 Probability that a person likes a dog = 0.24 z value at 99%…

Q: Emilio wants to estimate the percentage of people who have a financial adviser. He surveys 350…

A: given data  n = 350 x = 76 we have to interprete 99% confidence intervl.

Q: A poll of 2929 U.S. adults found that 85% regularly used Facebook as a news source. Find the…

A:

Q: Form 90%, 95%, and 99% confidence intervals for the proportion of voters who favor the candidate.…

A: Given that Sample size n = 1000 Number of respondents favor the candidate, X = 214 The critical…

Q: A new fertilizer was applied to the soil of 222 bean plants. 28% showed increased growth. Find the…

A: Given Information: Sample Size, n =222Sample Proportion, p^=28% =0.28 To find out the margin of…

Q: A poll of 2657 U.S. adults found that 86% regularly used Facebook as a news source. Find the margin…

A: Given that, n = 2657 Point estimate = sample proportion =  = 0.86 1 -  = 1 - 0.86 = 0.14

Q: A student polls his school to see if students in the school district are for or against the new…

A: From the provided information, Sample size (n) = 395 Out of which 210 are against the new…

Q: A poll of 2977 U.S. adults found that 28% regularly used Facebook as a news source. Find the margin…

A: Solution: Given information: n = 2977 Sample size  p^= 0.28  Sample proportion.

Q: How

A: solution :  [ option B is correct 1068 ] given data Margin of Error E=0.03 Significance Level alpha…

Q: According to a survey of 100 men and 900 women, 21% of men and 28% of women read for fun almost…

A:

Q: A new fertilizer was applied to the soil of 222 bean plants. 28% showed increased growth. Find the…

A:

Q: 4. A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the…

A:

Q: roportion of US adults who say they never exercise. Round your answers to three decimal places.…

A: Given that  n=1000 , p=20%=0.20

Q: You and a friend are interested in knowing if two groups have the same proportion of smokers. The…

A: Solution : Given : n1 = nn2 =500             x1 = 490             x2 = 400              α = 0.05…

Q: Determine whether the statement below makes sense or does not make sense. Explain clearly.

A: Here given , Based on our sample, the 95% confidence interval for the mean amount of television…

Q: In a recent poll, 530 people were asked if they liked dogs, and 95% said they did. Find the margin…

A: Given, n=530 p=0.95 Confidence level = 0.95 Critical value for 95% confidence level is 1.96.

Q: A poll of 1021 U.S. adults found that 46% regularly used Facebook as a news source. Find the…

A: Given, n = 1021 p^=0.46 q^ = 1 - p^ = 1 - 0.46 = 0.54 α=0.1

Q: A new fertilizer was applied to the soil of 123 bean plants. 85% showed increased growth. Find the…

A: Find z-critical value: For the two-tail test, Area on each tail. Area to the left of the normal…

Q: Some students think that a 90% confidence interval contains 90% of the data. Use the list of data on…

A: As it is calculated that,  90% confidence interval for mean is,  (295753.6,464478.4)

Q: Translate the statement into a confidence interval. Approximate the level of confidence. In a survey…

A: as per our company guidelines we are supposed to answer only first question. Kindly repost other…

Q: In a recent poll, 170 people were asked if they liked dogs, and 76% said they did. Find the margin…

A: Sample size n =170 Sample proportion p^=0.76

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.