A student reads that a re- cent poll finds that a 95% confidence interval for the mean ideal weight given by adult American women is 139 (plus or minus)1.4 pounds. Asked to explain the meaning of this interval, the student says, "95% of all adult American women would say that their ideal weight is between 137.6 and 140.4 pounds." Is the student right? Explain your answer   I think it is correct but I might be missing something. Thanks!

Q: According to a poll, 81% of California adults (409 out of 506 surveyed) feel that education is one…

A: Point estimate=0.81

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

A:

Q: What is the purpose of the confidence intervals in Statistics?

A: Confidence interval is derived from the Sample stastics for the estimatation of population…

Q: A union of restaurant and foodservice workers would like to estimate this year's mean hourly wage u…

A: Statistical hypothesis testing is an important method in inferential statistics. It is used to test…

Q: In 2016 the CDC wanted to estimate the proportion of adults who are smokers in the U.S. The…

A:

Q: A Pew Internet Project Data Memo presented data comparing adult gamers with teen gamers with respect…

A: Given : p̂1 = 0.54 p̂12 = 0.89 n1 = 1063 n2 = 1064

Q: A survey conducted on a certain website indicated that 52.9% of the people visiting this website…

A:

Q: Students at a certain college were asked if they have a car. After surveying 823 students, it was…

A: We know that a margin of error tells us how many percentage points our results will differ from the…

Q: (b) Estimate the sample size needed if no estimate of p is available. A sample of elementary school…

A: From the provided information, Confidence level = 95% Margin of error = 0.06

Q: Refer to the accompanying data display that results from a sample of airport data speeds in Mbps.…

A: Given: 95% confidence interval = (13.046, 22.15)

Q: In a survey,  20 people were asked how much they spent on their child's last birthday gift.  The…

A: Solution: Given information: n= 20 Sample size  x= $38 Sample mean s= $7 Sample standard deviation

Q: In a survey of 1250 U.S. adults, 363 said that their favorite sport to watch is football. The 95%…

A:

Q: Imagine that you conducted a study in order to calculate mean resting heart rate among patients at a…

A:

Q: A survey of 1,000 adults showed 58% believed the driving age should be changed from 16 years of age…

A: Provided information: Number of adults in a survey = 1000 58% believed the driving age should be…

Q: The winning   score in 5 high school basketball games was recorded. If the sample mean is 62.3…

A: Given information- Sample size, n = 5 Mean, x-bar = 62.3 Sample standard deviation, s = 11.0 Since…

Q: What is the correct conclusion? O A. Since the interval contains the proportion stated in the null…

A: The correct conclusion is: If confidence interval contains value of parameter in null hypothesis…

Q: find a 99% confidence interval for the proportion of us adults favoring taxes on soda and junk food.…

A:

Q: Believe it or not, there are some people who dont think that Duke will win the NCAA tournament this…

A: Obtain the 90% Confidence Interval for the IQ of DDs.   The 90% Confidence Interval for the IQ of…

Q: If the margin of error in an estimate for the mean weight of a shipment is + or -2 pounds at a…

A: From the provided information, The margin of error at a confidence level of 95 percent = ±2 The…

Q: A random sample of 121 students from Clayton State was selected to estimate the average ACT score of…

A:

Q: researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 520…

A:

Q: In statistics, what is a Confidence Interval and how confidence intervals are used in research

A: We have define the confidence interval . Also we have find the its use in the research

Q: You are told that a survey produced a 90% confidence interval for the mean spent on utilities per…

A:

Q: A magazine article conducted a survey of 1000 people in Washington State and found that 26% of the…

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Q: To devise effective marketing strategies it is helpful to know the characteristics of your…

A: Givensample size(n)=932x=543p^ =xn=543932=0.5826Confidence level(c)=95%α=1-0.95=0.05α2=0.025critical…

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: A department chair wanted to know whose students performed better on a common pass/fail final exam:…

A: p1 :  proportion of students passed in smith's  class p2 :  proportion of students passed in Jones's…

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: We have given that Mean(µ) = 140 Sample mean (x̅) = 134 Standard deviations (s) = 28

Q: Now look at the variable DIFFERENCE in the data file “Fuel Efficiency.” If there is no difference…

A: Fill-Up No. Computer Driver Difference   1 41.5 36.5 5   2 50.7 44.2 6.5   3 36.6 37.2 -0.6…

Q: Heather runs a successful lawn-mowing business. She would like to estimate the true mean amount of…

A: Given that  Sample size n =30 90 % confidence interval is (40 , 55)

Q: Believe it or not, there are some people who don't think that Duke will win the NCAA tournament this…

A: Solution

Q: A study at Harvard found that 44% of their students binge drink. You are at Princeton doing a…

A:

Q: This was a question on my homework and I would like to know if I answered it correctly. Thank you…

A: Odds (O):The “odds” of the occurrence of an event is the ratio of the number of occurrences of the…

Q: Believe it or not there are some people who don't think that duke will win the NCAA tournament this…

A: It is given that the sample size is n=28. The sample mean is x¯=90. The sample standard deviation is…

Q: A survey of 100 men found that 68% said they find it hard to buy holiday gifts that convey their…

A: Solution