A student was asked to find a 90% confidence interval for the proportion of students who take notes using data from a random sample of size n = 81. Which of the following is a correct interpretation of the interval 0.15 < p < 0.22?

Q: A sample of 28 was taken from a population, and r = .45. What is the 95% confidence interval for the…

A: Correlation coefficient: Correlation analysis is used to measure strength of the association between…

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: The data were collected in the men's 100-meter run of 16 secondary school students, and the mean…

A: Introduction: The 100 (1 – α) % confidence interval for the population mean, μ, when the population…

Q: A certain study sampled 1283 adults about drinking coffee. The study showed that 824 of the adults…

A: Givensample size(n)=1283x=824confidence level=95%

Q: sample of 352 subscribers to Wired magazine shows the mean time spent using the Internet is 18.4…

A: Given data,n=352x=18.4s=6.8α=0.05df=n-1=351t-critical value is tc=1.967

Q: A random sample of 100 Colorado residents is selected, and it is found that 82% of them have Subaru.…

A:

Q: A sample of 200 found that 43.2% of those sampled consumed more than 2 alcoholic  beverages  a week.…

A: Given:

Q: You surveyed business travelers to develop quality ratings for an airport. The maximum possible…

A: Given,sample size(n)=25sample mean(x¯)=6.34sample standard deviation(s)=2.16degrees of…

Q: A sample of 200 corporate managers produced the mean job-related stress score of 7.9 with a standard…

A: It is given that,

Q: For a single sample of n = 16 scores, the tabled t values used to determine the 99 percent…

A: Given: n = 16 Confidence Interval = 99% α=1-0.99=0.01α2=0.012=0.005 Degrees of freedom:…

Q: A report said that the average blood pressure is  130.71  for a sample of  37  white males aged  35…

A:

Q: In a random sample of 500 people eating lunchbat a cafeteria on various fridays, it was found that…

A: Given X=160 n=500 P=X/n

Q: The mayor is interested in finding a 95% confidence interval for the mean number of pounds of trash…

A:

Q: A surprising number of young adults (ages 19 to 25) still live in their parents’ homes. A random…

A: Given  X1=986, n1=2253, X2=923, n2=2629

Q: In a random sample about advertising preferences, 17 out of 40 individuals said they preferred print…

A: Given,      Sample size n=40      and X=17      by using plus 4 method,      New sample size…

Q: A 95% confidence interval for the mean was computed with a sample of size 90 to be (16,22). a. What…

A:

Q: A study was done to determine whether there is a relationship between snoring and the risk of heart…

A: Confidence interval:The (1-α)100 % confidence interval for proportion p1 – p2 is given by,

Q: In a Pew Research poll, 287 out of 522 randomly selected U.S. men were able to identify Egypt when…

A: Given that,287 out of 522 randomly selected U.S. men were able to identify Egypt.Whereas, 233 out of…

Q: A random sample of n1 = 229 people who live in a city were selected and 105 identified as a "dog…

A:

Q: A sample of 15 found that 43.2% of those sampled consumed more than 2 alcoholic  beverages  a week.…

A:

Q: In a survey, 1000 adults in a certain country were asked how many hours they worked in the previous…

A: Confidence interval used to obtain the range where the population true mean lies. It explain the…

Q: dentify the t-score for a 95% confidence interval if the sample size is 50. t

A: Given data, Sample size n=50 confidence interval =95% =0.95 Compute t-score?

Q: Suppose a sample of 30 LCC students are given an IQ test. The sample has a standard deviation of…

A: Given the following information- n=30s=12.24s2=149.82

Q: A fitness center is interested in finding a 98% confidence interval for the mean number of days per…

A:

Q: A random sample of high school students is used to estimate the mean time all high school students…

A: Solution: From the given information, a 99% confidence interval is 1.7 hours to 3.1 hours.

Q: A random sample of 64 business students required an average of 50.7 minutes to complete a statistics…

A: Margin of Error E = z(alpha/2) * s / sqrt(n)Lower Bound = X - z(alpha/2) * s / sqrt(n)Upper Bound =…

Q: A random sample of n₁ = 276 people who live in a city were selected and 112 identified as a "dog…

A: given data n1 = 276  x1 = 112p^1 = x1n1 = 112276 = 0.4058       n2 = 117  x2 = 70p^2 = x2n2 = 70117…

Q: A random sample of 25 business students required an average of 50.7 minutes to complete a statistics…

A: Given that, Mean = 50.7 Standard deviation = 10.4 Sample size = 25

Q: A random sample of 125 adult females was selected as part of a study on weight loss. The average…

A: Given: n=125, x=212 pounds, σ=18, α=1-0.95=0.05

Q: atn] Eight squirrels were found to have an average weight of 9.7 ounces with a sample standard…

A: The provided sample mean is Xˉ=9.7\bar X = 9.7 and the sample standard deviation is s=0.2s = 0.2.…

Q: A random sample of n₁ = 213 people who live in a city were selected and 91 identified as a "dog…

A: n1=213x1=91n2=120x2=67α=1-0.90=0.10

Q: If you construct a 90% confidence interval of the mean amount of money a student receives just from…

A: Given 90% confidence interval of the mean amount of money a student receives just from financial aid…

Q: Samples of two different models of cars were selected, and the actual speed for each car was…

A:

Q: company manufactures a certain over-the-counter drug. The company samples 80 pills and finds that…

A: We have given that  Sample size n = 80 Sample mean = 325.5 Standard deviation s=10.3 90%confidence…

Q: Find the value of ta/2 and n = 25 for the 90% confidence interval for the mean if the population…

A:

Q: number

A: Given: Mean, x=3.5 Sample standard deviation, s=1.6 Sample size, n = 219 To compute the confidence…

Q: Does this interval give the quality control inspector reason to believe that the mean amount of…

A: The 95% confidence interval for the true mean amount of juice dispensed per bottle is (296.4,…

Q: The bonus of the staff of the company is under the normal distribution. The bonuses of the 26…

A: The bonuses of the 26 employees are randomly selected and the following data were received: ∑ x =…

Q: A quality control expert at a drink bottling factory took a random sample of 9 bottles from a…

A: The sample size: n=9 The sample mean: x¯=505 mL The sample standard deviation: s=6 mL Confidence…

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.