Answer) Here option B is the right answer,
As by considering the definition of the confidence interval, which states that the confidence interval is the range of value in which you are sure that the population mean will fall in.
So therefore for 95% confidence interval, the best interpretation would be,
The 95% confidence interval means that we are 95% confident that population mean is between the low and high interval values.
Which is option B.
25. (4pains) which is the best imerpretation ofa95% omsence interval for the sample mean: a) The...
A random sample of 20 recent weddings in a country yielded a mean wedding cost of $26,387.22. Assume that recent wedding costs in this country are normally distributed with a standard deviation of $8400. Complete parts (a) through (c) below. a. Determine a 95% confidence interval for the mean cost, u, of all recent weddings in this country. The 95% confidence interval is from $to $ (Round to the nearest cent as needed.) b. Interpret your result in part (a)....
A random sample of 20 recent weddings in a country yielded a mean wedding cost of $26,327.04. Assume that recent wedding costs in this country are normally distributed with a standard deviation of $7700. Complete parts (a) through (c) below. a. Determine a 95% confidence interval for the mean cost, μ, of all recent weddings in this country. The 95% confidence interval is from $___ to $___. b) Interpret your result in part (a). Choose the correct answer below. A.We...
A 95% confidence interval for the mean height in millimeters of hydroponic tomato plants 14 days after germination is (56.1, 66.9). What is the correct interpretation of the confident interval? We can be 95% confident that the true mean height of hydroponic tomato plants 14 days after germination is between 56.1 and 66.9 millimeters. We can be 95% confident that the sample mean height of hydroponic tomato plants 14 days after germination is between 56.1 and 66.9 millimeters. 95% of...
Explain what "95% confidence" means in a 95% confidence interval. What does "95% confidence" mean in a 95% confidence interval? A. If 100 different confidence intervals are constructed, each based on a different sample of size n from the same population, then we expect 95 of the intervals to include the parameter and 5 to not include the parameter. B. The probability that the value of the parameter lies between the lower and upper bounds of the interval is 95%....
Let's say we have constructed a 95% confidence interval estimate for a population mean. Which of the following statements would be correct? A. We expect that 95% of the intervals so constructed would contain the true population mean. B. We are 95% sure that the true population mean lies either within the constructed interval or outside the constructed interval. C. Taking 100 samples of the same size, and constructing a new confidence interval from each sample, would yield five intervals...
2 words Question 2 1 pts We surveyed a random sample of students and found that they had on average 2 parking tickets in the past year. A 95% confidence interval for the average number of parking tickets is (1.02, 2.98). Which one of the following statements is valid? We are 95% confident that the true mean number of parking tickets is between 1.02 and 2.98. 95% of the population of students have an average number of parking tickets between...
The mean and the standard deviation of the sample of 100 bank customer waiting times are x¯x¯ = 5.14 and s = 2.321. Calculate a t-based 95 percent confidence interval for µ, the mean of all possible bank customer waiting times using the new system. Are we 95 percent confident that µ is less than 6 minutes?. Assume normality. (Choose the nearest degree of freedom for the given sample size. Round your answers to 3 decimal places.) The t-based 95 percent confidence interval is [, ]. (Click to select)YesNo , interval is (Click to select)lessmore than...
3) Is it true that the sample mean is always equal to the population mean that we picked the sample from? Explain. 5) Is it true that the confidence interval is narrower for 95% confidence than for 90% confidence? Explain 6) Is it true that the Sample means are less variable than individual observations as n→∞ ? Explain In a certain population of mussels (mytilus edulis) 80% of the individuals are infected with an intestinal parasite. A marine biologist plans...
Question of 41 1.0 Points A 95% confidence interval for the true mean cholesterol level of adult males based on 25 randomly selected subjects extends from 175 mg 1 to 250 mg L. What is a proper interpretation of the confidence interval? A Ninety-five percent of the population has a cholesterol level between 175 and 250 m l B. We are 95% confident that the true mean cholesterol level of the population falls between 175 and 250 mgt C. More...
Please circle all final answers and
indicate which portion you are working on. Will rate for correct
answers. Please show all work. Thank you!
10.2.3 GO Tutorial The diameter of steel rods manufactured on two different extrusion machines is being investigated. Two random samples of sizes nj = 15 and n2 = 17 are selected, and the sample means and sample variances are Ij = 8.70, sỉ = 0.35, 72 = 8.68, sź = 0.40, respectively. Assume that o =...