Tinterval Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) (13.046,22.15) x= 17.598 Sx = 16.01712719 n= 50 below. a. Express the confidence interval in the format that uses the "less than" symbol. Given that the original listed data use one decimal place, round the confidence interval limits accordingly. Mbps < u< Mbps (Round to two decimal places as needed.) b. Identify the best point estimate of u and the margin of error. The point estimate of u is Mbps. (Round to two decimal places as needed.) The margin of error is E= Mbps. (Round to two decimal places as needed.) c. In constructing the confidence interval estimate of u, why is it not necessary to confirm that the sample data appear to be from a population with a normal distribution? A. Because the population standard deviation is known, the normal distribution can be used to construct the confidence interval. B. Because the sample size of 50 is greater than 30, the distribution of sample means can be treated as a normal distribution. C. Because the sample standard deviation is known, the normal distribution can be used to construct the confidence interval. Click to select your answer(s).

Tinterval Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts (a) through (c) (13.046,22.15) x= 17.598 Sx = 16.01712719 n= 50 below. a. Express the confidence interval in the format that uses the "less than" symbol. Given that the original listed data use one decimal place, round the confidence interval limits accordingly. Mbps < u< Mbps (Round to two decimal places as needed.) b. Identify the best point estimate of u and the margin of error. The point estimate of u is Mbps. (Round to two decimal places as needed.) The margin of error is E= Mbps. (Round to two decimal places as needed.) c. In constructing the confidence interval estimate of u, why is it not necessary to confirm that the sample data appear to be from a population with a normal distribution? A. Because the population standard deviation is known, the normal distribution can be used to construct the confidence interval. B. Because the sample size of 50 is greater than 30, the distribution of sample means can be treated as a normal distribution. C. Because the sample standard deviation is known, the normal distribution can be used to construct the confidence interval. Click to select your answer(s).

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Use Table V in Appendix A to determine the t-percentile that is required to construct each of the following two-sided confidence intervals: (Express your answers to 3 decimal places.) Confidence level = 95 %, degrees of freedom = 11 , Confidence level = 95% , degrees of freedom = 14 Confidence level = 99 %, degrees of freedom = 12 Confidence level = 99% , degrees of freedom = 10
Use the given confidence interval to find the margin of error and the sample mean. (13.0,20.4) The sample mean is. (Type an integer or a decimal.)
You measure 38 dogs' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 5.6 ounces. Based on this, construct a 99% confidence interval for the true population mean dog weight. Round Iyour answers to two decimal places. <με Enter an integer or decimal number [more..
Sales personnel for Skillings Distributors submit weekly reports listing the customer contacts made during the week. A sample of 85 weekly reports showed a sample mean of 18.5 customer contacts per week. The sample standard deviation was 5.4. Provide 90% and 95% confidence intervals for the population mean number of weekly customer contacts for the sales personnel. 90% confidence interval, to 2 decimals: 95% confidence interval, to 2 decimals:
Mrs. Gallas wanted to estimate the average weight of an Oreo cookie to determine if theaverage weight was less than advertised. She selected a random sample of 30 cookies andfound the weight of each cookie (in grams). The mean weight was = 11.1921 grams with astandard deviation of sx = 0.0817 grams. Make a 95% confidence interval to estimate the truemean weight of an Oreo. 1. What is the formula for calculating the standard deviation of the sampling distribution of x? 2.What condition must be met to use this formula? Has it been met?
4..
Import the data from the Hill City Excel file into Minitab.You are trying to predict Price.Note: Mtn View=1 if there is a mountain view, 0 otherwise. The rest of the variables should be self explanatory. 1.Perform an F Test for overall significance of the model 2.Perform a T test for slope for the age variable 3. Find a 95% confidence interval for the slope of the SqFeet variable4. Create a prediction, CI, and PI for 1 new set of x values (any valid numbers you want), and interpret each.5. Run the residual plots and indicate if they show any problems with the model.
Find the following. Enter your answer rounded to at least two decimals. z a/2 for the 97% confidence interval
Americans spend nearly $7 billion on Halloween costumes and decorations. Sample data showing the amount, in dollars, 16 adults spent on a Halloween costume are contained in the Excel Online file below. Construct a spreadsheet to answer the following questions. c. Provide a 95% confidence interval estimate of the population standard deviation for the amount adults spend on a Halloween costume (to 2 decimals)? The numbers provided: 13, 66, 21, 67, 33, 33, 31, 45, 51, 14, 12, 95, 46, 34, 62, 27
Assume that the 95% confidence interval for mean=9 and standard devaition=20. For a particular data, the standardized value z = 2.73. We can say that: Select one: a. The data with standardized value 2.73 does not belong to the confidence interval and the value is less than the average. b. The data with standardized value 2.73 does not belong to the confidence interval and the value is greater than the average. c. Cannot interpret the z-value information provided. d. The data with standardized value 2.73 if it belongs to the confidence interval and the value is less than the average. e. The data with standardized value 2.73 if it belongs to the confidence interval and the value is greater than the average.
J 7
Researchers studied the mean egg length (in millimeters) for a bird population. After taking a random sample of eggs, they obtained a 95% confidence interval of (45,60). What is the value of the margin of error? Choose the correct answer below. A. 15 mm B. 52.5 mm O c. 7.5 mm O D. 1.96