2Use the given degree of confidence and sample data to construct a confidence interval for the population mean j. Assume that the population has a normal distribution.The football coach randomly selected ten players and timed how long each plcer took to perform a certain drill. The times (in minutes) were:7.7 10 9.5 8.8 11.4 7.1 6.1 11.8 10.5 12Determine a 95% confidence interval for the mean time for all players.OA. 10.95 min<μ< 8.03 minOB. 11.05 min<μ< 7.93 minOC. 8.03 min<μ< 10.95 minOD. 7.93 min<μ< 11.05 minS#m3d%5O9allyb&7hU8E9kTime Remaining: 00:13:21 NextNov 299:35 US+ 11

The objective of this question is to construct a 95% confidence interval for the population mean…

Answered: 2 Use the given degree of confidence…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A boat capsized and sank in a lake. Based on an assumption of a mean weight of 133 Ib, the boat was rated to carry 70 passengers (so the load limit was 9,310 Ib). After the boat sank, the assumed mean weight for similar boats was changed from 133 lb to 174 lb. Complete parts a and b below. a. Assume that a similar boat is loaded with 70 passengers, and assume that the weights of people are normally distributed with mean of 181.1 Ib and a standard deviation of 38.6 lb. Find the probability that the boat is overloaded because the 70 passengers have mean weight greater than 133 lb The probability isO: (Round to four decimal places as needed.) b. The boat was later rated to carry only 17 passengers, and the load limit was changed to 2,958 Ib. Find the probability that the boat is overloaded because the mean weight of the passengers is greater than 174 (so that their total weight is greater than the maximum capacity of 2,958 Ib). The probability is. (Round to four decimal places as needed.)…
Tina catches a 14-pound bass. She does not know the population mean or standard deviation. So she takes a sample of five friends and they say the last bass they caught was 9, 12, 13, 10, and 10 pounds. Find the t and calculate a 95% (α = .05) confidence interval.
A researcher would like to know how much physical endurance is affected by a common herbal supplement. The researcher measures endurance for a sample of n = 9 participants. Each is then given a 30-day supply of the herbs and, one month later, endurance is measured again. For this sample, endurance increased by an average of MD= 6 points with SSD = 216. a. make a point estimate of the mean difference in endurance after taking the herbs. b. make a 95% confidence interval estimate of the population mean difference.
As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence interval for the population variance sigma squared and the population standard deviation sigma. Use a 90% level of confidence. Assume that the population has a normal distribution. n = 23s = 18 grains per gallon a) The confidence interval for the population variance sigma squared is: b) The confidence interval for the population standard deviation sigma is:
The data set below represents the weights in grams of 10 randomly selected adult male fox squirrels from a forest. Assume the weights are normally distributed. 821 857 782 930 720 821 794 876 810 840 Find the sample mean and sample standard deviation Construct a 90% confidence interval for the population mean. Interpret the results from b.
Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the population has a normal distribution.Thirty randomly selected third graders were weighed. If the sample mean weight was 90 pounds and the standard deviation s = 6.7 pounds, construct a 99% confidence interval for the mean weight of all third graders.
Use the information provided to find the minimum sample size required to estimate an unknown parameter Mean(u). How many students should be randomly selected to estimate the average weekly earnings of students at a university? We want 80% confidence that the sample mean is within $ 3 of the population mean and the population standard deviation is known to be $ 57. Select one: a. 978 b. 362 c. 1388 d. 594 e. 2397

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