un a random sample of 26 people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean µ. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is (Round to one decimal place as needed.y The margin of error of u is. (Round to one decimal place as needed.) Interpret the results. O A. With 90% confidence, it can be said that the commute time is between the bounds of the confidence interval. O B. If a large sample of people are taken approximately 90% of them will have commute times between the bounds of the confidence interval. OC. It can be said that 90% of people have a commute time between the bounds of the confidence interval. O D. With 90% confidence, it can Be said that the population mean commute time is between the bounds of the confidence interval.

un a random sample of 26 people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean µ. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is (Round to one decimal place as needed.y The margin of error of u is. (Round to one decimal place as needed.) Interpret the results. O A. With 90% confidence, it can be said that the commute time is between the bounds of the confidence interval. O B. If a large sample of people are taken approximately 90% of them will have commute times between the bounds of the confidence interval. OC. It can be said that 90% of people have a commute time between the bounds of the confidence interval. O D. With 90% confidence, it can Be said that the population mean commute time is between the bounds of the confidence interval.

Name: In a random sample of 26 people, the mean commute time to work was 32
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: In a random sample of 26 people, the mean commute time to work was 32.6 minutes and the standard deviation was 7.3 minutes. Assume the population is normallydistributed and use a t-distribution to construct a 90% confidence interval for the populati

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

A sample of 24 heads of lettuce was selected. Assume that the population distribution of head weight is normal. The weight of each head of lettuce was then recorded. The mean weight was 2.6 pounds. The population standard deviation is known to be 0.4 pounds, Calculate a 95% confidence interval? (Round to 3 decimals) CS Scanned with CamScanner
Use O The t Distribution Table to find the t,a2 value for an 80% confidence interval for the mean when the sample size is 14. a/2 %3D
Assume that adults have lQ scores that are normally distributed with a mean of 100.9 and a standard deviation 19.5. Find the first quartile Q,, which is the IQ score separating the bottom 25% from the top 75%. (Hint Draw a graph.) The first quartile is (Type an integer or decimal rounded to one decimal place as needed.) Enter your answer in the answer box and then click Check Answer. All parts showing Clear All Check Answer
Hospital Noise Levels For a sample of 8 operating rooms taken in a hospital study, the mean noise level was 43 decibels and the standard deviation was 10.6. Find the 90% confidence interval of the true mean of the noise levels in the operating rooms. Assume the variable is normally distributed. Round your answers to at least two decimal places.
A random variable is not normally distributed, but it is mound shaped. It has a mean of 18 and a standard deviation of 2. For a sample of size 40, state the mean of the sample mean and the standard deviation of the sample mean. Round to two decimal places if necessary.μx̄ = σx̄ =
Save 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 2 and the population standard deviation σ. Use a 90% level of confidence. Assume that the population has a normal distribution. n=19 s=16 grains per gallon What is the confidence interval for the population variance o²? (Round to one decimal place as needed.)
Only part d
A survey found that women's heights are normally distributed with mean 62.1 inches and standard deviation 3.4 inches The survey also found that men's heights are normally distributed with mean 69.7 inches and standard deviation 3.6 inches Most of the live characters employed at an amusement park have height requirements of a minimum of 56 inches and a maximum of 62 inches 1. The percentage of men who meet the height requirement is _____ Circle which one is correct 2. Since most men (meet/do not meet) the height requirement, it is likely that most of the characters are (women/men) 3. The new height requirements are a minimum of______ inches and and maximum of _______inches
A researcher wanted to estimate the total number of hours students spent watching Zoom lectures each week for their courses. A sample of 48 students was surveyed and the sample spent a mean time of 22.1 hours watching Zoom lectures in a week, with a sample standard deviation of 4.7 hours. Construct a 95% confidence interval for the population mean number of hours students spent watching Zoom lectures. Round your final answers to one decimal place. ______________ hours ≤ μ ≤ ______________ hours
Use technology to construct the confidence intervals for the population variance 6² and the population standard deviation o. Assume the sample is taken from a normally distributed population. c = 0.90, s = 37, n = 18 35 The confidence interval for the population variance is (Round to two decimal places as needed.) The confidence interval for the population standard deviation is (.) (Round to two decimal places as needed.)
A survey found that the average hotel room rates and standard deviations for the state of Massachusetts and the state of Wisconsin. Assume that the data were obtained from two samples were normally distributed. At a=0.05 level of significance, can it be concluded that there is a significant difference in the rates? Use the data table below. Report only the value required from the question below make sure to express your final answers in 4 decimal places. Parameter Massachusetts Wisconsin Sample size 41.00 36.00 sample 348.39 356.53 mean population standard deviation 30.84 34.91 а. р-value:
Steels rods are manufactured with a mean length of 25 cm. Because of the variability in the manufacturing process, the lengths of the rods are approximately normally distributed with a standard deviation of 0.08 cm. Complete question D. D. If an order comes in for 10,000 steel rods, how many rods should the plant manager expect to manufacture if the order states that all rods must be between 24.9 cm and 25.1 cm??