Q1. A survey of 345 men showed that the mean time spent on daily grocery shopping is 15mins. From previous record we knew that o = 3 mins. Find the 98% confidence interval forpopulation mean.Q2. A poll of 140 students shows that the mean time spent weekly on cloths laundry is 150mins. We don't have previous record on population standard deviation, and so from the samplewe computed sample standard deviation and found that s = 10 mins. Find the 95% confidenceinterval for the population mean.

Note: According to Bartleby guidelines expert solve only one question and rest can be reposted

Answered: Q1. A survey of 345 men showed that the…

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

Suppose we have the data points (0,-3), (5,1), and (10,a). Find a value of a so that the line of best fit is a better model than the mean with 95% confidence or better. Round your answer to three decimal places.
2) After doubling all of the scores, the mean was found to be 28 and the standard deviation was 4. What were the values for the mean and SD before the change? Explain
the statistic X defined as X = 49S 2
Suppose you received a score of 95 out of 100on exam 11 . The mean was 79and the standard deviation was 8 . If your score on exam 2 is 90out of 100, and the mean was 60with a standard deviation of 15, then you did:
I'm a bit confused about how to solve this (any help is appreciated)
The sample mean X is to be used to estimate the mean u of a normal distribution with standard deviation 4 inches. How large a sample should be taken in order chat, with 90% probability, the estimate will be in error by at most one-half inch?
The scores on a standardized test are normally distributed with a mean of 120 and standard deviation of 5. What test score is 1.1 standard deviations above the mean?
In a set of 48 months of data for medical the mean is 15 days and standard deviation of 4.2 how many months fewer than 19.2 days per month reported medical leave ( one standard deviation above the mean?
After the physical training required during World War II the distribution of a mile run times for male students at the University of Illinois was approximately normal with a mean of 7.11 minutes in a standard deviation of 0.74 minutes what proportion of these students can run a mile in 5 minutes or less Using the same data what percent of students would take between 6 and 8 minutes to run a mile
1) After 5 pts were added to every score in a sample the mean is found to be 62 and the standard deviation is 12. What were the values for the mean and SD before the change? Explain
A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 7.8 reproductions and the population standard deviation is known to be 2.2 If a sample of 697 was used for the study, construct the 85% confidence interval for the true mean number of reproductions per hour for the bacteria. Round your answers to one decimal place
If the scores on a test have a mean of 43 and standard deviation of 1.5, what is z score of 40?

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

Q1. A survey of 345 men showed that the mean time spent on daily grocery shopping is 15 mins. From previous record we knew that o = 3 mins. Find the 98% confidence interval for population mean.