A random sample of college students where asked how many hours in an average week they spend watching tv. The results are shown in the table. Find the 98% confidence interval, using the formula, for the mean number of hours all spend watching tv in an average week. SHOW ALL STEPS. Find the 98% confidence interval, using the formula, for the mean number of hours all spend watching tv in an average week if we are giventhe population standard deviation is 3.5 hours. SHOW ALL STEPSWrite a sentence about why your two intervals are different.5.573.591217.56.18106010133122.55.5258851.511159.55107.5 D. What proportion of the sample watched more than 5 hours of tv in the average week? E. Use the calculator to find the 98% confidence interval for the true proportion that watch more than 5 hours. (Hint: Be sure to interpret clearly the interval).

The average time spending on watching T.V by college students is given. Need to construct a…

Answered: A random sample of college students…

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 random sample of college students where asked how many hours in an average week they spend watching tv. The results are shown in the table.

1. Find the 98% confidence interval, using the formula, for the mean number of hours all spend watching tv in an average week. SHOW ALL STEPS.
2. Find the 98% confidence interval, using the formula, for the mean number of hours all spend watching tv in an average week if we are giventhe population standard deviation is 3.5 hours. SHOW ALL STEPS
3. Write a sentence about why your two intervals are different.

5.5	7	3.5	9	12	1	7.5	6.1	8	10
6	0	10	13	3	12	2.5	5.5	2	5
8	8	5	1.5	11	15	9.5	5	10	7.5

D. What proportion of the sample watched more than 5 hours of tv in the average week?

E. Use the calculator to find the 98% confidence interval for the true proportion that watch more than 5 hours.

(Hint: Be sure to interpret clearly the interval).

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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