What is the p-value for the two-sample t-test comparing mean birthweight for babies whose mothers are older than 35 with those whose mothers are younger than 35?The answer is not 0.6616. Birthweight Gestation5.84.26.44.55.86.85.26.17.588.67.16.676.66.37.38.55.57.568.39.56.926NS7.27.77.97.386977.37.876.9108.68108.58.9smoker33333435353737373838383838383939393939393940404040404040404041414141414141424244454401011011000011001111100001111100011110OOHO000motherage2422420264120282019201829313087793127192330222321241929242631272037352127372722322421202820

MotherageBirthweight245.8204.2266.4414.5205.8286.8205.2196.1207.5188298.6317.1306.6317276.6196.3237.…

Answered: What is the p-value for the two-sample…

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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Question

What is the p-value for the two-sample t-test comparing mean birthweight for babies whose mothers are older than 35 with those whose mothers are younger than 35?

The answer is not 0.6616.

Birthweight Gestation
5.8
4.2
6.4
4.5
5.8
6.8
5.2
6.1
7.5
8
8.6
7.1
6.6
7
6.6
6.3
7.3
8.5
5.5
7.5
6
8.3
9.5
6.9
26NS
7.2
7.7
7.9
7.3
8
6
9
7
7.3
7.8
7
6.9
10
8.6
8
10
8.5
8.9
smoker
33
33
34
35
35
37
37
37
38
38
38
38
38
38
39
39
39
39
39
39
39
40
40
40
40
40
40
40
40
40
41
41
41
41
41
41
41
42
42
44
45
44
0
1
0
1
1
0
1
1
0
0
0
0
1
1
0
0
1
1
1
1
1
0
0
0
0
1
1
1
1
1
0
0
0
1
1
1
1
0
OOHO
0
0
0
motherage
24
224
20
26
41
20
28
20
19
20
18
29
31
30
8779
31
27
19
23
30
22
23
21
24
19
29
24
26
31
27
20
37
35
21
27
37
27
22
32
24
21
20
28
20

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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