Listed below are the amounts of strontium-90 (in millibecquerels or mBq) in a simple random sample of baby teeth obtained from Pennsylvania residents born after 1979 (based upon data from “An Unexpected Rise in Strontium-90 in U.S. Deciduous Teeth in the 1990's” by Mangano, et al., Science of the Total Environment). Frequency Table: Class width = 10; midpoint of first class = 114.5 | 155 | 142 | 149 | 130 | 151 | 163 | 151 | 142 | 156 | 133 | |:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:| | 138 | 161 | 128 | 144 | 172 | 137 | 151 | 166 | 147 | 163 | | 136 | 166 | 160 | 158 | 114 | 152 | 167 | 145 | 156 | 170 | | 150 | 158 | 151 | 145 | 152 | 140 | 170 | 129 | 188 | 156 | Frequency Table: (Class boundaries and frequencies not provided) Ogive: (Details not provided) ### Statistics: - Label attached to these stats: ________ | Mean | Std. Dev. | Skew | z-score | |:------:|:-----------:|:------:|:---------:| | | | | | ### 5-number-summary: | MIN | Q1 | Q2 | Q3 | MAX | |:-----:|:----:|:----:|:----:|:-----:| | | | | | | ### Modified Box

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

Listed below are the amounts of strontium-90 (in millibecquerels or mBq) in a simple random sample of baby teeth obtained from Pennsylvania residents born after 1979 (based upon data from “An Unexpected Rise in Strontium-90 in U.S. Deciduous Teeth in the 1990's” by Mangano, et al., Science of the Total Environment).

**Frequency Table**: Class width = 10; midpoint of first class = 114.5

| 155 | 142 | 149 | 130 | 151 | 163 | 151 | 142 | 156 | 133 |
|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|:-----:|
| 138 | 161 | 128 | 144 | 172 | 137 | 151 | 166 | 147 | 163 |
| 136 | 166 | 160 | 158 | 114 | 152 | 167 | 145 | 156 | 170 |
| 150 | 158 | 151 | 145 | 152 | 140 | 170 | 129 | 188 | 156 |

**Frequency Table**:
(Class boundaries and frequencies not provided)

**Ogive**:
(Details not provided)

### Statistics:
- **Label attached to these stats:** ________

| Mean | Std. Dev. | Skew | z-score |
|:------:|:-----------:|:------:|:---------:|
| | | | |

### 5-number-summary:
| MIN | Q1 | Q2 | Q3 | MAX |
|:-----:|:----:|:----:|:----:|:-----:|
| | | | | |

### Modified Box

Expert Solution

Step 1

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1. Frequency table:

Class interval	frequency (f)	c.f	mid-value (X)	fX	fX²
109.5 -- 119.5	2	2	114.5	229	26220.5
119.5 -- 129.5	2	4	124.5	249	31000.5
129.5 -- 139.5	5	9	134.5	672.5	90451.25
139.5 -- `149.5	9	18	144.5	1300.5	187922.3
149.5 -- 159.5	13	31	154.5	2008.5	310313.3
159.5 -- 169.5	6	37	164.5	987	162361.5
169.5 -- 179.5	2	39	174.5	349	60900.5
179.5 -- 189.5	1	40	184.5	184.5	34040.25
Total	40			5980	903210