1. The data below represent the weights (in grams) of a random sample of 50 candies. 0.99 0.87 0.84 0.85 0.82 0.86 0.98 0.85 0.82 0.82 0.83 0.89 0.79 0.85 0.89 0.83 0.71 0.82 0.76 0.83 0.93 0.79 0.78 0.93 0.84 0.94 0.88 0.87 0.84 0.75 0.97 0.83 0.78 0.79 0.82 0.79 0.85 0.89 0.89 0.79 0.71 0.82 0.75 0.73 0.81 0.81 0.89 0.94 0.92 0.84 a. Determine the sample standard deviation weight between 0.709 and 0.973 gram. b. Determine the actual percentage of candies that weigh between 0.709 and 0.973 gram, inclusive.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
100%

can you please explain this please

### Data Analysis and Hypothesis Testing

#### 1. Candy Weight Analysis

The table below represents the weights (in grams) of a random sample of 50 candies:

| 0.99 | 0.87 | 0.84 | 0.85 | 0.82 | 0.86 | 0.98 | 0.85 | 0.82 | 0.82 |
|------|------|------|------|------|------|------|------|------|------|
| 0.83 | 0.89 | 0.79 | 0.85 | 0.89 | 0.83 | 0.71 | 0.82 | 0.76 | 0.83 |
| 0.93 | 0.79 | 0.78 | 0.93 | 0.84 | 0.94 | 0.88 | 0.87 | 0.84 | 0.75 |
| 0.97 | 0.83 | 0.78 | 0.79 | 0.82 | 0.79 | 0.89 | 0.89 | 0.79 | 0.79 |
| 0.71 | 0.82 | 0.75 | 0.73 | 0.81 | 0.81 | 0.89 | 0.94 | 0.92 | 0.84 |

**Tasks:**
a. Determine the sample standard deviation for weights between 0.709 and 0.973 grams.

b. Determine the percentage of candies weighing between 0.709 and 0.973 grams, inclusive.

#### 2. Internet Access in Households

An economist believes that the percentage of urban households with Internet access is greater than that of rural households. To test this hypothesis:

- A sample of 800 urban households shows that 338 have Internet access.
- A sample of 750 rural households shows that 292 have Internet access.

**Task:**
Test the economist’s claim at the \(\alpha = 0.05\) level of significance.
Transcribed Image Text:### Data Analysis and Hypothesis Testing #### 1. Candy Weight Analysis The table below represents the weights (in grams) of a random sample of 50 candies: | 0.99 | 0.87 | 0.84 | 0.85 | 0.82 | 0.86 | 0.98 | 0.85 | 0.82 | 0.82 | |------|------|------|------|------|------|------|------|------|------| | 0.83 | 0.89 | 0.79 | 0.85 | 0.89 | 0.83 | 0.71 | 0.82 | 0.76 | 0.83 | | 0.93 | 0.79 | 0.78 | 0.93 | 0.84 | 0.94 | 0.88 | 0.87 | 0.84 | 0.75 | | 0.97 | 0.83 | 0.78 | 0.79 | 0.82 | 0.79 | 0.89 | 0.89 | 0.79 | 0.79 | | 0.71 | 0.82 | 0.75 | 0.73 | 0.81 | 0.81 | 0.89 | 0.94 | 0.92 | 0.84 | **Tasks:** a. Determine the sample standard deviation for weights between 0.709 and 0.973 grams. b. Determine the percentage of candies weighing between 0.709 and 0.973 grams, inclusive. #### 2. Internet Access in Households An economist believes that the percentage of urban households with Internet access is greater than that of rural households. To test this hypothesis: - A sample of 800 urban households shows that 338 have Internet access. - A sample of 750 rural households shows that 292 have Internet access. **Task:** Test the economist’s claim at the \(\alpha = 0.05\) level of significance.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Research Design Formulation
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
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 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…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
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
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman