1st Edition

ISBN: 9781938168208

Author: Barbara Illowsky, Susan Dean

Publisher: OpenStax College

Concept explainers

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Videos

Textbook Question

Chapter 8, Problem 8.13TI

The Berkman Center Study referenced in Example 8.13 talked to teens In smaller focus groups, but also Interviewed additional teens over the phone. When the study was complete, 588 teens had answered the question about their Facebook friends wIth 159 savIng that the have more than 500 frIends. Use the “plus-four” method to find a 90% confidence Interval for the true proportion of teens that would report having more than 500 Facebook friends based on this larger sample. Compare the results to those in Example 8.13.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 8, Problem 8.12TI

Chapter 8, Problem 8.14TI

Students have asked these similar questions

An apartment hunter is shopping for either a one-bedroom or two-bedroom apartment in varying apartment buildings. She wants to estimate the additional amount she would have to pay, on average, for a two-bedroom apartment versus a one-bedroom apartment. The table shows the prices, in dollars, for one- and two-bedroom apartments from the nine buildings she visited. A 95% confidence interval for the true mean difference between two-bedroom and one-bedroom apartments for apartment buildings like the ones in the sample was (255.93, 508.51). A friend of the apartment hunter tells her to expect to pay about $500 more per month for a two-bedroom apartment than for a one-bedroom apartment. Does the confidence interval provide evidence for the friend’s claim? A. No, the confidence interval does not contain 0, so the friend’s claim is not plausible. B. No, the confidence interval contains many more numbers below 500 than above 500, so it is unlikely that the friend’s assertion is correct. C.…

In statistical comparisons, a p-value represents the likelihood that an observation was merely due to chance. Researchers look for low p-values (less than 0.05) when they analyze their results because this indicates an observed relationship between two variables is likely to be meaningful. A p-value less than 0.05 indicates that an observed relationship is statistically significant. Examine Table 1 in the research article, which compares the characteristics of the study participants based on their adherence to the DASH diet. Higher adherence to the DASH diet was statistically significantly associated with lower Group of answer choices 1 body mass index (BMI) 2 waist circumference 3 systolic blood pressure 4 diastolic blood pressure

Chapter 8 Solutions

Introductory Statistics

Ch. 8 - Suppose we have data from a sample. The sample...Ch. 8 - Suppose average pizza delivery times are normally...Ch. 8 - Table 8.2 shows a different random sampling of 20...Ch. 8 - Refer back to the pizza-delivery Try It exercise....Ch. 8 - Refer back to the pizza-deliver Try It exercise....Ch. 8 - Suppose we know that a confidence interval is...Ch. 8 - The population standard deviation for the height...Ch. 8 - You do a study of hypnotherapy to determine how...Ch. 8 - A random sample of statistics students were asked...Ch. 8 - Suppose 250 randomly selected people are surveyed...

Additional Math Textbook Solutions

Find more solutions based on key concepts

A ball is thrown into the air and the vertical position is given by x(t)=4.9t2+25t+5 . Use the Intermediate Val...

Calculus Volume 1

In Exercises 5-36, express all probabilities as fractions. 23. Combination Lock The typical combination lock us...

Essentials of Statistics, Books a la Carte Edition (5th Edition)

Sampling Method. In Exercises 9–12, determine whether the sampling method appears to be sound or is flawed. 9. ...

Elementary Statistics (13th Edition)

TRY IT YOURSELF 1 Find the mean of the points scored by the 51 winning teams listed on page 39.

Elementary Statistics: Picturing the World (7th Edition)

Coding Suppose you decided to code living situation using Dorm as the label for the column. How many ones and h...

Introductory Statistics

Standard Normal Distribution. In Exercises 17–36, assume that a randomly selected subject is given a bone densi...

Essentials of Statistics (6th Edition)

Knowledge Booster

$Statistics$

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.