**StatCrunch U: Survey Results**This report presents the analysis of survey data concerning gender distribution using StatCrunch. Below are the detailed results from various statistical analyses.### One Sample Proportion Confidence Interval- **Outcomes in**: Gender- **Success**: Female- **p**: Proportion of successes- **Method**: Standard-Wald**95% Confidence Interval Results:**| Variable | Count | Total | Sample Prop. | Std. Err. | L. Limit | U. Limit ||----------|-------|-------|--------------|-------------|------------|------------|| Gender | 55 | 100 | 0.55 | 0.049749372 | 0.45249302 | 0.64750698 |This table provides the confidence interval for the proportion of females in the survey, showing a sample proportion of 55%. The lower limit is approximately 45.25%, and the upper limit is approximately 64.75%.### Frequency Table Results for Gender- **Count**: 100| Gender | Frequency | Relative Frequency ||--------|-----------|--------------------|| Female | 55 | 0.55 || Male | 45 | 0.45 |This frequency table displays the distribution of gender in the sample. Females make up 55% of the population, while males make up 45%.### One Sample Proportion Hypothesis Test- **Outcomes in**: Gender- **Success**: Female- **p**: Proportion of successes- **\( H_0 \)**: p = 0.5- **\( H_A \)**: p ≠ 0.5**Hypothesis Test Results:**| Variable | Count | Total | Sample Prop. | Std. Err. | Z-Stat | P-value ||----------|-------|-------|--------------|-----------|--------|---------|| Gender | 55 | 100 | 0.55 | 0.05 | 1 | 0.3173 |This section details the hypothesis test evaluating whether the proportion of females differs from 50%. The p-value of 0.3173 indicates no significant difference at typical significance levels.These analyses summarize the gender distribution in the sample and the results of statistical tests regarding gender proportions. **3. What are the proportions of females and males at StatCrunchU?**a) Show that the conditions are met for the use of a normal model for a confidence interval (count of successes and failures are greater than 10).b) Determine a range of plausible values for this proportion by using StatCrunch to find a 95% confidence interval. Paste the StatCrunch printout below. (StatCrunch steps: Stat, Proportion Stats, One Sample, With Data.)c) Interpret your interval referring to females at StatCrunchU.d) Explain what is meant by “95% confident.”**4) Does your confidence interval support your hypothesis test? Explain.**

Note: Hi there! Thank you for posting the question. As your question has more than 3 parts, we have…

Answered: What are the proportions of females and…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A poll reported that only 1316 out of a total of 1746 adults in a particular region said they had a "great deal of confidence" or "quite a lot of confidence" in the military. Assume the conditions for using the CLT are met. Complete part (a) (a) Find a 95% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the military, and interpret this interval. The 95% confidence interval for the proportion that express a great deal of confidence or quite a lot of confidence in the military is: ( ? , ? )
A recent survey showed that 42% of US employers were likely to require higher employee contributions for health care coverage. Suppose the survey was based on a sample of 500 companies. Find the 99% confidence interval for the proportion of all companies likely to require higher employee contributions for health care coverage. (Round to four decimal places)
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1 = not attractive; 10 = extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females?7,7,1,8,6,5,8,8,8,8,5,9 What is the confidence interval for the population mean u? __<u<__ (Round to one decimal place as needed.)
2. In a simple random sample of 1200 Americans age 20 and over, 138 of them were found to have Type I diabetes. Round all answers to three decimal places. a) Report a 95% confidence interval for the proportion of all Americans age 20 and over with diabetes. J b) According to the Centers for Disease Control and Prevention, nationally, 10.7% of all Americans age 20 and over have diabetes. Does the confidence interval you found support or refute this claim? Explain.
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1=not attractive; 10=extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 6, 9, 2, 9, 6, 5, 8, 7, 7, 10, 5, 9
N1=26 n2=13 Mean1=48 mean2=45 Standard deviation1=9,2 Standard deviation2=4,1 b) Construct a 95% confidence interval to test whether the two sample means differs. Interpret your answers. c) State the assumptions used
Please help with A and B
Stanford University conducted a study of whether running is healthy for men and women over age 50. During the first eight years of the study, 1.5% of the 451 members of the 50-plus Fitness Association died. We are interested in the proportion of people over 5o who ran and died in the same eight-year period. Construct a 95% confidence interval for the population proportion of people over 50 who ran and died in the same eight-year period. Explain in a complete sentence what the confidence interval means
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1=not attractive; 10=extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 5,7,2,9,4,4,6,9,7,8,6,8
In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1=not attractive; 10=extremely attractive). Construct a confidence interval using a 90% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 7, 7, 3, 8, 4, 5, 7, 7, 7, 10, 5, 9

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

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

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

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

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

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

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS