459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours. Find a point estimate of the true proportion of all light bulbs that last more than 500 hours.

459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours. Find a point estimate of the true proportion of all light bulbs that last more than 500 hours.

Statistic Assignment.

Title: Confidence Intervals

1.459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours. Find a point estimate of the true proportion of all light bulbs that last more than 500 hours.

Find the critical value for zα/2 that corresponds to a degree of confidence of 98%.
Find the margin of error for the 95% confidence interval used to estimate the population proportion with n = 163 and x = 96.
Construct the confidence interval for question 3.
Interpret the confidence interval found in question 4.
What are the requirements for a Student’s t-distribution?
Find the critical value for tα/2 corresponding to n = 12 and 95% confidence level.
Use the confidence level and sample data to find the margin of error E.
College students’ annual earnings:

99% confidence, n = 81, = $3967, s = $874

Construct the confidence interval for question 8 above.

Interpret and describe the confidence obtained in question 9 in non-technical terms.
Attachments:

statistics_math_assgn._one.docx


 

PLACE THIS ORDER OR A SIMILAR ORDER WITH NURSING HOMEWORK HELP TODAY AND GET AN AMAZING DISCOUNT


The post 459 randomly selected light bulbs were tested in a laboratory, 291 lasted more than 500 hours. Find a point estimate of the true proportion of all light bulbs that last more than 500 hours. appeared first on Nursing Homework Help.

I absolutely LOVE this essay writing service. This is perhaps the tenth time I am ordering from them, and they have not failed me not once! My research paper was of excellent quality, as always. You can order essays, discussion, article critique, coursework, projects, case study, term papers, research papers, reaction paper, movie review, research proposal, capstone project, speech/presentation, book report/review, annotated bibliography, and more.

Ask a Question. Get an Answer ASAP!

PLACE YOUR ORDER