Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

Find the probability and interpret the results. If convenient, use technology to find the probability. The population mean annual salary for environmental compliance specialists is

image text in transcribedimage text in transcribedimage text in transcribedimage text in transcribedimage text in transcribedimage text in transcribedimage text in transcribed
Find the probability and interpret the results. If convenient, use technology to find the probability. The population mean annual salary for environmental compliance specialists is about $66,000. A random sample of 44 specialists is drawn from this population. What is the probability that the mean salary of the sample is less than $62,500? Assume 0' = $6,500. The probability that the mean salary of the sample is less than $62,500 is (Round to four decimal places as needed.) Interpret the results. Choose the correct answer below. Only 2% of samples of 44 specialists will have a mean salary less than $62,500. This is an extremely unusual event. Only 0.02% of samples of 44 specialists will have a mean salaw less than $62,500. This is an extremely unusual event. About 2% of samples of 44 specialists will have a mean salary less than $62,500. This is not an unusual event. 9.0.65.5 About 0.02% of samples of 44 specialists will have a mean salary less than $62,500. This is not an unusual event. Find the critical value zo necessary to form a confidence interval at the level of confidence shown below. C = 0.96 . . . Z= (Round to two decimal places as needed.)Find the margin of error for the given values of c, o, and n. c=0.95, o=3.8, n = 81 a Click the icon to view a table of common critical values. E = D (Round to three decimal places as needed.) You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals. A random sample of 50 home theater systems has a mean price of $139.00. Assume the population standard deviation is $15.20. . . . Construct a 90% confidence interval for the population mean. The 90% confidence interval is (,). (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is (,). (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. A. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is wider than the 90%. O B. With 90% confidence, it can be said that the sample mean price lies in the first interval. With 95% confidence, it can be said that the sample mean price lies in the second interval. The 95% confidence interval is wider than the 90%. O C. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is narrower than the 90%.Find the critical value to for the confidence level c = 0.98 and sample size n = 7. Click the icon to view the t-distribution table. . . . ts (Round to the nearest thousandth as needed.)Find the margin of error for the given values of c, s, and n. c=0.95.s=5, n=26 3 Click the icon to View the tdistribution table. The margin of error is El. (Round to one decimal place as needed.) Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. C = 0.98, x = 13.2, s =0.67, n= 14 . . . (Round to one decimal place as needed.)

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Precalculus Concepts Through Functions, A Unit Circle Approach To Trigonometry

Authors: Michael Sullivan, Michael Sullivan III

3rd Edition

0321925866, 9780321925862

More Books

Students also viewed these Mathematics questions

Question

What is empathy? Describe how it is related to prejudice.

Answered: 1 week ago