Question: A simple random sample of60items resulted in a sample mean of 80. The population standard deviation is =15. Compute the95%confidence interval for the population mean.

A simple random sample of60items resulted in a sample mean of 80. The population standard deviation is =15.

Compute the95%confidence interval for the population mean. Round your answers to one decimal place

Assume that the same sample mean was obtained from a sample of 120items. Provide a95% confidence interval for the population mean. Round your answers to two decimal places.

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

A simple random sample of60items resulted in a sample mean of 25. The population standard deviation is =9. (Round your answers to two decimal places.) (a) What is the standard error of the mean, x ?...

15 and 16 please A simple random sample with n-17 provided a sample mean of 20 and sample standard deviation of 21% Develop 90% confidence interval for the population mean. a) 16.508 - 23.492 b)...

You may need to use the appropriateappendix tableortechnologyto answer this question.A simple random sample of90items resulted in a sample mean of60. The population standard deviation is =15....

A simple random sample of items resulted in a sample mean of . The population standard deviation is . Round your answers to two decimal places. a. What is the standard error of the mean, ? b. At...

Math 1.A simple random sample of45 men from a normally distributed population results in a standard deviation of11.3 beats per minute. The normal range of pulse rates of adults is typically given as...

A simple random sample of90items resulted in a sample mean of80. The population standard deviation is =15. (a)Compute the 95% confidence interval for the population mean. (Round your answers to two...

\f\fPrint Test 12/8/13 5:02 PM PRINTABLE VERSION Test 3 You scored 50 out of 70 Question 1 Your answer is CORRECT. sh is ar stu ed d vi y re aC s o ou urc rs e eH w er as o. co m A random sample of...

Suppose you have a sample size of 50 with a mean 38 and a population standard deviation of 3.3. Based on this, construct a 99% confidence interval for the true population mean. As in the reading, in...

QUESTION 1 PART 1 Given a simple random sample of size n from a Normal population with mean , and standard deviation , select the pair of hypotheses that can be tested in order to answer the...

Suppose you wish to estimate a population mean correct to within 0.15 with a confidence level of .90. You do not know 2, but you know that the observations will range in value between 33 and 41...

Julio had 1000 square ft of living space. Then he added a room that was 20ft by 10ft. What was the percent increase of living space?

Refrigerant-134a is expanded adiabatically in an expansion valve from 700 kPa and 25C to 160 kPa. For environment conditions of 100 kPa and 20C, determine (a) The work potential of R-134a at the...

On May 1 0 , 2 0 2 3 , Wildhorse Co . enters into a contract to deliver a product to Sheffield Inc. on June 1 5 , 2 0 2 3 . Sheffield agrees to pay the full price of \ ( \ $ 2 , 2 3 0 \ ) on July 1 5...

Item 1 Ackn In the case below, the original source material is given along with a sample of student work. Determine the type of plagiarism by clicking the appropriate radio button. Original Source...

3. An initial value (anchoring).

4. Similarity (representativeness).

2. In this chapter, the reader should reflect on the following concepts: Idealized system design, analogue thinking, contrast principle, consistency principle, reciprocity principle, scarcity...