Question: In a time-use study, 52 randomly selected managers were found to spend a mean of 3.91 h each day on paperwork. The population standard deviation

In a time-use study, 52 randomly selected managers were found to spend a mean of 3.91 h each day on paperwork. The population standard deviation is known to be about 0.75 h. Construct the 95 % confidence interval for the mean time spent on paperwork by all managers. Round the z-value to 3 decimal places and the confidence interval values to 2 decimal places. For part (a), use a positive z-value. (a) What is the critical z-value that will need to be used to calculate the confidence interval? (b) What is the 95% confidence interval

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 College nursing student wants to estimate the number of times per year a middle aged woman visits a doctors office. He estimates that the population standard deviation of the number of visits is...

1) A national beauty salon chain wants to estimate the number of times per year a woman has her hair done at a beauty salon if she uses one at least once a year. The chain's researcher estimates...

Suppose a business researcher wants to estimate the average travel time to work in Etobicoke using a 98% level of confidence. A random sample 211 Toronto commuters is taken and the travel time to...

In a time-use study, 24 randomly selected managers were found to spend a mean of 3.11 h each day on paperwork. The population standard deviation is known to be about 1.50 h. Construct the 95 %...

Please help ! In a time-use study, 58 randomly selected managers were found to spend a mean of 3.56 h each day on paperwork. The population standard deviation is known to be about 1.53 h. Construct...

In a time-use study, 47 randomly selected managers were found to spend a mean of 3.16 h each day on paperwork. The population standard deviation is known to be about 1.16 h. Construct the 99 %...

In a time-use study, 40 randomly selected managers were found to spend a mean of 3.14 h each day on paperwork. The population standard deviation is known to be about 1.43 h. Construct the 90 %...

Hi, I needed help with this question Thank you In a time-use study, 63 randomly selected managers were found to spend a mean of 3.70 h each day on paperwork. The population standard deviation is...

In a time-use study, 58 randomly selected managers were found to spend a mean of 3.56 h each day on paperwork. The population standard deviation is known to be about 1.53 h. Construct the 95 %...

Why update a business plan?

Contemporary computers often have more than 100MB of physical memory. Suppose the page size is 2KB. How many entries would an associative memory need in order to implement a page table for the memory?

The charAt ( ) function will tell you what a specific character is in a given string. Group of answer choices True False

Read the context below and answer the questions. Recognizing the migration of consumers from offline to online, ABC Company has started its email marketing since last year. However, a preliminary...

7. Give examples of information-overload from your everyday life. Review the six consequences that information-overload can lead to and discuss the examples in relation to all the six points.

6. What does it mean when we say that our interpretation of information is dependent on our prior knowledge and our values?

8. Based on a strategy that is used at your workplace, find information that goes against this strategy.