Question: A new tool is supposed to reduce the time it takes to assemble a component in a factory. A random sample of workers is selected,

A new tool is supposed to reduce the time it takes to assemble a component in a factory. A random sample of workers is selected, and the assembly times are measured with and without the new tool. The average difference in assembly time is 3.4 minutes, with a standard deviation of 4.6 minutes. Sample size is 18.You may assume that the differences are normally distributed. Is there evidence, at the 5% level of significance, that the new tool speeds up assembly time? The order of subtraction is (time without tool - time with tool).

Step by Step Solution

★★★★★

3.42 Rating (168 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

H 0 D 0 H 1 D 0 The order of subtraction is time without to... View full answer

Question Has Been Solved by an Expert!

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

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

487-M-S-S-D (1248).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

To shorten the time it takes him to make his favorite pizza, a student designed an experiment to test the effect of sugar and milk on the activation times for baking yeast. Specifically, he tested...

A parking garage in Memphis monitors the time it takes customers to exit the parking structure from the time they get in their car until they are on the streets. A sample of 28 exits was recently...

The graph below shows the time it takes Quick Pain Relief to relieve a persons pain. The graph below that shows the time a competitors product takes to relieve pain. Why might these graphs be...

please do fast:- According to the U.S. Bureau of Labor Statistics, 7.0%% of female hourly workers who are 16 to 24 years old are being paid minimum wage or less. (Note that some workers in some...

1. The duration of long-distance telephone calls is normally distributed with a mean of u =18 minutes and a standard deviation of o =12 minutes. If a random sample of 64 telephone calls is used to...

The questions are in the photos below: Question 1 Not yet answered Marked out of 1.00 F Flag question If a sample of size n is drawn from a population with mean u and standard deviation 0, which of...

The manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a new component. A random sample of 64 workers indicates a mean time of 16.2 minutes....

.Answer the following questions given below. 1 Analytics of the Solow Model In the Solow economy, people consume a good that firms produce with technology Y = Af (K, L), where A is TFP (which we...

Please provide summary of the above text (More than 3000 words) **There should be no plagiarism. If you provide wrong solution then i will dislike and report you abusive and spam. Don't waste my...

A printing press priced at $315,000 is acquired by trading in a similar press and paying cash for the difference between the trade-in allowance and the price of the new press. a. Assuming that the...

In an analysis of preliminary test results from the XSORT gender selection method, 14 babies are born and it is assumed that 50% of babies are girls, so n = 14 and p = 0.5.

Typically, we assume that all cash flows occur _____. at the end of a period at the beginning of a period evenly spaced throughout a period in the middle of a period

What is meant by the duty of fair representa tion? What standard of conduct by a union is required by the duty of fair representation? Who is protected by the duty of fair repre sentation?

The following data represent the male and female population, by age, of the United States in 2008. (a) Approximate the population mean and standard deviation of age for males. (b) Approximate the...

The following data represent the age of the mother at childbirth for 1980 and 2007. (a) Approximate the population mean and standard deviation of age for mothers in 1980. (b) Approximate the...

Approximate the median of the frequency distribution in Problem 1. Weight (grams) ....Number of Babies (thousands) 0-999 ........ 30 1000-1999 ...... 97 2000-2999 ....... 935 3000-3999 .......2698...

Hand-to-Mouth (H2M) is currently cash-constrained and must make a decision about whether to delay paying one of its suppliers or take out a loan, It owes the supplier $12,000 with terms of 1.8/10 Net...

Please show steps, thank you. Consider the following bonds, each with a face value of $100: Coupon 0 Type of bond Zero-coupon Zero-coupon Zero-coupon Annual coupon Maturity 1 2 3 2 Price 96.32 P....

Financial information for American Eagle is presented in Appendix A at the end of the book. Required: 1-a. Calculate the current ratio for the past two years. 1-b. Did the current ratio improve or...