A certain polymer is used for evacuation systems for aircraft It is important that the polymer be resistant to the aging process Twenty specimens of the polymer were used in an experiment Ten were assigned randomly to be exposed to the accelerated batch aging process that involved exposure to high temperatures for 10 days Measurements of tensile strength of the specimens were made and the following data were recorded on tensile strength in psi (a) Do a dot plot of the data (b) From your plot, does it appear as if the aging process has had an effect on the tensile strength of this polymer Explain (c) Calculate the sample mean tensile strength of the two samples (d) Calculate the median for both Discuss the similarity or lack of similarity between the mean and median of each group No aging 227 222 225 218 217 229 228 219 214 215 211 218 216 221 209 Aging 204 201 205 203 218

Question: A certain polymer is used for evacuation systems for aircraft. It is important that the polymer be resistant to the aging process. Twenty specimens of

A certain polymer is used for evacuation systems for aircraft. It is important that the polymer be resistant to the aging process. Twenty specimens of the polymer were used in an experiment. Ten were assigned randomly to be exposed to the accelerated batch aging process that involved exposure to high temperatures for 10 days. Measurements of tensile strength of the specimens were made and the following data were recorded on tensile strength in psi.

No aging: 227 222 225 218 217 229 228 219 214 215 211 218 216 221 209 Aging: 204 201 205 203 218

(a) Do a dot plot of the data?

(b) From your plot, does it appear as if the aging process has had an effect on the tensile strength of this polymer? Explain.

(d) Calculate the median for both. Discuss the similarity or lack of similarity between the mean and median of each group.

No aging: 227 222 225 218 217 229 228 219 214 215 211 218 216 221 209 Aging: 204 201 205 203 218

Step by Step Solution

★★★★★

3.44 Rating (170 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a A dot plot is shown below 00 210 ooxx 215 220 d MedianAging 21000 and Med... 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)

18-M-S-D-A (3).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Explain why it is important that the surgeons be assigned at random to the two music conditions.

The following data were collected in an experiment to study the relationship between extrusion pressure (in KPa) and wear (in mg). The least-squares quadratic model is y = 32.445714 + 0.43154286x...

In sand casting, it is important that the cope mold half be held down with sufficient force to keep i from floating when the molten metal is poured in. F the casting shown in the figure below,...

Need help in these problem For Exercise 1.6 on page 13, compute the sample standard deviation in tensile strength for the samples separately for the two temperatures. Does it appear as if an increase...

solve the following A certain polymer is used for evacuation systems for aircraft. It is important that the polymer be resistant to the aging process. Twenty specimens of the polymer were used in an...

solve the question Consider the data in Exercise 1.5 on page 13. Compute the sample variance and the sample standard deviation for both control and treatment groups. Reference Exercise 1.5: Twenty...

1.3 A certain polymer is used for evacuation systems for aircraft. It is important that the polymer be resistant to the aging process. Twenty specimens of the polymer were used in an experiment. Ten...

solve the question A certain polymer is used for evacuation systems for aircraft. It is important that the polymer be resistant to the aging process. Twenty specimens of the polymer were used in an...

solve these Exercise 1.3 on page 13 showed tensile strength data for two samples, one in which specimens were exposed to an aging process and one in which there was no aging of the specimens. (a)...

Refer to the facts in Exercise 4-41. Mel suddenly finds an opportunity to sell boxed dinners. The new opportunity would require the use of the 30 percent unused capacity. The contribution margin from...

You have moved to a small village in a developing country. The people in this village rely on the nearby forest for the wood they use for cooking. The forest officially is a park and should not be...

6 Suppose Li & Tse Jewellers has a target profit of $200000 per year, earns a unit contribution of $500, and incurs fixed costs of $50000. Calculate the target profit output for the firm. [2]

The price/earnings ratios of four companies from different industries are: Company ........ P/E Ratio Amazon.com ...... 2,763 Microsoft ........ 16 Toyota Motors ...... 13 Whole Foods Market .... 41...

Bobaflex Corporation has ending inventory of $527,156 and cost of goods sold for the year just ended was $8,543,132. What is the inventory turnover? The days' sales in inventory? How long on average...

The following accounts appear in the ledger of Sheldon Company on January 31, the end of this fiscal year. Cash ......................... $ 16,400 Accounts Receivable .................... 15,100...

Washington County Airport (WCA) faces three potential contingency situations, described below. Their fiscal year ends December 31, 2015. Required: Determine the appropriate means of reporting each...

The information below pertains to the retiree health care plan of Thompson Technologies: Thompson began funding the plan in 2018 with a contribution of $127,000 to the benefit fund at the end of the...

Suppose that functions and g satisfy Eq. (1) and have the same initial valuesthat is, (0) = g(0) and '(0) = g(0). Prove that (x) = g(x) for all x. Apply Exercise 70(a) to g. Eq.(1) Data From...

According to The Economist, the current office vacancy rate in San Jose, California, is 21%.An economist knows that this British publication likes to disparage America and suspects that The Economist...

At Armco's steel plant in Middletown, Ohio, statistical quality-control methods have been used very successfully in controlling slab width on continuous casting units. The company claims that a large...

For the data of Exercise 12.15 on page 472, use the techniques of 1 2 3 2 3 1. forward selection with a 0.05 level of significance to choose a linear regression model; 2. backward elimination with a...

For the punter data in Case Study 12.2, an additional response, punting distance, was also recorded. The average distance values for each of the 13 punters are given. 1. Using the distance data...

The following is a set of data for y, the amount of money (in thousands of dollars) contributed to the alumni association at Virginia Tech by the Class of 2005, and x, the number of years following...

Refer to Figure 15.1, which lists the prices of various IBM options. Use the data in the figure to calculate the payoff and the profit/loss for investments in each of the following Jan-12 expiration...