Question

In: Math

Data on pull-off force (pounds) for connectors used in an automobile engine application are as follows:...

Data on pull-off force (pounds) for connectors used in an automobile engine application are as follows: 79.7 75.1 78.2 74.1 73.9 75.0 77.6 77.3 73.8 74.6 75.5 74.0 74.7 75.9 72.5 73.8 74.2 78.1 75.4 76.3 75.3 76.2 74.9 78.0 75.1 76.8 If necessary, round all intermediate calculations to four decimal places (e.g. 12.3456). (a) Calculate a point estimate of the mean pull-off force of all connectors in the population (Round the answer to four decimal places (e.g. 90.2353).) (b) Calculate a point estimate of the pull-off force value that separates the weakest 50% of the connectors in the population from the strongest 50% (Express the answer to two decimal place (e.g. 90.15).) (c) Calculate the point estimate of the population variance (Round the answer to three decimal places (e.g. 3.567).) (d) Calculate the point estimate of the population standard deviation (Round the answer to two decimal places (e.g. 1.23).) (e) Calculate the standard error of the point estimate found in part (a) (Round the answer to two decimal places (e.g. 1.23).) (f) Calculate a point estimate of the proportion of all connectors in the population whose pull-off force is less than 73 pounds (Round the answer to three decimal places (e.g. 0.123).)

Solutions

Expert Solution

Solution:

(a) Calculate a point estimate of the mean pull-off force of all connectors in the population

Answer: The point estimate of the mean pull-off force of all connectors in the population is:

(b) Calculate a point estimate of the pull-off force value that separates the weakest 50% of the connectors in the population from the strongest 50%

Answer: The point estimate of the pull-off force value that separates the weakest 50% of the connectors in the population from the strongest 50% is:

(c) Calculate the point estimate of the population variance

Answer: The point estimate of the population variance is:

(d) Calculate the point estimate of the population standard deviation

Answer: The point estimate of the population standard deviation is:

(f) Calculate a point estimate of the proportion of all connectors in the population whose pull-off force is less than 73 pounds

Answer: The point estimate of the proportion of all connectors in the population whose pull-off force is less than 73 pounds is:

milcah answered 2 months ago
Next > < Previous

Related Solutions

Data on pull-off force (pounds) for connectors used in an automobile engine application are as follows
Data on pull-off force (pounds) for connectors used in an automobile engine application are as follows 79.3  75.1  78.2  74.1  73.9  75.0  77.6  77.3  73.8  74.6  75.5  74.0  74.775.97  2.9   73.8  74.2  78.1  75.4  76.3  75.3  76.2  74.9  78.0  75.1  76.8a. Calculate a point estimate of the mean pull-off force of all connectors in the population. State which estimator you used and why.b. Calculate a point estimate of the pull-off force value that separates the weakest 50% of the connectors...
The mean oull-off force of an adhesive used in manufacturing a connector for an automotive engine...
The mean oull-off force of an adhesive used in manufacturing a connector for an automotive engine application should be at least 75 pounds. This adhesive will be used unless there is strong evidence that the pull-off force does not meet this requirement. A test of an appropiate device is to be conducted with a sample size n = 30 and a = 0.01. Assume the standard deviation is known. a) If the true standard deviation s = 1, what is...
How strong a force (in pounds) is needed to pull apart pieces of wood 4 inches...
How strong a force (in pounds) is needed to pull apart pieces of wood 4 inches long and 1.5 inches square? The following are data from students performing a comparable laboratory exercise. Suppose that the strength of pieces of wood like these follow a Normal distribution with standard deviation 3000 pounds. 33,200     31,880     32,580     26,470     33,270     32,310     32,990     32,000     30,470     32,750     23,000     30,950     32,720     33,640     32,290     24,070     30,200     31,350     28,740     31,890     (a) We are interested in statistical significant evidence at...
A tension force of 165 N inclined at 15.0° above the horizontal is used to pull...
A tension force of 165 N inclined at 15.0° above the horizontal is used to pull a 33.0 kg shipping crate a distance of 3.60 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface. HINT (a) the work done by the tension force (in J) J (b) the coefficient of kinetic friction between the crate...
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s...
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.70 gallons, what is the boiling point of the solution? Make the following assumptions in your calculation: at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is non-ionizing and non-volatile, and that the pressure remains...
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s...
A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 5.60 gallons, what is the boiling point of the solution? Make the following assumptions in your calculation: at normal filling conditions, the densities of engine coolant and water are 1.11 g/mL and 0.998 g/mL respectively. Assume that the engine coolant is pure ethylene glycol (HOCH2CH2OH), which is non-ionizing and non-volatile, and that the pressure remains...
During engine tests, you measure the thrust (in pounds)10 times and obtain this data: 4061 3637...
During engine tests, you measure the thrust (in pounds)10 times and obtain this data: 4061 3637 3215 4581 4373 4138 3701 3244 4520 4298 Can the normal distribution be used with this data? Use the Central Limit Theorem (CLT) to explain why we can or cannot assume that these values are from a normal distribution. Do you need to make any assumptions in order to apply the CLT? Calculate the mean and variance for this sample. (Assume that you can...
Vodafone is based in the United Kingdom. Selected data from Vodafone’s 2012 annual report follows (pounds...
Vodafone is based in the United Kingdom. Selected data from Vodafone’s 2012 annual report follows (pounds in millions). 2012 2011 2010 Revenues $46,417 $45,884 $44,472 Gross profit % 32.04% 32.84% 33.80% Operating profit 11,187 5,596 9,480 Net cash flow less capital expenditures 8,459 9,173 9,145 Net earnings 7,003 7,870 8,618 In its 2012 annual reports, Vodafone states, " Our leading performance is based on 3 core strengths. The successful implementation of our strategy to generate liquidity or free cash flow...
Assume that the employment data for Lalaland are as follows: • Population aged 16 and above 243,190 • Army 1,705 • Labour force 161,600
Assume that the employment data for Lalaland are as follows:• Population aged 16 and above 243,190• Army 1,705• Labour force 161,600• Unemployed 7,757a) Calculate:i. the number of people (16 years old and over) not in the labour force.ii. the number of people employed.iii. the unemployment rates.iv. the unemployment rate if army were counted in the labour force.b) Categorize each of the individuals below as either frictionally, structurally, or cyclically unemployed.i. Kamal is an auto worker from BMW who has been...
1) SSL is used to A) Encrypt specific elements of data for application-specific purposes. B) Encrypt...
1) SSL is used to A) Encrypt specific elements of data for application-specific purposes. B) Encrypt files located on a Web server. C) Encrypt data as it travels over a network. D) Encrypt digital certificates used to authenticate a Web site. E) Encrypt passwords for storage in a database. 2) What kind of attacks does SSL prevent? Select the best answer. Explain. A) SQL Injection. B) Sniffing. C) Variable Manipulation. D) Phishing Attacks. 3) Which of the following are not...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT