Computers and Technology, 15.11.2019 20:31 trying2passs
Consider the accompanying data on flexural strength (mpa) for concrete beams of a certain type.
11.8 7.7 6.5 6.8 9.7 6.8 7.3
7.9 9.7 8.7 8.1 8.5 6.3 7.0
7.3 7.4 5.3 9.0 8.1 11.3 6.3
7.2 7.7 7.8 11.6 10.7 7.0
a) calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion. [hint: ? xi = 219.5.] (round your answer to three decimal places.)
mpa
state which estimator you used.
x
p?
s / x
s
x tilde
(b) calculate a point estimate of the strength value that separates the weakest 50% of all such beams from the strongest 50%.
mpa
state which estimator you used.
s
x
p?
x tilde
s / x
(c) calculate a point estimate of the population standard deviation ? . [hint: ? xi2 = 1859.53.] (round your answer to three decimal places.)
mpa
interpret this point estimate.
this estimate describes the linearity of the data. this estimate describes the bias of the data. this estimate describes the spread of the data. this estimate describes the center of the data.
which estimator did you use?
x tilde
x
s
s / x
p?
(d) calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 mpa. [hint: think of an observation as a "success" if it exceeds 10.] (round your answer to three decimal places.)
(e) calculate a point estimate of the population coefficient of variation ? /? . (round your answer to four decimal places.)
state which estimator you used.
p?
x tilde
s
s / x
x
Answers: 2
Computers and Technology, 22.06.2019 11:00
Which law requires employers to provide safe working environments for their employees? a. civil rights act b. fair labor standards act c. occupational safety and health act d. wagner act
Answers: 1
Computers and Technology, 22.06.2019 22:40
In this lab, you complete a python program that calculates an employee's annual bonus. input is an employee's first name, last name, salary, and numeric performance rating. if the rating is 1, 2, or 3, the bonus rate used is .25, .15, or .1 respectively. if the rating is 4 or higher, the rate is 0. the employee bonus is calculated by multiplying the bonus rate by the annual salary.
Answers: 1
Computers and Technology, 24.06.2019 10:00
When writing a business letter, how many times can you use the same merge field in a document? once once, unless using the address block feature unlimited it will depend on the type of document you choose
Answers: 1
Consider the accompanying data on flexural strength (mpa) for concrete beams of a certain type.
Mathematics, 17.07.2019 20:30
Social Studies, 17.07.2019 20:30
English, 17.07.2019 20:30
Mathematics, 17.07.2019 20:30
English, 17.07.2019 20:30
Physics, 17.07.2019 20:30
Physics, 17.07.2019 20:30
English, 17.07.2019 20:30
Chemistry, 17.07.2019 20:30