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This is a statistics question I need help with finding the lower limit and upper limit.

 

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Related textbook solutions

Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208

Related questions

A cumulative relative frequency distribution shows
a. the proportion of data items with values less than or equal to the upper limit of each class
b. the proportion of data items with values less than or equal to the lower limit of each class
c. the percentage of data items with values less than or equal to the upper limit of each class
d. the percentage of data items with values less than or equal to the lower limit of each class

What is the difference between a class boundary and a class limit (Select all that apply.)

a.) Class boundaries are possible data values.

b.) Class limits are values halfway between the upper class boundary of one class and the lower class boundary of the next.

c.) Class limits specify the span of data values that fall within a class.

d.) Class boundaries are values halfway between the upper class limit of one class and the lower class limit of the next.

e.) Class boundaries are not possible data values.

f.) Class limits are possible data values.

g.) Class limits are not possible data values.

h.) Class boundaries specify the span of data values that fall within a class.

The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 91 pounds. A random sample of 80 newly manufactured cables has a mean breaking strength of 1750 pounds. Based on this sample, find a 95% confidence interval for the true mean breaking strength of all cables produced by this manufacturer. Then complete the table below.

Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. 

(If necessary, consult a list of formulas.)

I need both the lower limit, and upper limit of the 90% confidence interval.

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