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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 20PFA
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Additional Activity waHA
Activity: Reject or Retain?
Instruction: Identify the null hypothesis, alternate hypothesis, level of significance and leveer or
confidence of the following. Afterwards, sketch the graph of each item to show the rejection, non-
rejection region, and critical value. (left-tailed, right-tailed, or two-tailed)
1. A librarian of a school claims that all their grade 8 students read an average of 10
storybooks a month with a standard deviation of 2 books. A random sample of grade 8
students read an average of 12 books a month and a standard deviation of 1 book. The
confidence statement is 95%.
Но:
H1:
level of significance (a) =
level of confidence (1 – a) =
2. A government agency is investigating a complaint from some concerned citizens who said
that there is short-weight selling of rice in a certain town. An agent manufacturer took a
random sample of 20 sacks of “50-kilo" sacks of rice from a large shipment and finds that the
mean weight is 49.7 kilogram with a standard deviation of 0.35 kilogram. The level of
significance is 0.01.
=
Ho:
Hi:
level of significance (a) =
level of confidence (1 – a) =
Transcribed Image Text:Additional Activity waHA Activity: Reject or Retain? Instruction: Identify the null hypothesis, alternate hypothesis, level of significance and leveer or confidence of the following. Afterwards, sketch the graph of each item to show the rejection, non- rejection region, and critical value. (left-tailed, right-tailed, or two-tailed) 1. A librarian of a school claims that all their grade 8 students read an average of 10 storybooks a month with a standard deviation of 2 books. A random sample of grade 8 students read an average of 12 books a month and a standard deviation of 1 book. The confidence statement is 95%. Но: H1: level of significance (a) = level of confidence (1 – a) = 2. A government agency is investigating a complaint from some concerned citizens who said that there is short-weight selling of rice in a certain town. An agent manufacturer took a random sample of 20 sacks of “50-kilo" sacks of rice from a large shipment and finds that the mean weight is 49.7 kilogram with a standard deviation of 0.35 kilogram. The level of significance is 0.01. = Ho: Hi: level of significance (a) = level of confidence (1 – a) =
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