b. μ or p  H0: =, <, >, or ≠ H1:  =, <, >, or ≠ c. z or t

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Author:Carter
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Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Please answer B-D 

b. μ or p 

H0:

=, <, >, or ≠

H1

=, <, >, or ≠

c. z or t 

The average number of cavities that thirty-year-old Americans have had in their lifetimes is 6. Do twenty-
year-olds have fewer cavities? The data show the results of a survey of 15 twenty-year-olds who were asked
how many cavities they have had. Assume that the distribution of the population is normal.
5, 4, 3, 6, 7, 4, 5, 3, 7, 5, 6, 4, 5, 4, 3
What can be concluded at the a = 0.10 level of significance?
a. For this study, we should use t-test for a population mean
b. The null and altemative hypotheses would be:
Họ:
Select an answer
H1: [?vSelect an answer
c. The test statistic |
(please show your answer to 3 decimal places.)
d. The p-value =
e. The p-value is ? va
f. Based on this, we should Select an answer v the null hypothesis.
g. Thus, the final conclusion is that ...
(Please show your answer to 4 decimal places.)
O The data suggest the population mean is not significantly less than 6 at a = 0.10, so there is
sufficient evidence to conclude that the population mean number of cavities for twenty-year-
olds is equal to 6.
Transcribed Image Text:The average number of cavities that thirty-year-old Americans have had in their lifetimes is 6. Do twenty- year-olds have fewer cavities? The data show the results of a survey of 15 twenty-year-olds who were asked how many cavities they have had. Assume that the distribution of the population is normal. 5, 4, 3, 6, 7, 4, 5, 3, 7, 5, 6, 4, 5, 4, 3 What can be concluded at the a = 0.10 level of significance? a. For this study, we should use t-test for a population mean b. The null and altemative hypotheses would be: Họ: Select an answer H1: [?vSelect an answer c. The test statistic | (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is ? va f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... (Please show your answer to 4 decimal places.) O The data suggest the population mean is not significantly less than 6 at a = 0.10, so there is sufficient evidence to conclude that the population mean number of cavities for twenty-year- olds is equal to 6.
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