(A)Identifying Hypotheses: Based on the given conditions, identify the Alternative hypothesis, Null Hypothesis and symbolize them. Identify whether it is a two tail or one tail test. a. Claim: The mean annual income of full-time college students is below $10,000. b. Claim: The majority of college students have at least one credit card. c. Claim: The mean IQ of adults is equal to 100. d. Claim: With manual assembly of telephone parts, the assembly times vary more than the times for automated assembly, which are known to have a mean of 27.6 sec and a standard deviation of 1.8 sec. e. Claim: Statistics professors have IQ scores that vary less than IQ scores from the adult population, which has a standard deviation of 15. (B) Weights of Sugar Packets A student of the author randomly selected 70 packets of sugar and weighed the contents of each packet, getting a mean of 3.586 g and a standard deviation of 0.074 g. Test the claim that the weights of the sugar packets have a mean equal to 3.5 g, as indicated on the label. (a) Identify the hypothesis (b) Symbolize them (c) Using the p value of 0.05 and test the claim. (d) Write your conclusion (e) Using the p value of 0.01 and test the claim. (f) Write your conclusion
(A)Identifying Hypotheses:
Based on the given conditions, identify the Alternative hypothesis, Null
Hypothesis and symbolize them. Identify whether it is a two tail or one tail
test.
a. Claim: The mean annual income of full-time college students is below
$10,000.
b. Claim: The majority of college students have at least one credit card.
c. Claim: The mean IQ of adults is equal to 100.
d. Claim: With manual assembly of telephone parts, the assembly times
vary more than the times for automated assembly, which are
known to have a mean of 27.6 sec and a standard deviation of 1.8
sec.
e. Claim: Statistics professors have IQ scores that vary less than IQ scores
from the adult population, which has a standard deviation of 15.
(B) Weights of Sugar Packets A student of the author randomly selected 70
packets of sugar and weighed the contents of each packet, getting a mean
of 3.586 g and a standard deviation of 0.074 g. Test the claim that the
weights of the sugar packets have a mean equal to 3.5 g, as indicated on
the label.
(a) Identify the hypothesis
(b) Symbolize them
(c) Using the p value of 0.05 and test the claim.
(d) Write your conclusion
(e) Using the p value of 0.01 and test the claim.
(f) Write your conclusion
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
