Mathematics, 01.07.2020 15:01 jamesmcfarland
A research report claims that 20% of all individuals use Firefox to browse the web. A software company is trying to determine if the proportion of their users who use Firefox is significantly different from 0.2. In a sample of 200 of their users, 32 users stated that they used Firefox. Using this data, conduct the appropriate hypothesis test using a 0.05 level of significance.
a) What are the appropriate hypotheses?
H0: p = 0.2 versus Ha: p < 0.2
H0: p = 0.2 versus Ha: p > 0.2
H0: p = 0.2 versus Ha: p ? 0.2
H0: ? = 0.2 versus Ha: ? > 0.2
b) What is the test statistic? Give your answer to four decimal places.
c) What is the P-value for the test? Give your answer to four decimal places.
d) What is the appropriate conclusion?
1. Conclude that the Firefox proportion is not 0.2 because the P-value is smaller than 0.05.
2. Conclude that the Firefox proportion is not 0.2 because the P-value is larger than 0.05.
3. Fail to reject the claim that the Firefox proportion is 0.2 because the P-value is larger than 0.05.
4. Fail to reject the claim that the Firefox proportion is 0.2 because the P-value is smaller than 0.05.
Answers: 1
Mathematics, 21.06.2019 14:00, tasha7121
9. (y^-5)^10y^10 a. y^-60 b. y^60 c. y^-150 d. y^150 find the simplified form of each expression. 10. (4/7^5)^2 a.8/14^10 b.16/49^25 c.16/49y^10 d.8/14y^25 11. determine if the number 3.43 times 10^-6 is written in scientific notation. if not, explain. a. yes; the number is written scientific notation. b. no; the first factor is not a number between 1 and 10. c. no; it is not written as a number times a power of 10
Answers: 3
A research report claims that 20% of all individuals use Firefox to browse the web. A software compa...
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