My work is in bold below.
Question:
The following two hypotheses are tested:
Ho: The proportion of UF students who have seen a dentist this year is 60%
Ha: The proportion of UF students who have seen a dentist this year is less than 60%
A random sample of 400 UF students is taken and 220 have seen a dentist this year. The test statistic for this hypothesis test is
My work: Finding z-score
p-hat value: 220/400= 0.55
z=.55-.60/square root of .60(1-.60)/220
When I worked out the problem, I got -1.52 which is not listed as a potential answer below.
Question:
The following two hypotheses are tested:
Ho: The proportion of UF students who have seen a dentist this year is 60%
Ha: The proportion of UF students who have seen a dentist this year is less than 60%
A random sample of 400 UF students is taken and 220 have seen a dentist this year. The test statistic for this hypothesis test is
A. | 3.06 | |
B. | 2.04 | |
C. | -3.06 | |
D. | -2.04 | |
E. | -1.02 | |
F. | 1.02 |
My work: Finding z-score
p-hat value: 220/400= 0.55
z=.55-.60/square root of .60(1-.60)/220
When I worked out the problem, I got -1.52 which is not listed as a potential answer below.
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