The perimeter of the regular polygon shown is 14 ft.
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Answer: aA 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years = (0.163,0.189)
Step-by-step explanation:
Let p = population proportion of adults in the U.S. who have donated blood in the past two years.
Given: A Gallup survey of 2322 adults (at least 18 years old) in the U.S. found that 408 of them have donated blood in the past two years.
Sample size: n= 2322
Sample proportion
Critical z-value for 90% confidence level : z*=1.645
The confidence interval for population proportion:
A 90% confidence interval for the population proportion of adults in the U.S. who have donated blood in the past two years:
Hence,
Answer:
58 students
Step-by-step explanation:
Given
Required
Students that take only 1 subjects
The attached image illustrates the question.
For French only (x), we have:
Collect like terms
For Geometry only (y), we have:
Collect like terms
For History only (z), we have:
Collect like terms
Students with one subject is then calculated as:
