1/2 + 3/8 - 1/4 = ____.
A. 2/16
B. 1/2
C. 4/5
D. 5/8
Answer: D
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Building products can be produced from agricultural waste products made from ____.
A. cork B. rice hulls C. wool D. sisal
The earliest ways of generating light were from _______________ and _______________
Fill in the blank(s) with the appropriate word(s).
In a simple random sample of 70 automobiles registered in a certain state, 28 of them were found to have emission levels that exceed a state standard.
a. What proportion of the automobiles in the sample had emission levels that exceed the standard? b. Find a 95% confidence interval for the proportion of automobiles in the state whose emission levels exceed the standard. c. Find a 98% confidence interval for the proportion of automobiles whose emission levels exceed the standard. d. How many automobiles must be sampled to specify the proportion that exceed the standard to within ±0.10 with 95% confidence? e. How many automobiles must be sampled to specify the proportion that exceed the standard to within ±0.10 with 98% confidence? f. Someone claims that less than half of the automobiles in the state exceed the standard. With what level of confidence can this statement be made?
Solve this proportion.
Fill in the blank(s) with the appropriate word(s).