Mrs Smith visits THE SCHOOL - outfitters to buy school clothes for the new school year.
1 answer:
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Answer:
x=6
Step-by-step explanation:
By the Product Rule of Logarithms, the logarithm of the product of numbers is the sum of the logarithms of the numbers.
Raise both sides to the power of 10 to eliminate the logs, obtaining:
x = -2 or x = 6. Since x = -2 is extraneous, it follows that x = 6.
Answer:
95% confidence interval for the true fraction p is (0.426, 0.488)
Step-by-step explanation:
Confidence Interval can be calculated using p±ME where
- p is the sample proportion (
- ME is the margin of error from the mean
and margin of error (ME) around the mean can be found using the formula
ME= where
- z is the corresponding statistic in 95% confidence level (1.96)
- p is the sample proportion (0.457)
- N is the sample size (1000)
then ME= ≈ 0.031
Then 95% confidence interval would be 0.457±0.031 or (0.426, 0.488)