Answer:
±12.323
Step-by-step explanation:
A study by the department of education of a certain state was trying to determine the mean SAT scores of the graduating high school seniors. The study examined the scores of a random sample of 238 graduating seniors and found the mean score to be 493 with a standard deviation of 97. Calculate the margin of error using the given formula. How could the results of the survey be made more accurate?
The formula for margin of Error =
±z × Standard deviation/√n
We are not given the confidence interval but let us assume the confidence interval = 95%
Hence:
z score for 95% confidence interval = 1.96
Standard deviation = 97
n = random number of samples = 238
Margin of Error = ± 1.96 × 97/√238
Margin of Error = ±12.323
To solve this, you have to divide 50 by 10, which is from the original ratio. You should come up with 5, so then you multiply 5 times 7 to equal the 50 votes for candidate A, which would be 35. Add 50 to 35, and your answer is 85! :D please brainly!
Each part has its own graph. The inequalities are shown on the graph.
Answer:
Step-by-step explanation:he amount of simple interest earned on an investment can be determined ... For example, for an annual interest rate of 5% compounded monthly, ... Rank these rates from greatest to least return on an investment of $20000 for a term of 2 years. ... savings account and invested the entire amount in a 10 year GIC that earned ...
Answer:
option B
option D
Step-by-step explanation:
1)
First we will remove radical sign as and then multiply the powers.
2)
The "power rule" tells us that to raise a power to a power, just multiply the exponents.
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