Help me please Find the value of x.
1 answer:
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I can burly read that but the fraction should be right
Answer:
The upper limit for the 95% confidence interval for the population proportion of defective gaming systems is 0.022
Step-by-step explanation:
Upper Limit for 95% Confidence Interval can be calculated using p+ME where
- p is the sample proportion of defective gaming systems (
)
- 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 statistic of 95% confidence level (1.96)
- p is the sample proportion (
- N is the sample size (1200)
Using the numbers we get:
ME= ≈ 0.007
Then upper limit for the population proportion is 0.015+0.007 =0.022
The total number of coins in Lucy's coin collection is equal to 80 coins.
- Let the total number of coins be C.
<u>Given the following data:</u>
- Percentage of quarters = 15%
- Total number of quarters = 12 quarters
To the total number of coins in Lucy's coin collection:
Since the percentage of the quarters in Lucy's coin collection is equal to fifteen percent (15%) of the total number of coins. Thus, we would multiply the total number of coins by 15% and equate it to 12 quarters.
<u>Total number</u><u> of </u><u>coins</u><u>:</u>
C = 80 coins.
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