Which statement is true about the graphs shown?
1 answer:
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Answer:
True
Step-by-step explanation:
Confidence interval for banking service in a given confidence level can be calculated as M±ME where
- M is the mean banking service in the sample and
- ME is the Margin of Error
margin of error (ME) is calculated using the formula
ME= where
- t is the corresponding statistic in the given confidence level
- s is the standard deviation of the sample(or of the population if it is known)
- N is the sample size
t-statistic for 99% confidence level is always bigger than 95% confidence level which makes Margin of Error bigger and thus confidence interval wider.
Answer:
Step-by-step explanation:
Answer:
The price paid for the phone after tax and the mail-in rebate is $265 (an approximate value of $264.92).
Step-by-step explanation:
Given:
Retail price of the phone $199, sales tax 8% of the retail price and rebate $50.
So, for getting the price paid for phone add the retail price, sales tax and rebate.
Now, the amount of sales tax :
8% of $199
⇒
⇒
⇒.
Sales tax is $15.92.
According to question:
.
Therefore, the price paid for the phone after tax and the mail-in rebate is $265 (an approximate value of $264.92).