Practice: Write an algebraic equation to model each situation. Then solve the equation and answer the question.
1 answer:
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Answer: Minimum sample size = 110
Step-by-step explanation:
Formula to find minimum sample size :
, where z = critical z-value for confidence level, s= sample standard deviation , E = margin of error
Given: E= 4 , s= 18
Critical z-value for 98% confidence = 2.327
So,
Minimum sample size = 110
Answer:
$221.44
Step-by-step explanation:
As the bank charges a <em>monthly </em>interest, we cannot calculate a simple or compound interest over the 8 month period. As the balance will decrease each month as Kylie makes payments, the interest applied each month will also decrease. Therefore, we have to use:
<u>Monthly Payment Formula</u>
where:
- PMT = monthly payment
- P = loan amount
- i = interest rate per month (in decimal form)
- n = term of the loan (in months)
Given:
- P = $1,700
- i = 0.925% = 0.00925
- n = 8 months
Substituting the given values into the formula and solving:
Therefore, the monthly payment to the nearest dollar will be $221.44
Answer:
A correctly shows the location of all the given values.
Step-by-step explanation:
The main difference can be found with the value -2 . This value would be less than -2 so the dot should be close to the middle line between -2 and -4.
Hope this helps~!