45 points! Yay An investment may earn interest using a simple interest rate or a compound interest rate. This expression can be
used to find the value of an investment that is earning simple interest: P(1+rt) This expression can be used to find the value of an investment that is earning compound interest: P(1+r)t Use the drop-down menus to complete the statements about simple and compound interest. For an investment earning(simple interest,compound interest) , the interest is applied each year to the principal and to any interest that already accrued. For an investment earning(simple interest, compojnd interest) , the interest is applied each year only to the principal. Please help I'm literally the dumbest person i know •,-,•
2 answers:
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Answer:
The sample size is
Step-by-step explanation:
From the question we are told that
The sample proportion is
The margin of error is
Given that the confidence level is 95% the level of significance is mathematically represented as
Next we obtain the critical value of from the normal distribution table , the values is
The reason we are obtaining critical value of instead of
is because
represents the area under the normal curve where the confidence level interval (
) did not cover which include both the left and right tail while
is just the area of one tail which what we required to calculate the margin of error
Generally the margin of error is mathematically represented as
substituting values
=>