So the fisrt thing we need to calculate is that 9 times out of 10 is 90% which will be the confidence interval.
<span>Margin of error is 6% = .06 </span>
<span>Confidence interval is 80 +/- .06 = .74 to .86. or 74% to 86$ </span>
<span>In 9 times out of 10 the confidence interval for similar samples of seniors will contain the </span><span>true mean of the population of senior scores. </span>
Answer:
25+10%= 27.5 Hope this helps.
Step-by-step explanation:
Answer: 3
Step-by-step explanation:
B is your answer.
Because 7 times 8 is 56 and 7 times 3 is 21.