Answer: 20 pieces, 72 inches of ribbon
Step-by-step explanation: 6/1.5=4 4x5=20 6x12= 72 inches
Step-by-step explanation:
Mean =sum of values /number of values
total sum ↪️ 6+4+9+6+7+10+7
number of values is 7
= 49/7
<h2> =
7 is themean</h2>
Answer:
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Step-by-step explanation:
Step-by-step explanation:
sometimes ....................
To find the margin of error, multiply the z-score by the standard deviation, then divide by the square root of the sample size.The z*-score for a 90% confidence level is 1.645.The margin of error is 0.20.The confidence interval is 48.3 to 48.7.48.8 is not within the confidence interval.
