42 * 0.18 = $7.56
She gave the barbar $7.56 in tip
Answer:
Statistic
Step-by-step explanation:
Since, a characteristic of a sample is called statistic. It is used to estimate the value of a population parameter and can be computed from the sample.
Here, the sample is 104 children,
For which the average number of hours of sleep per night was 9.46 hours,
∵ 9.46 is the number that can be computed from the sample of 97 children.
Hence, the number 9.46 is a Statistic
Answer:
X= 9
Step-by-step explanation:
Look up answer on google
Answer:
like real numbers, the arithmetic operations, such as addition, subtraction, multiplication and division are applicable to the rational numbers
